CA2477819C

CA2477819C - Reciprocating drive apparatus for an injecting conduit

Info

Publication number: CA2477819C
Application number: CA2477819A
Authority: CA
Inventors: Walter Czuroski; Samuel David Dumont; Gregory Allan Fuller; Timothy John Smeraka
Original assignee: E-CAN OILFIELD SERVICES (2005) Ltd
Current assignee: E-CAN OILFIELD SERVICES (2005) Ltd
Priority date: 2004-08-13
Filing date: 2004-08-13
Publication date: 2010-04-13
Anticipated expiration: 2024-08-13
Also published as: CA2477819A1

Abstract

An apparatus for reciprocating an injecting conduit within a storage tank, comprised of a drive mechanism and an apparatus connector. Reciprocation of the injecting conduit facilitates or enhances the cleaning of the storage tank or the removal of solid materials therefrom. The drive mechanism engages the injecting conduit to reciprocate it and comprises a first roller assembly disposed in a roller driving plane and an opposing second roller assembly disposed in the roller driving plane, wherein at least one of the first and second roller assemblies is adapted to be driven by a motor and wherein the first and second roller assemblies are adapted to engage the injecting conduit therebetween to reciprocate the injecting conduit in the roller driving plane. The apparatus connector connects the apparatus with the storage tank such that the storage tank outlet is aligned with the roller driving plane.

Description

RECIPROCATING DRIVE APPARATUS FOR AN INJECTING CONDUIT
FIELD OF INVENTION
The present invention relates to an apparatus for reciprocating an injecting conduit within a storage tank. Although reciprocation of the injecting conduit within the storage tank may be useful for a variety of reasons, reciprocation of the injecting conduit has been found to particularly facilitate or enhance the cleaning of the storage tank or the removal of solids and other waste or heavy materials therefrom.
BACKGROUND OF INVENTION
In the oil and gas industry, and particularly in the heavy oil industry, storage tanks are typically provided at the well site to permit at least some amount of separation of the fluids produced from the well. In particular, the heavy oil and water contained in the produced fluids are preferably permitted to separate such that each may be subsequently transported or conveyed from the well site in an appropriate manner. In addition, sediment from the heavy oil tends to settle or collect at the bottom of the storage tank. The sediment typically includes sand, sludge, scale and other solid, waste or heavier materials.
As the sediment collects at the bottom of the storage tank, the capacity of the storage tank for fluids is correspondingly reduced. Thus, the sediment is preferably removed on a regular basis such that further produced fluids may be received in the storage tank. In addition, the sediment is preferably removed without significantly or substantially interrupting the continued operation or use of the storage tank.
Conventionally, sand may be removed from such storage tanks by creating a slurry, or otherwise liquefying the sand, at the bottom of the tank and then removing the slurry from the tank by suctioning or vacuuming the slurry through a valve or other outlet provided at or adjacent the bottom of the tank. More particularly, an injecting conduit is typically used for injecting water into the sand or sediment in the storage tank to create the slurry. The injecting conduit typically includes a jetted nozzle, which may be referred to as a stinger, at an end of an elongate rod referred to as a stinger rod. The jetted nozzle or stinger is inserted into the storage tank through the valve adjacent the bottom of the storage tank. Water is pumped through the stinger rod and injected out of the stinger into the storage tank under pressure in order to create the slurry. The slurry is then readily removed from the tank by pumping or suctioning the slurry out of the tank to a transport vehicle.
It has been found that both the creation and removal of the slurry may be enhanced or facilitated by moving the stinger during the process. Thus, the stinger is preferably moved within the storage tank during the slurry creation and removal process.
However, none of the known or conventional injection systems or apparatuses permit or provide for the efficient or continuous movement of the stinger.
For instance, the stinger rod and attached stinger are conventionally reciprocated, or moved in a back and forth manner, manually within the storage tank.
Specifically, reciprocation of the stinger is conventionally achieved through the manual reciprocation of the stinger rod by two or more workers alternately pushing and pulling the stinger rod which is mounted or positioned upon a cart or wheeled structure.
Depending upon the length and weight of the stinger rod, the nature of the terrain over which the cart which must be moved and the nature and consistency of the sediment in the storage tank, manual reciprocation of the stinger rod tends to be a physically demanding and labor intensive task. As a result, the speed at which the stinger rod may be moved tends to be relatively slow, which minimizes or decreases the advantages associated with the reciprocation. Further, the manpower required the reciprocate the stinger rod tends to decrease the cost efficiency of the process and increase the likelihood of physical injury to the workers.
Finally, where the sediment contains a relatively large proportion of scale, manual reciprocation of the stinger rod is often not possible or is significantly impeded.
In addition, various automated systems or apparatuses have been provided for placing a stinger rod in a storage tank and/or manipulating the stinger in the storage tank.
However, none of these automated systems or apparatuses have been found to be fully satisfactory.

Canadian Application No. 2,315,670 published February 11, 2002 by Wagg et al.
is directed at a tank cleaning system which provides a primary tube for insertion into the storage tank which conducts liquefied sediments from the tank to a transport vehicle. A
smaller diameter pipe is located inside the primary tube and supplies water to a jet at the intake end of the primary tube.
S The jetting action liquefies the sediment in the tank and allows it to flow from the storage tank through the primary tube to the transport vehicle.
However, the primary tube is not repeatedly or continuously reciprocated during the process. Rather, the primary tube is moved in a first direction gradually across the entire width of the storage tank at a selected speed such that the transport vehicle is close to being filled with sediment by the time the primary tube reaches the opposite side of the tank.
At that time, the primary tube is quickly withdrawn from the tank in order to complete the cleaning operation.
Thus, the primary tube is moved across the tank once during the entire cleaning operation.
The tank cleaning system includes a mechanical drive system for moving the primary tube into and out of the storage tank. However, given the need to move the primary tube across the tank only once during the entire cleaning operation, as described above, the mechanical drive system only permits or provides for the relatively slow movement of the primary tube. In particular, the primary tube is gripped or fixedly held between a pair of gripping shoes, which are moved by a drive arm to move the primary tube held therebetween. However, the length of travel or movement of the gripping shoes is limited to the distance between a forward guide tube and a rear guide tube. When the gripping shoes abut against either the forward or rear guide tubes, further movement in the same direction is not permitted. To move further in the same direction, the gripping shoes must be released and re-affixed at a different position along the length of the primary tube. Accordingly, to move across the entire width of the tank, the gripping shoes must be repeatedly affixed, released and re-affixed.
Canadian Patent Application No. 2,366,079 published May 20, 2002 by Knowlton is also directed at an apparatus for cleaning an oil storage tank including a rigid injector wand which is inserted in the tank. Although movement of the injector wand within the tank is discussed, Knowlton does not specifically discuss or describe the apparatus which would be used to move the injector wand in the described manner.

United States of America Patent No. 4,945,933 issued August 7, 1990 to Krajicek et al. and United States of America Patent No. 5,091,016 issued February 25, 1992 to Krajicek et al.
describe a "crude oil circulator" which is inserted in a storage tank for cleaning its interior. The crude oil circulator includes a number of nozzled outlet jets which rotate upon the passage of fluid therethrough for cleaning the tank.
The crude oil circulator is connected to one end of a plurality of joints of pipes which are fastened together to extend the necessary distance across the diameter of the tank. The crude oil circulator is specifically described for use in cleaning relatively large tanks having a diameter of 100 - 300 feet. Therefore, a specialized apparatus is required for connecting and disconnecting the joints of pipe as the crude oil circulator connected thereto is moved across the tank.
In particular, a "tripping rack" is provided for connecting and disconnecting the plurality of pipe joints, and thus inserting the crude oil circulator into the tank to a desired position and subsequently withdrawing the crude oil circulator following the cleaning operation. The tripping rack involves a relatively complex and large structure wherein the pipe joints are moved into and out of the tank by a tripping sled mounted on a tripping rack frame and operatively interconnected with an endless chain for movement backward and forward along the tripping rack frame in response to movement of the endless chain.
The tripping rack is not provided for moving the crude oil circulator during its operation. Rather, the crude oil circulator remains in a set or stationary position during the rotation of the nozzled outlet jets. Further, given the complexity and manner of operation of the tripping rack, any movement of the joints of pipe caused thereby would tend to be relatively slow, requiring the repeated connection and disconnection of the tripping sled with successive joints of pipe such that the pipe joints may be moved in the desired direction.
United States of America Patent No. 6,142,160 issued November 7, 2000 to Winslow et al. describes an apparatus for cleaning the interior of a storage tank using concentric pipes inserted therein. In particular, an inner pipe is connected to a source of a pressurized flushing fluid, while the space between the inner pipe and an outer pipe permits the removal of hydrocarbon sludge from the tank to a sludge disposal system. The concentric pipes may be manipulated during the cleaning operation by the operator. However, Winslow et. al. does not specifically describe the mechanism by which the manipulation of the concentric pipes would be effected. It simply states that suitable gripping and moving means would be provided.
As a result, there remains a need in the industry for an apparatus for reciprocating an injecting conduit within a storage tank. Further, there remains a need for an apparatus for reciprocating an injecting conduit within a storage tank, wherein the apparatus is adapted to reciprocate the injecting conduit in a manner which facilitates or enhances the cleaning of the storage tank or the removal of sediment therefrom, including sand, sludge, scale and other solid, waste or heavier materials.
There is also a need for the apparatus to be relatively lightweight and easy to operate, as compared with known methods and apparatuses, in order to reduce the manual labor required to operate the apparatus, decrease the likelihood of injury to operators and increase its cost effectiveness. Finally, there is a need for the apparatus to be capable of reciprocating the injecting conduit at a relatively fast rate, as compared with known methods and apparatuses, to enhance the effectiveness of the cleaning operation.
SUMMARY OF INVENTION
The present invention relates to an apparatus for reciprocating an injecting conduit within a storage tank through a storage tank outlet. In the preferred embodiment, the apparatus is adapted to reciprocate the injecting conduit in a manner which facilitates or enhances the performance of a cleaning operation in the storage tank, wherein the cleaning operation includes injecting a fluid, preferably under pressure, into the storage tank through the injecting conduit to create a slurry of sediment or sedimentary materials within the storage tank and removing the slurry, wherein the sediment or sedimentary materials include sand, sludge, scale and other solid, waste or heavier materials, including those which may be referred to in the industry as "slop."

The apparatus is preferably relatively lightweight and relatively easy to handle and operate as compared with known systems or apparatuses. Further, the apparatus is preferably adapted or configured to provide for the reciprocation of the injecting conduit at a relatively fast rate of reciprocation, as compared with known methods and apparatuses. In the preferred embodiment, the apparatus is capable of reciprocating the injecting conduit at a speed or rate of up to twenty times the speed or rate capable of being achieved on manual reciprocation of the inj ecting conduit.
The apparatus is adapted to reciprocate the injecting conduit within the storage tank, or to move the injecting conduit alternately backwards and forwards or in opposed directions. The injecting conduit may be comprised of any pipe, conduit or tubular structure defining at least one fluid passage therethrough for conducting an injection fluid into the storage tank. In the preferred embodiment, the injecting conduit is comprised of an elongate tubular rod, which may be referred to as a stinger rod, having a nozzle at one end thereof, which may be referred to as a stinger. The stinger rod is inserted or extended through the storage tank outlet such that the stinger is positioned within the storage tank. Thus, reciprocation of the stinger rod by the apparatus causes the stinger to correspondingly move within the storage tank.
Preferably, the injection fluid is conducted under pressure through the injecting conduit and is injected or forced into the storage tank to create a slurry within the tank. Thus, the slurry is typically comprised of the injection fluid and any sediment or sedimentary materials, including solids, waste or other heavier materials, which have settled within the storage tank. The slurry may be removed from the storage tank in any manner, preferably through the storage tank outlet. Preferably, the slurry is removed from the storage tank through a valve structure or valve mechanism provided at, adjacent or proximate to the storage tank outlet.
However, alternately, the injecting conduit may define at least one further fluid passage therethrough for conducting the slurry out of the storage tank. In other words, the injecting conduit may be comprised of at least one first fluid passage for conducting the injection fluid into the storage tank and at least one second fluid passage for conducting the slurry out of the storage tank. For instance, the injecting conduit may be comprised of at least two concentric tubes, wherein the first fluid passage is defined by the interior surface or bore of an inner tube and the second fluid passage is defined between the outer surface of the inner tube and the inner surface or bore of an outer tube.
The apparatus may be used for reciprocating the injecting conduit in any desired type or configuration of storage tank, vessel or structure having a storage tank outlet. Preferably, the storage tank is of a type used in the oil and gas industry for storing and/or separating hydrocarbons. In the preferred embodiment, the storage tank is of a type used for storing and/or separating heavy oil. In particular, the heavy oil typically separates into hydrocarbons and water.
Further, sediment tends to settle or collect at or towards the bottom or lowermost section of the storage tank. The sediment may include sand, sludge, scale and other solid, waste or heavier materials, including "slop." Thus, the injecting of the injection fluid from the injecting conduit into the storage tank creates an amount of turbulence within the storage tank which disturbs the sediment, causing it to mix with the injection fluid to create the slurry.
As indicated, the injecting conduit extends or passes through the storage tank outlet into the interior of the storage tank. The storage tank outlet may be comprised of any structure or mechanism permitting access to the interior of the storage tank or communication between the interior and exterior of the storage tank. In the preferred embodiment, the storage tank outlet is comprised of a valve structure or mechanism permitting the selective opening and closing of the storage tank outlet as desired or required for use of the apparatus.
The storage tank outlet may be positioned at any location about the perimeter or circumference of the storage tank. Preferably, the storage tank outlet is positioned at a location which facilitates the connection of the apparatus with the storage tank outlet and the use of the apparatus in the manner described herein. In addition, the storage tank outlet may be positioned at any height from the bottom of the storage tank which permits the functioning of the injecting conduit and the apparatus in the manner described herein to create the slurry in the storage tank.
Thus, the storage tank outlet is preferably at, adjacent or proximate to the bottom or lowermost portion or section of the storage tank, depending upon the depth or quantity of the sediment deposited within the storage tank. In other words, the height of the storage tank outlet is preferably compatible with, and suitable for, extending the injecting conduit within the storage tank at, adjacent or proximate to the layer of sediment deposited therein and desired to be removed from the storage tank.
The apparatus is comprised of a drive mechanism adapted to engage the injecting S conduit in order to reciprocate the injecting conduit and an apparatus connector adapted to connect the apparatus with the storage tank. Preferably, the drive mechanism reciprocates the injecting conduit in a driving plane and the apparatus connector connects the apparatus with the storage tank such that the storage tank outlet is aligned with the driving plane. Although the drive mechanism may be comprised of any mechanism, device or structure capable of, and compatible with, engaging the injecting conduit to reciprocate the injecting conduit in the driving plane, the drive mechanism is preferably comprised of compatible, opposed first and second roller assemblies adapted to engage the injecting conduit therebetween.
Thus, in one aspect of the invention, the invention is comprised of an apparatus for reciprocating an injecting conduit within a storage tank through a storage tank outlet located on the storage tank, the apparatus comprising:
(a) a drive mechanism adapted to engage the injecting conduit in order to reciprocate the injecting conduit, the drive mechanism comprising a first roller assembly disposed in a roller driving plane and an opposing second roller assembly disposed in the roller driving plane, wherein at least one of the first roller assembly and the second roller assembly is adapted to be driven by a motor and wherein the first roller assembly and the second roller assembly are adapted to engage the injecting conduit between the first roller assembly and the second roller assembly in order to reciprocate the injecting conduit in the roller driving plane; and (b) an apparatus connector adapted to connect the apparatus with the storage tank such that the storage tank outlet is aligned with the roller driving plane.
Preferably, the first roller assembly and the second roller assembly define an adjustable conduit gap between them for accommodating the injecting conduit.
The adjustable conduit gap may be adjustable by any mechanism, device or structure compatible with the first and _g_ second roller assemblies and capable of adjusting the conduit gap to accommodate the desired injecting conduit to be engaged between the roller assemblies. Further, the adjustable conduit gap is preferably adjustable in a manner and by a mechanism permitting a desired or suitable engagement or gripping force to be applied to the injecting conduit by the first and second roller assemblies. Preferably, the engagement or gripping force is sufficient to permit the drive mechanism to reciprocate the injecting conduit without significant or substantial slippage and without causing any significant or substantial structural damage to the injecting conduit.
In addition, the first roller assembly and the second roller assembly are preferably pivotably connected with each other. As a result, the first roller assembly and the second roller assembly may be moved into and out of engagement with the injecting conduit by pivoting the roller assemblies relative to each other. Accordingly, the adjustable conduit gap is preferably further adjustable by a mechanism, device or structure compatible with the first and second roller assemblies and the pivotable connection therebetween.
In the preferred embodiment, the apparatus is further comprised of a roller clamping mechanism for adjusting the conduit gap. The roller clamping mechanism is preferably comprised of a tension bolt associated with one of the first roller assembly and the second roller assembly, a clamping surface associated with the other of the first roller assembly and the second roller assembly, and a tension nut for threading on the tension bolt against the clamping surface in order to adjust the conduit gap. Further, the clamping surface is preferably comprised of a clamping plate.
The first roller assembly and the second roller assembly may have any structure and configuration compatible with their functioning as described herein and suitable for reciprocating the injecting conduit. Preferably, the first roller assembly is comprised of at least one drive roller.
Where the first roller assembly is comprised of greater than one drive roller, the connection between the first and second roller assemblies, and particularly the pivotable nature of the connection, may require the use of a different clamping mechanism to permit proper adjustment of the conduit gap and to achieve the desired engagement with the injecting conduit.

Further, the second roller assembly is preferably comprised of at least one idler roller. In the preferred embodiment, the second roller assembly is comprised of at least two idler rollers, and more preferably, three idler rollers.
The drive and idler rollers may be connected, affixed, mounted, fastened or otherwise associated with, or form part of, the first and second roller assemblies respectively in any manner and by any mechanism or structure permitting the proper functioning of the roller associated therewith. However, preferably, the first roller assembly is comprised of a first roller assembly frame and the second roller assembly is comprised of a second roller assembly frame.
Thus, in the preferred embodiment, the drive roller is associated with the first roller assembly frame and the idler rollers are associated with the second roller assembly frame.
Further, the first roller assembly frame may be connected, mounted or affixed with the second roller assembly frame in any manner permitting the adjustment of the adjustable conduit gap defined therebetween. However, in the preferred embodiment, as discussed above, the first roller assembly frame and the second roller assembly frame are pivotably connected with each other such that the first roller assembly frame pivots relative to the second roller assembly frame.
Each of the first and second roller assembly frames may be comprised of a single integral frame member or a plurality of frame members connected, mounted or affixed together, either fixedly or releasably, to form the roller assembly frame. In the preferred embodiment, the first roller assembly frame is comprised of a pair of opposing first frame members and the second roller assembly frame is comprised of a pair of opposing second frame members.
In each case, each pair of opposing frame members are preferably connected to form the respective roller assembly frame by a plurality of spacers positioned therebetween and associated fasteners.
In addition, the first roller assembly is preferably further comprised of at least one first roller rotationally supported by the first roller assembly frame and the second roller assembly is preferably further comprised of at least one second roller rotationally supported by the second roller assembly frame. Thus, in the preferred embodiment, the first roller assembly is further comprised of at least one drive roller rotationally supported between the first frame members and the second roller assembly is further comprised of at least one idler roller rotationally supported between the second frame members. As stated previously, the first roller assembly is preferably comprised of one drive roller and the second roller assembly is preferably comprised of at least two idler rollers, and preferably three idler rollers.
As indicated, the apparatus is preferably comprised of an apparatus connector, as described above. In the preferred embodiment, the apparatus connector is adapted to connect the apparatus with the storage tank such that the storage tank outlet is aligned with the roller driving plane. The alignment of the storage tank outlet with the roller driving plane facilitates the reciprocation of the injecting conduit in the roller driving plane by the drive mechanism. The apparatus connector may have any configuration and structure capable of, and suitable for, connecting the apparatus with the storage tank in the desired orientation such that the injecting conduit may be reciprocated by the drive mechanism within the storage tank through the storage tank outlet.
The apparatus connector may be associated with any of the further components or elements comprising the apparatus in order to connect the apparatus with the storage tank.
However, preferably, the apparatus connector is associated with at least one of the first roller assembly frame and the second roller assembly frame, and preferably both.
Further, the apparatus connector preferably provides a sealed connection or sealed engagement between the apparatus and the storage tank in order to inhibit or prevent any undesirable leakage or accidental spillage of fluids from the storage tank, particularly through the storage tank outlet, during the use of the apparatus. Any type or configuration of sealing device or structure may be used to provide the sealed connection.
In addition, in the preferred embodiment, the injecting conduit is engaged by the drive mechanism and extends therefrom through the apparatus connector for communication with, or access to, the storage tank through the storage tank outlet. Preferably, the injecting conduit is sealed with the apparatus connector as the injecting conduit extends therethrough in order to further inhibit or prevent any undesirable leakage or accidental spillage of fluids through the apparatus connector. Any type or configuration of sealing device or packing structure may be used to provide the desired seal between the apparatus connector and the injecting conduit extending therethrough. In the preferred embodiment, a connector annulus is defined between the apparatus connector and the injecting conduit when the injecting conduit is reciprocating within the storage tank and the apparatus further comprises a packing seal which is adapted to seal the connector annulus. More particularly, the packing seal is preferably associated with, or comprises a component or element of, the apparatus connector.
The apparatus connector may connect the apparatus with the storage tank either directly or indirectly. For instance, the apparatus connector may be connected or affixed directly with the storage tank in the desired orientation. Further, the apparatus connector may be connected or affixed with any component or portion of the storage tank. However, in this instance, the apparatus connector is preferably connected or affixed with the storage tank outlet, and particularly, with the valve structure or mechanism comprising the storage tank outlet.
Alternately, an intervening or intermediate structure or adapter component may be provided between the storage tank and the apparatus connector. In other words, the apparatus connector may be connected or affixed indirectly with the storage tank in the desired orientation.
Further, the intervening structure or adapter component may be connected or affixed between the apparatus connector and any component or portion of the storage tank. However, in this instance, the intervening structure or adapter component is preferably connected or affixed between the apparatus connector and the storage tank outlet, and particularly, the valve structure or mechanism comprising the storage tank outlet.
Where an intervening structure or adapter component is utilized, the intervening structure or adapter component provides for communication between the apparatus and the storage tank such that the injecting conduit is permitted to pass therethrough. In the preferred embodiment, the apparatus is further comprised of an adapter conduit for connection between the storage tank outlet and the apparatus connector, wherein the adapter conduit defines a primary adapter bore extending through the adapter conduit. In addition, the primary adapter bore is preferably adapted to be aligned with the roller driving plane when the injecting conduit is reciprocating within the storage tank.

Further, where the slurry is removed from the storage tank through the storage tank outlet, the adapter conduit may be configured to provide for the removal of a material from the storage tank, such as the slurry, through the adapter conduit. In this case, the adapter conduit preferably further defines a branch adapter bore for facilitating removal of a material from the storage tank when the injecting conduit is reciprocating within the storage tank.
The adapter conduit is preferably sealingly engaged or connected with each of the storage tank outlet and the apparatus connector in order to inhibit or prevent any undesirable leakage or accidental spillage of fluids through the connections during the use of the apparatus.
Thus, a sealing device or structure is preferably provided between the storage tank outlet and the adapter conduit, and may be associated or connected with one or both of the storage tank outlet and the adapter conduit. Similarly, a sealing device or structure is preferably provided between the adapter conduit and the apparatus connector, and may be associated or connected with one or both of the adapter conduit and the apparatus connector. Any type or configuration of sealing device or structure may be used to provide the sealed connection. However, in the preferred embodiment, a first threaded connection is provided which sealingly engages the valve structure of the storage tank outlet with one end of the adapter conduit and a second threaded connection is provided which sealingly engages the other end of the adapter conduit with the apparatus connector.
As indicated, at least one of the first roller assembly and the second roller assembly is adapted to be driven by a motor. Preferably, the apparatus is further comprised of the motor, wherein the motor is configured to reciprocably drive at least one of the first roller assembly and the second roller assembly.
Thus, the motor may be configured to drive both the first and second roller assemblies. In this case, the motor may be configured to reciprocably drive each of the first and second roller assemblies. Alternately, the motor may drive one of the first roller assembly and the second roller assembly in a first direction and the other of the first roller assembly and the second roller assembly in an opposed direction in order to reciprocate the injecting conduit engaged therebetween. However, preferably, the motor is configured to reciprocably drive the first roller assembly only.

Further, the motor may be comprised of a single motor capable of, and compatible with, reciprocably driving at least one of the first roller assembly and the second roller assembly.
In the preferred embodiment in which the motor reciprocably drives the first roller assembly, and the first roller assembly is comprised of at least one drive roller, a single motor may be operatively connected or engaged with each of the drive rollers for reciprocably driving each of the drive rollers. More preferably, the first roller assembly is comprised of one drive roller and a single motor is operatively connected or engaged with the drive roller such that the motor reciprocably drives the drive roller.
However, alternately, the motor may be comprised of a plurality of motors which operate together as a unit, or act in concert, to reciprocably drive at least one of the first roller assembly and the second roller assembly. As indicated above, in the preferred embodiment, the motor reciprocably drives the first roller assembly and the first roller assembly is comprised of at least one drive roller. In this case, each of the plurality of motors may be operatively connected or engaged with one or more of the drive rollers.
For instance, each of the plurality of motors may reciprocably drive the drive rollers engaged therewith. Alternately, at least one of the plurality of motors may drive at least one drive roller in a first direction, while at least one other of the plurality of motors may drive at least one other drive roller in an opposed direction in order to reciprocate the inj ecting conduit. As a final alternate where the first drive assembly is comprised of a single drive roller, a first motor may drive the drive roller in the first direction, while a second motor may drive the drive roller in the opposed direction.
The motor, whether comprised of a single motor or a plurality of motors, may be of any type or configuration capable of, and suitable for, driving the roller assembly associated therewith in the desired direction. Preferably, the motor is a reversible motor. Further, the motor may be actuated or powered in any manner, such as electrically, hydraulically, pneumatically or otherwise. Preferably, the motor is a hydraulic motor. Thus, in the preferred embodiment, the apparatus is comprised of a single reversible, hydraulic motor for reciprocably driving the first roller assembly, and preferably for reciprocably driving at least one drive roller thereof.

In addition, the apparatus may be configured to permit the controlling of the motor, and thus the operation of the apparatus, from any desired location. For instance, the apparatus may be comprised of a motor control device positioned at any location convenient for the operator of the apparatus. Further, the apparatus may be comprised of a motor control device positioned or located at, on or relatively proximate to the other components or elements of the apparatus. For instance, the motor control device may be mounted or otherwise associated with at least one of the first roller assembly frame, the second roller assembly frame and the motor.
However, preferably, the apparatus is further comprised of a remote motor control device for remotely controlling the motor or controlling the motor a selected distance therefrom by controlling the flow of the hydraulic fluid, and the direction of the flow, to the motor. The remote motor control device may actuate or control the motor in any manner, such as electrically, hydraulically, pneumatically, by transmission of radio frequency signals or otherwise. In the preferred embodiment, the remote motor control device is electrically connected with or electrically controls the motor, and the flow of hydraulic fluid therethrough, either directly or indirectly. For instance, the remote motor control device may be electrically connected with the motor, wherein an electrical cable or line of a desired length extends between the remote control motor device and the motor.
In addition, the apparatus is preferably further comprised of a stabilizing support for enabling the apparatus to engage a ground surface. Thus, when the apparatus is connected with the storage tank, the stabilizing support engages the ground surface to steady, or to more firmly or securely hold, the apparatus during the use thereof. The stabilizing support may be comprised of any structure or mechanism engagable with the ground surface and capable of, or compatible with, stabilizing, securing or steadying the apparatus. Further, the stabilizing support preferably stabilizes, secures or supports the apparatus at a desired height relative to the ground surface. The desired height of the apparatus from the ground surface will be compatible with and dependent upon the location of the storage tank outlet on the storage tank.. In the preferred embodiment, the stabilizing support has an adjustable support height. The adjustable support height permits the apparatus to be adapted for use with varying locations of the storage tank outlet on the storage tank. Thus, once the apparatus is connected with the storage tank, the stabilizing support may be adjusted to a desired support height such that the ground surface is engaged thereby.

Finally, the injecting conduit is preferably supported during the reciprocation of the injecting conduit at at least one location or position along the length of the injecting conduit by a suitable support structure or support mechanism. Further, the injecting conduit is preferably supported at a location or position a spaced distance from a nozzled end or stinger of the injecting conduit extending within the storage tank. More particularly, the injecting conduit is comprised of the nozzled end extending within the storage tank and an opposed end extending away from the storage tank. In the preferred embodiment, the injecting conduit is preferably supported during the reciprocation of the injecting conduit at, adjacent or relatively proximate to the opposed end. The placement of the support mechanism or support structure at, adjacent or relatively proximate to the opposed end of the injecting conduit minimizes the interference of the support mechanism with the reciprocation of the injecting conduit.
The support mechanism or support structure may be stationary or fixed relative to the ground such that the injecting conduit reciprocates relative to the stationary support mechanism or support structure. In this instance, a compatible rail or support system may be provided along a portion of the length of the opposed end of the reciprocating conduit.
However, preferably, the support mechanism or support structure for the injecting conduit is comprised of a reciprocating carnage.
Thus, in the preferred embodiment, the apparatus is further comprised of a carriage adapted for supporting the injecting conduit, wherein the carriage is reciprocable relative to the drive mechanism as the injecting conduit reciprocates. The carriage may have any structure or configuration, and may be adapted in any manner, permitting the carriage to support the injecting conduit at the desired position while concurrently reciprocating with the injecting conduit during use of the apparatus. Preferably, the carnage is engagable with the ground surface and is capable of or suitable for securing or steadying the injecting conduit during the use of the apparatus.
Preferably, the carriage is comprised of wheels for engaging the ground surface. Thus, as the injecting conduit reciprocates, the carnage is moved or wheeled along the ground surface relative to the drive mechanism.

Further, the carnage preferably secures or supports the injecting conduit at a desired height relative to the gmund surface. The desired height of the injecting conduit from the ground surface will be compatible with and dependent upon the location of the storage tank outlet on the storage tank. Further, the desired height will also be selected to facilitate, and to be compatible with, the reciprocation of the injecting conduit in the roller driving plane.
In the preferred embodiment, the carriage has an adjustable carriage height. The adjustable carnage height permits the carnage to be adapted for use with varying locations of the storage tank outlet on the storage tank and for use with varying orientations of the roller driving plane. Thus, once the apparatus is connected with the storage tank and the injecting conduit is supported by the carnage, the carriage may be adjusted to a desired carriage height compatible with the reciprocation of the injecting conduit in the roller driving plane.
SUMMARY OF DRAWINGS
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
Figure 1 is an isometric view of a preferred embodiment of an apparatus for reciprocating an injecting conduit within a storage tank;
Figure 2 is an exploded view of the apparatus shown in Figure l, including a first roller assembly and a second roller assembly;
Figure 3 is a side view of the apparatus of Figure 1, wherein the injecting conduit is engaged thereby for reciprocation;
Figure 4 is a longitudinal sectional view of the apparatus shown in Figure 3, wherein the apparatus is shown in a closed position engaging the injecting conduit for reciprocation;
Figure 5 is a longitudinal sectional view of the apparatus shown in Figure 3, wherein the apparatus is shown in an open or pivoted position disengaging the injecting conduit;

Figure 6 is a side view of the apparatus shown in Figure 1, wherein the apparatus is connected with the storage tank, wherein Figure 6A shows a detailed view of a stabilizing support of the apparatus;
Figure 7 is a cross-sectional view of a drive mechanism of the apparatus taken along lines 7 - 7 of Figure 3;
Figure 2;
in Figure 2;
Figure 2;
Figure 8 is an exploded view of a portion of the first roller assembly shown in Figure 9 is an exploded view of a further portion of the first roller assembly shown Figure 10 is an exploded view of a portion of the second roller assembly shown in Figure 11 is an isometric view of an apparatus connector of the apparatus of Figure l, shown in isolation;
Figure 12 is an isometric view of a roller clamping mechanism of the apparatus of Figure 1, shown in isolation;
Figure 13 is an isometric view of an assembly pin of the apparatus of Figure l, shown in isolation;
Figure 14 is a schematic diagram of the apparatus in use, connected with a storage tank as shown in Figure 6.
DETAILED DESCRIPTION
Refernng to Figures 6 and 14, the present invention is comprised of an apparatus (20) for manipulating, and particularly for reciprocating, an injecting conduit (22) within a storage tank (24) through a storage tank outlet (26) located on the storage tank (24).
The apparatus (20) may be used in any application in which the manipulation, and particularly the reciprocation, of the injecting conduit (22) in the storage tank (24) is desirable. However, the apparatus (20) is primarily intended for use in cleaning the storage tank (24), and more particularly, in removing S sediment or settled materials from the storage tank (24).
In the preferred embodiment for use in the heavy oil industry, produced fluids (28) are conducted into the storage tank (24) where they are permitted to separate into an uppermost heavy oil or hydrocarbon layer (34), a lowermost sediment layer (32) and an intermediate water layer (30). The sediment layer (32) is typically comprised of sand, sludge, scale and other settled solid, waste or heavier materials. The sediment layer (32) naturally tends to settle at the bottom or lowermost portion of the storage tank (24). The heavy oil and water layers (34, 30) are each regularly removed to permit further produced fluids (28) from the well to be introduced into the storage tank (24) for separation. Further, the collection or settlement of the sediment layer (32) at the bottom of the storage tank (24) reduces the capacity of the storage tank (24) over time to accept further produced fluids (28). Thus, the sediment layer (32) must also be regularly removed.
Preferably, the storage tank (24) is cleaned, and the sediment layer (32) removed, without interfering with or significantly interrupting the continued operation or use of the storage tank (24).
The injecting conduit (22) is thus provided for performing the cleaning operation.
In particular, referring to Figures 6 and 14, the injecting conduit (22) is preferably comprised of an elongate tubular structure or cylindrical rod defining a fluid passage (36) therethrough for conducting fluids, typically under pressure, and may be referred to in the industry as a "stinger rod." Further, the injecting conduit (22) has a first end (38) and an opposed second end (40) defining a length of the injecting conduit (22) therebetween. Further, the fluid passage (36) preferably extends for the length of the injecting conduit (22) between the first and second ends (38, 40). The injecting conduit (22) is preferably comprised of a single, integral tubular member or cylindrical rod extending the entire length between the first and second ends (38, 40). However, alternately, the injecting conduit (22) may be comprised of a plurality of tubular members connected or fastened together to form the injecting conduit (22). In this instance, the connection or joints between the plurality of tubular members preferably provides a sealed connection, to inhibit or prevent any leakage of fluids therefrom, and does not interfere with the passage of the injecting conduit (22) through the apparatus (20).
The first end (38) of the injecting conduit (22) is adapted for insertion in the storage tank (24) through the storage tank outlet (26) and may be referred to in the industry as a "stinger."
Further, the first end (38) is adapted and configured to inject pressurized fluid therefrom in a manner suitable for cleaning the storage tank (24). Although any suitable configuration of the first end (38) may be used which is compatible with the intended cleaning operation, the first end (38) is preferably comprised of a plurality of nozzles, preferably jetted nozzles.
The opposed second end (40) of the injecting conduit (22) is adapted and configured for connection with a source of the pressurized fluid such that the pressurized fluid is conveyed into the fluid passage (36) of the injecting conduit (22). In the preferred embodiment, a first hose or line (42) is connected with the second end (40) to supply the pressurized fluid.
More particularly, in use, the first end (38) of the injecting conduit (22) is inserted into the storage tank (24) through the storage tank outlet (26), while the second end (40) of the injecting conduit (22) extends away from the storage tank (24) for connection with the first hose (42). As shown in Figure 14, the first hose (42) preferably extends between the second end (40) of the injecting conduit (22) and a pressure truck (44). Any conventional or known pressure truck (44) may be used which is capable of supplying a pressurized fluid to the first hose (42) for communication into the injecting conduit (22).
Any desirable pressurized fluid suitable for use in the intended cleaning operation may be used. However, in the preferred embodiment, a portion of the separated produced water is removed from the water layer (30) in the storage tank (24) and conducted into the pressure truck (44). The produced water may be heated in the storage tank (24) prior to conducting it to the pressure truck (44) to a desired temperature, and typically to a temperature of about 90 degrees Celsius, which may enhance the cleaning operation and particularly enhance the action of the injected pressurized produced water in the storage tank (24). The pressure truck (44) pressurizes the produced water to a desirable injecting pressure, suitable for the particular cleaning operation.
The hot, pressurized produced water is then conducted or pumped by the pressure truck (44) into the first hose (42), through the fluid passage (36) of the injecting conduit (22) and into the storage tank (24) through the first end (38) of the injecting conduit (22). Following completion of the cleaning operation, the produced water is preferably returned to the storage tank (24).
S The apparatus (20) may be adapted or configured for reciprocating an injecting conduit (22) having any desirable diameter. However, the diameter of the injecting conduit (22) is preferably selected to be compatible with, and suitable for, the pressurized fluid to be conducted therethrough and the intended cleaning operation. In the preferred embodiment, the injecting conduit (22) has a diameter of about one inch (2.54 cm).
Further, the apparatus (20) may be used for reciprocating an injecting conduit (22) having any desirable length. The particular configuration of the apparatus (20), as described in detail below, permits the apparatus (20) to reciprocate any length of the injecting conduit (22) or to reciprocate the injecting conduit (22) for any desired distance. Once the injecting conduit (22) is 1 S engaged by the apparatus (20), the desired length of injecting conduit (22) may be reciprocated for the desired distance in either direction repeatedly or in a continuous manner.
Thus, as compared with prior, known apparatuses, there is no need to disrupt the reciprocation of the injecting conduit (22) to disengage the apparatus (20) from, or re-engage the apparatus with, the injecting conduit (22) during the cleaning operation.
The length of the injecting conduit (22) is preferably selected to be compatible with, and suitable for, the intended cleaning operation. Thus, the length of the injecting conduit (22) is selected to be compatible with the storage tank (24) to be cleaned, and to be compatible with the size and configuration of the particular storage tank (24). Preferably, the length is selected such that when the injecting conduit (22) is drivingly engaged by the apparatus (20), the injecting conduit (22) may be reciprocated within the storage tank (24) such that the injecting conduit (22) extends across substantially the entire diameter of the storage tank (24).
However, the length of the injecting conduit (22) is also selected to minimize or reduce any risk or likelihood of the first end (38) of the injecting conduit (22) contacting and damaging the wall of the storage tank (24) during the operation of the apparatus (20). Similarly, the injecting conduit (22) may have any compatible diameter sufficient for conducting the pressurized fluid therethrough. In the preferred embodiment, the injecting conduit (22) has a diameter of about 1 inch (2.54 cm).

To remove the sediment layer (32) from the storage tank (24), the first end (38) of the injecting conduit (22) is preferably positioned at, adjacent or in proximity to the sediment layer (32) within the storage tank (24). The pressurized fluid is then injected from the first end (38) into the sediment layer (32) to create turbulence within, and to otherwise disturb, the sediment layer (32). During the injection of the pressurized fluid from the injecting conduit (22), the apparatus (20) reciprocates the injecting conduit (22) such that the first end (38) correspondingly moves within the storage tank (24). As a result, a slurry is created comprised of the liquefied sediment layer (32).
As shown in Figure 14, a second hose or line (46) is preferably connected or communicates with the storage tank outlet (26), either directly or indirectly as described in detail below. Further, the second hose (46) preferably extends to a vacuum truck or a sand transport vehicle (48). Any conventional or known vacuum truck or sand transport vehicle (48) may be used which is capable of vacuuming, suctioning, pumping or otherwise withdrawing and removing the slurry from the storage tank (24). Thus, the vacuum truck or sand transport vehicle (48) creates a suction which draws the slurry from the storage tank (24) through the storage tank outlet (26) and into the second hose (46) to be conducted into the vacuum truck or sand transport vehicle (48).
The apparatus (20) is adapted and configured to reciprocate the injecting conduit (22) in the storage tank (24). In other words, the inj ecting conduit (22) is alternately moved in opposed directions or in a backwards and forwards manner by the apparatus (20). Further, the apparatus (20) may be configured for utilization with any desired type, size or configuration of storage tank (24) which is desired to be cleaned or have the sediment layer (32) removed therefrom. However, in order to provide access to the interior of the storage tank (24) by the injecting conduit (22), the storage tank (24) must be of a type comprised of or associated with the storage tank outlet (26). In the preferred embodiment, the storage tank (24) is of a type typically or conventionally used in the oil and gas industry for storing and/or separating heavy oil.
The storage tank outlet (26) permits or provides access of the injecting conduit (22) to the interior of the storage tank (24). In other words, the storage tank outlet (26) provides communication between the interior and the exterior of the storage tank (24).
Preferably, the storage tank outlet (26) is comprised of a conventional valve structure or mechanism permitting the selective opening and closing of the storage tank outlet (26). The apparatus (20) is preferably connectable with the storage tank (24), in the manner described below, regardless of the particular location of the storage tank outlet (26) on the storage tank (24). In other words, the apparatus (20) is preferably adaptable such that it may be connected with the storage tank (24) to reciprocate the injecting conduit (22) through any location of the storage tank outlet (26) on the storage tank (24).
However, the storage tank outlet (26) is preferably positioned at a location on the storage tank (24) which facilitates access to the storage tank outlet (26).
Further, the storage tank outlet (26) is also preferably positioned at, adjacent or proximate to the bottom or lowermost portion or section of the storage tank (24) to facilitate access to the sediment layer (32) through the storage tank outlet (26). Referring to Figure 6, the storage tank (24) may be located or positioned upon a stand or other lower support structure. However, typically, the lowermost portion of the storage tank (24) is supported directly upon the ground surface or is buried or positioned beneath the ground surface. The storage tank (24) may be mounted or supported above, upon or beneath the ground surface in any manner permitting access to the storage tank outlet (26).
Referring to Figures I - 13, the apparatus (20) is comprised of a drive mechanism (50) which engages the injecting conduit (22) such that the injecting conduit (22) may be reciprocated thereby and an apparatus connector (52) adapted to connect the apparatus (20) with the storage tank (24), and preferably with the storage tank outlet (26). In the preferred embodiment, the drive mechanism (50) is comprised of a first roller assembly (54) disposed in a roller driving plane (56) and an opposing second roller assembly (58) disposed in the roller driving plane (56). The first roller assembly (54) and the second roller assembly (58) are adapted to engage the injecting conduit (22) therebetween in order to reciprocate the injecting conduit (22) in the roller driving plane (56). Further, the apparatus connector (52) is adapted to connect the apparatus (20) with the storage tank (24) such that the storage tank outlet (26) is aligned with the roller driving plane (56). Finally, the apparatus (20) may be actuated manually by manually driving at least one of the first and second roller assemblies (54, 58).
However, in the preferred embodiment, at least one of the first roller assembly (54) and the second roller assembly (58) is adapted to be driven by a motor (60).

Referring to Figures 1 - 10, in the preferred embodiment, the first roller assembly (54) is comprised of a first roller assembly frame (62). Similarly, the second roller assembly (58) is comprised of a second roller assembly frame (64).
Further, in the preferred embodiment, the first roller assembly frame (62) is comprised of a pair of opposing first frame members (66), which are preferably substantially identical to each other. The pair of opposing first frame members (66) are connected or mounted together, and are held in a desired position in opposition to each other, by a least one, and preferably a plurality of, first spacers (70). Each of the first spacers (70) is positioned between and engaged with each of the first frame members (66). In particular, opposed ends of each of the first spacers (70) abuts against the adjacent opposed first frame members (66). The size of the first spacer (70), and thus the distance between the opposed first frame members (66), is selected to provide sufficient space to contain or house the other components of the first roller assembly (54) therebetween, as described below.
The first spacers (70) may be comprised of any structure or mechanism capable of connecting or mounting the first frame members (66) together to form the first roller assembly frame (62) and capable of spacing the first frame members (66) in opposition a desired distance apart. For instance, if desired, the first spacer (70) may be comprised of a solid rod having opposed ends fixedly or permanently attached, such as by welding, with the adjacent surfaces of the first frame members (66). However, in order to facilitate access to the other components of the first roller assembly (54) for ease of repair and replacement, the first spacer (70) is preferably releasably or detachably mounted between the first frame members (66).
Thus, in the preferred embodiment, each of the first spacers (70) is preferably comprised of a tubular member defining a bore (72) therethrough and a compatible fastener (76) for passage through the bore (72). The fastener (76) may be comprised of any compatible bolt, screw or fastening structure able to be received within and passed through the bore (72), but is preferably a bolt fastened or tightened in position with a compatible nut at one end thereof.
Further, each of the first frame members (66) defines a corresponding aperture (74) therein such that the bore (72) of each of the first spacers (70) may be aligned with a corresponding aperture (74) at each end thereof when the first spacer (70) is placed in position between the first frame members (66). The fastener (76), preferably' a bolt, may then be extended through each pair of apertures (74) and the bore (72) of the corresponding first spacer (70) positioned therebetween and tightened or otherwise affixed or held in position, such as by the compatible nut, in order to connect or mount the pair of opposed first frame members (66) in the desired position relative to each other.
Similarly, in the preferred embodiment, the second roller assembly frame (64) is comprised of a pair of opposing second frame members (68), which are preferably substantially identical to each other. The pair of opposing second frame members (68) are connected or mounted together, and are held in a desired position in opposition to each other, by a least one, and preferably a plurality of, second spacers (78). Each of the second spacers (78) is positioned between and engaged with each of the second frame members (68). In particular, opposed ends of each of the second spacers (78) abuts against the adjacent opposed second frame members (68).
The size of the second spacer (78), and thus the distance between the opposed second frame members (68), is selected to provide sufficient space to contain or house the other components of the second roller assembly (58) therebetween, as described below.
The second spacers (78) may be comprised of any structure or mechanism capable of connecting or mounting the second frame members (68) together to form the second roller assembly frame (64) and capable of spacing the second frame members (68) in opposition a desired distance apart. For instance, if desired, the second spacer (78) may be comprised of a solid rod having opposed ends fixedly or permanently attached, such as by welding, with the adjacent surfaces of the second frame members (68). However, in order to facilitate access to the other components of the second roller assembly (58) for ease of repair and replacement, the second spacer (78) is preferably releasably or detachably mounted between the second frame members (68).
Thus, in the preferred embodiment, each of the second spacers (78) is preferably comprised of a tubular member defining a bore (80) therethrough and a compatible fastener (84) for passage through the bore (80). The fastener (84) may be comprised of any compatible bolt, screw or fastening structure able to be received within and passed through the bore (80), but is preferably a bolt fastened or tightened in position with a compatible nut at one end thereof.

Further, each of the second frame members (68) defines a corresponding aperture (82) therein such that the bore (80) of each of the second spacers (78) may be aligned with a corresponding aperture (82) at each end thereof when the second spacer (78) is placed in position between the second frame members (68). The fastener (84), preferably a bolt, may then be extended through each pair of apertures (82) and the bore (80) of the corresponding second spacer (78) positioned therebetween and tightened or otherwise affixed or held in position, such as by the compatible nut, in order to connect or mount the pair of opposed second frame members (68) in the desired position relative to each other.
The first roller assembly (54) and the second roller assembly (58) may be connected, mounted or joined together to form the apparatus (20) in any suitable manner and by any compatible connection mechanism. However, the first roller assembly (54) and the second roller assembly (58) are preferably connected, mounted or joined together such that the first and second roller assemblies (54, 58) are disposed in the roller driving plane (56) during the reciprocation of the injecting conduit (22) engaged therebetween. In addition, in order to permitting the engagement of the injecting conduit (22) therebetween, the size of the first and second spacers (70, 78) are selected to permit at least a portion of one of the first and second roller assemblies frames (62, 64) to fit within the other. In the preferred embodiment, the first roller assembly frame (62) permits or provides for at least a portion of the second roller assembly frame (64) to be accommodated or contained therein, as shown in Figure 1.
Further, the first roller assembly (54) and the second roller assembly (58) are preferably connected, mounted or joined together in a manner permitting ready or relatively easy access to the components thereof for repair and replacement, and permitting ready or relatively easy access to the injecting conduit (22). Preferably, the first roller assembly (54) and the second roller assembly (56) are pivotably connected with each other.
More particularly, in the preferred embodiment as shown in Figures 4 and 5, the first roller assembly frame (62) is pivotably connected with the second roller assembly frame (64).
Thus, the first roller assembly frame (62) may be pivoted relative to the second roller assembly frame (64) away from the second roller assembly frame (64) to release or disengage the injecting conduit (22) therebetween and to provide access to the components of the first and second roller assembly frames (62, 64), as shown in Figure 5. Conversely, the first roller assembly frame (62) may be pivoted relative to the second roller assembly frame (64) towards the second roller assembly frame (64) to engage the injecting conduit (22) therebetween and such that the first and second roller assembly frames (62, 64) are disposed in the roller driving plane (56), as shown in Figure 4.
In addition, the first roller assembly frame (62) has a first end (86) and a second end (88). Similarly, the second roller assembly frame (64) has a first end (90) and a second end (92).
The first and second roller assembly frames (62, 64) are mounted together such that the respective first ends (86, 90) are adjacent each other and the respective second ends (88, 92) are adjacent each other. Further, as indicated above, the first and second roller assembly frames (62, 64) are configured to permit at least a portion of the second roller assembly frame (64) to be received within the first roller assembly frame (62). In the preferred embodiment, at least a portion of the first end (90) of the second roller assembly frame (64) is received or accommodated within the first end (86) of the first roller assembly frame (62).
As well, the first and second roller assembly frames (62, 64) may be mounted together in any desired orientation relative to each other. Thus, for instance, the first and second roller assemblies (54, 58) may be positioned side by side or the first roller assembly (54) may be positioned either above or below the second roller assembly (58). In the preferred embodiment, the first roller assembly (54) is positioned above the second roller assembly (58). Further, the first roller assembly frame (62) preferably pivots in an upward direction away from the second roller assembly frame (64) while the second roller assembly frame (64) remains relatively stationary.
The pivotable connection may be provided by any suitable pivoting mechanism or structure. However, preferably, the first and second roller assembly frames (62, 64) pivot about either the first ends (86, 90) or the second ends (88, 92) of the first and second roller assembly frames (62, 64) respectively. In the preferred embodiment, the pivotable connection is provided at the overlapping first ends (86, 90), in which a portion of the first end (90) of second roller assembly frame (64) is received or accommodated within the first end (86) of the first roller assembly frame (62), such that the first and second roller assembly frames (62, 64) pivot about their respective first ends (86, 90).

In the preferred embodiment, each of the opposed first frame members (66) defines opposed apertures (94) at the first end (86) of the first roller assembly frame (62). Similarly, each of the opposed second fi~ame members (68) defines opposed apertures (96) at the first end (90) of the second roller assembly frame (64). When the first and second roller assembly frames (66, 68) are disposed in the roller driving plane (56) and are positioned adjacent each other for engagement of the injecting conduit (22), the opposed apertures (94) of the first roller assembly frame (62) correspond and align with the apertures (96) of the second roller assembly frame (64), as shown in Figures 1 - 5. A compatible fastener (98) may then be received within and passed through each of the apertures (94, 96) and fastened or tightened into position in order to provide the pivotable connection between the first and second roller assembly frames (62, 64). In particular, the first and second roller assembly frames (62, 64) pivot relative to each other about the fastener (98) connecting their respective first ends (86, 90).
The fastener (98) may be comprised of any compatible bolt, screw or fastening structure able to be received within and passed through the apertures (94) and capable of being fastened, tightened or otherwise held in position. Further, the fastener (98) may be fixedly or permanently fastened or maintained within the apertures (94, 96) to prevent the disengagement or separation of the first and second roller assembly frames (62, 64) from each other. However, preferably, the fastener (98) is releasably or removably fastened or maintained within the apertures (94, 96) such the first and second roller assembly frames (62, 64) may be completely disengaged or separated from each other. I
In the preferred embodiment, referring particularly to Figures 1 and 13, the fastener (98) is comprised of a removable assembly pin (100) having a handle (102) or gripping structure at one end and a hole (104) or slot at the other end. The assembly pin (100) is extended through the apertures (94, 96) such that the opposed handle (102) and hole (104) at the ends of the assembly pin (100) extend away from the apertures (94, 96) on opposed sides of the apparatus (20). In order to hold the assembly pin (100) in position such that it is not removable from the apertures (94, 96), a quick release pin (106) or other suitable structure is passed through the hole (104) such that the end of the assembly pin (100) including the hole (104) may not be withdrawn through the apertures (94, 96). When it is desirable to separate or disengage the first and second roller assembly frames (62, 64), the quick release pin (106) is removed from the hole (104), the handle (102) is gripped and the assembly pin (100) is withdrawn from the apertures (94, 96).
Preferably, refernng to Figures 3, 4 and 7, the first roller assembly (54) and the second roller assembly (58) define an adjustable conduit gap (108) between them for accommodating the injecting conduit (22). The adjustable conduit gap is adjustable to permit a desired diameter of the injecting conduit (22) to be engaged and to permit a desired or suitable engagement or gripping force to be applied to the injecting conduit (22) by the first and second roller assemblies (54, 58). Preferably, the engagement or gripping force is sufficient to permit the first roller assembly (54) and the second roller assembly (58) to reciprocate the injecting conduit (22) without significant or substantial slippage and without causing any significant or substantial structural damage to the injecting conduit (22). In other words, the engagement or gripping force must not crush or significantly deform the injecting conduit (22) but be of a sufficient magnitude to move the injecting conduit (22) in the desired direction in a smooth, consistent or uninterrupted manner. Finally, it has been found that the conduit gap (108) may require further adjusting as one or more rollers, and particularly a drive roller (134), wear.
The adjustable conduit gap (108) may be adjusted to vary the engagement or gripping force applied by the first and second roller assemblies (54, 58) to the injecting conduit (22) by any adjustment mechanism. However, preferably, the first and second roller assembly frames (62, 64) define the adjustable conduit gap (108) and the adjustment mechanism is associated with the first and second roller assembly frames (62, 64). In other words, the adjustable conduit gap (108) is varied or adjusted by moving the first and second roller assembly frames (62, 64) relative to each other.
In the preferred embodiment, referring to Figures 1 - 4 and 12, the apparatus (20) is further comprised of a roller clamping mechanism (110) for adjusting the adjustable conduit gap ( 108). The roller clamping mechanism ( 110) preferably extends between the first and second roller assembly frames (62, 64) and may be tightened in order to move the first and second roller assembly frames (62, 64) in closer proximity or towards to each other or loosed or released in order to move the first and second roller assembly frames (62, 64) out of proximity or away from each other. In the preferred embodiment, as shown in Figure 12, the roller clamping mechanism ( 110) is a tension bolt ( 112) associated with the second roller assembly frame (64), a clamping surface (114) associated with the first roller assembly frame (62) and a tension nut (116) for threading on the tension bolt (112) against the clamping surface (114) in order to adjust the conduit gap (108).
More particularly, the tension bolt ( 112) has a threaded end ( 118) for engaging the tension nut (116) and an opposed sleeve end (120) for fastening with the second roller assembly frame (64). The sleeve end (120) may be fixedly or permanently attached with the second roller assembly frame (64), such as by welding. However, preferably, the sleeve end (120) is releasably or detachably mounted, fastened or affixed with the second roller assembly frame (64). In the preferred embodiment, the sleeve end (120) is comprised of a tubular member defining a bore (122) therethrough, wherein a compatible removable fastener (124) is receivable therein. Further, each of the opposed second frame members (68) comprising the second roller assembly frame (64) defines a corresponding aperture ( 126) therein such that the bore ( 122) of the sleeve end ( 120) may be aligned with the corresponding apertures (126) when the sleeve end (I20) of the tension bolt (112) is placed in position between the second frame members (68). The fastener (124) may then be extended through the apertures (126) and the bore (122) of the sleeve end (120) in order to connect or mount the tension bolt (112) in the desired position.
The fastener (124) may be comprised of any compatible bolt, screw or fastening structure able to be received within and passed through the apertures (126) and the bore (122) of the sleeve end (120) and capable of being fastened, tightened or otherwise held or maintained in position. Further, the fastener ( 124) may be fixedly or permanently fastened or maintained in position, the fastener (124) is preferably releasably or removably fastened or maintained in position such the tension bolt (112) may be disengaged or released from the second frame members (68). In the preferred embodiment, the fastener (124) is comprised of a further removable assembly pin (100), as described previously above and as shown in Figure 13. Thus, the assembly pin (100) is extended through the corresponding apertures (126) in the second frame members (68) and the bore (122) of the sleeve end (120) such that the opposed handle (102) and hole (104) at the ends of the assembly pin (100) extend away from the apertures (126). The quick release pin (106) is then passed through the hole (104) such that the end of the assembly pin (100) including the hole (104) may not be withdrawn through the adjacent aperture (126). To release the tension bolt (112), the quick release pin (106) is removed from the hole (104), the handle (102) is gripped and the assembly pin (100) is withdrawn from the apertures (126) and the bore (122).
Further, the clamping surface (114) of the roller clamping mechanism (110) is preferably comprised of a clamping plate (128) for engaging the first roller assembly frame (62).
In the preferred embodiment, the clamping plate (128) defines an aperture (130) for the passage of the threaded end (118) of the tension bolt (112) therethrough. Further, the clamping plate (128) is adapted to engage the opposed first frame members (66). Preferably, an uppermost portion of each of the opposed first frame members (66) defines a clamping slot (132) for receiving the compatible clamping plate (128) therein. Thus, as the tension nut (116) is threaded onto the threaded end (118) of the tension bolt (112), the tension nut (116) acts against the clamping plate (128) which correspondingly engages and acts against the first frame members (66).
Thus, in use, the sleeve end (120) of the tension bolt (112) is mounted with the second roller assembly frame (64) by the assembly pin (100). The threaded end (118) of the tension bolt (112) is passed through the aperture (130) in the clamping plate (128) and the clamping plate (128) is moved into engagement with the clamping slots (132) defined by the first roller assembly frame (62). The tension nut ( 116) is then threaded onto the threaded end ( 118) of the tension bolt ( 112) until the tension nut ( 116) abuts against the clamping plate ( 128). Further tightening of the tension nut ( 116), or further threading of the tension nut ( 116) onto the tension bolt (112), acts against the clamping plate (128) in order to move the clamping plate (128) towards or into closer proximity with the sleeve end (120) of the tension bolt (112), thereby adjust the conduit gap (108) between the first and second roller assembly frames (62, 64).
Further, referring to Figures 1 - 10, the first roller assembly (54) and the second roller assembly (58) are each preferably comprised of at least one roller for engaging the injecting conduit (22) therebetween. Further, at least one of the rollers is adapted to be driven by the motor (60) to reciprocate the injecting conduit (22) in the desired direction.
In the preferred embodiment, the first roller assembly (54) is comprised of at least one drive roller (I34). More preferably, the first roller assembly (54) is comprised of only one drive roller (134). A single drive roller (134) has been found to be particularly compatible with the roller clamping mechanism (110) described herein and the pivotable nature of the first and second roller assembly frames (62, 64) in order to achieve a desired engagement of the drive roller (134) with the injecting conduit (22). In the event that greater than one drive roller (134) is desired, one or both of the manner of connection between the first and second roller assembly frames (62, 64) and the roller clamping mechanism (110) may require modification in order to achieve the desired engagement of each of the drive rollers (134) with the injecting conduit (22).
The drive roller (134) may be associated with the first roller assembly frame (62) in any manner permitting its functioning as described herein. However, preferably, the drive roller (134) is rotationally supported by the first roller assembly frame (62) between the opposed first frame members (66). Any suitable drive roller may be used and the drive roller (134) may be rotationally supported between the first frame members (66) in any suitable manner permitting the drive roller (134) to rotate upon actuation by the motor (60) to reciprocate the injecting conduit (22).
However, in the preferred embodiment, the drive roller (134) is preferably comprised of an outermost drive surface (138) and an associated drive shaft (140). The outermost drive surface (138) is configured to be compatible with the injecting conduit (22) to be engaged thereby. Thus, the dimensions of the drive roller (134) are selected to correspond with the dimensions, and particularly the diameter, of the injecting conduit (22) as shown in Figure 7.
Further, the drive shaft (140) is preferably integrally formed with the drive surface (138) or is fixedly engaged therewith such that the drive shaft (140) and the drive surface (138) rotate together as a unit upon actuation of the drive shaft ( 140) by the motor (60). In this regard, the motor (60) may drivingly engage the drive shaft (140) in any manner, such as by a corresponding, compatible keyed shaft (61) comprising the motor (60), as shown in Figure 9.
Finally, the drive shaft (140) is preferably rotatably mounted with the opposed first frame members (66) by one or more suitable bearings (142), such as roller bearings, positioned or acting between the drive shaft (140) and each of the first frame members (66).
In the preferred embodiment, the drive shaft (140) is preferably removably or detachably mounted with the first frame members (66) to facilitate the repair and replacement of the drive roller (134). More particularly, each of the opposed first frame members (66) defines a corresponding aperture (143) for receipt of an end of the drive shaft (140) and associated bearing (142) therein. The corresponding apertures (143) permit access of the motor (60) to a desired end of the drive shaft (140). The other end of the drive shaft (140) not engaged with the motor (60) may be protected by a cover (145) if desired. Further, if desired, as shown in Figures 4 and 5, a shield or guard (141) may be provided between the first frame members (66) about the drive roller (134) in order to protect the drive roller (134) and inhibit accidental contact therewith during use of the apparatus (20). Preferably, the shield or guard ( 141 ) is comprised of a metal netting.
The second roller assembly (58) is preferably comprised of at least one idler roller (136). In the preferred embodiment, the second roller assembly (58) is comprised of three idler rollers (136) in order to provide a desirable amount of support to the injecting conduit (22). The idler rollers (136) may be associated with the second roller assembly frame (64) in any manner permitting their functioning as described herein. However, preferably, the idler rollers (136) are rotationally supported by the second roller assembly frame (64) between the opposed second frame members (68). Any suitable idler rollers may be used and the idler rollers (136) may be rotationally supported between the second frame members (68) in any suitable manner permitting the idler rollers (136) to rotate upon the reciprocation of the injecting conduit (22) thereon.
However, in the preferred embodiment, as shown in Figure 10, each of the idler rollers (136) is preferably comprised of an outermost idler surface (144) and an associated idler shaft (146). The outermost idler surface (144) is configured to be compatible with the injecting conduit (22) to be engaged thereby and the corresponding drive surface (138) of the drive roller (134) as shown in Figure 7. Thus, the dimensions of the idler roller (136) are selected to correspond with the dimensions, and particularly the diameter, of the injecting conduit (22).
Further, the idler surface (144) is preferably integrally formed with the idler shaft (144). Further, the idler shaft (144) is preferably rotatably mounted between, or engaged with, the opposed second frame members (68) by one or more bearings (148) positioned at each end of the idler shaft (144).
Thus, the idler shaft ( 144) rotates about the bearings ( 148), which are fixed or fastened with the adjacent second frame member (68).
In the preferred embodiment, as shown in Figure 10, the bearings ( 148) are threaded for engagement with correspondingly threaded nuts (150). Further, each of the opposed second frame members (68) defines a corresponding aperture (152) for passage of an end of each threaded nut (150) therethrough. Thus, the bearings (148) may be positioned at the ends of each idler roller ( 136) and held in position by threaded engagement with a corresponding nut ( 150). Further, if desired, a shield or guard (not shown) may be provided between the second frame members (68) about the idler rollers (136) in order to protect the idler rollers (136) and inhibit accidental contact therewith during use of the apparatus (20). Preferably, the shield or guard is comprised of a metal netting.
Further, the drive roller (134) and the idler rollers (136), and particularly the drive surface (138) and the idler surfaces (144), may each be comprised of any suitable material capable of securely engaging the injecting conduit (22). Preferably, the materials are selected such that the contact or engagement between the drive roller (134) and the idler rollers (136) and the injecting conduit (22) is most likely to result in the wearing or erosion of the drive roller (134), and particularly the drive surface (138), over time as compared with the idler rollers (136) and the injecting conduit (22). In other words, the drive roller (134) is designed to be the sacrificial component or is designed to fail prior to the idler rollers (136) or the injecting conduit (22).
Failure of the injecting conduit (22) is particularly undesirable given the potential for leakage of fluids therefrom. In the preferred embodiment, the drive surface (138) is comprised of steel, while the idler surfaces (144) are comprised of hardened steel. Further, if desired, one or both of the drive surface (138) and the idler surfaces (144) may be comprised of a coating or covering of a non-slip material or other material for reducing any potential slippage or increasing the friction between the injecting conduit (22) and the drive and idler surfaces (138, 144).
As indicated, the apparatus (20) is preferably comprised of the motor (60) for reciprocably driving the drive roller (134). In particular, the keyed shaft (61) of the motor (60) is adapted to operatively engage the drive shaft (140) of the drive roller (134) such that rotation of the drive shaft (140) by the motor (60) moves the injecting conduit (22) engaged therewith in a corresponding direction. In the event that the apparatus (20) includes greater than one drive roller (134), the motor (60) may be used to concurrently drive each of the drive rollers (134).
Further, the motor (60) may be comprised of a plurality of motors acting together in a coordinated manner to provide the reciprocating drive. For instance, where the apparatus (20) includes only one drive roller (134), as in the preferred embodiment, the drive roller may be operatively connected with two motors wherein a first motor rotates the drive roller (134) in one direction, while a second motor rotates the drive roller (134) in an opposed direction. Where the apparatus (20) includes greater than one drive roller (134), each drive roller may be operatively connected with one or more motors. For instance, one or more drive rollers (134) may be operatively connected with one or more first motors to rotate the drive rollers (134) in one direction, while one or more drive rollers (134) may be operatively connected with one or more second motors to rotate the drive rollers (134) in an opposed direction.
Alternately, each of the drive rollers (134) may be operatively connected with one or more motors capable of rotating the drive rollers (134) in either direction as desired to reciprocate the injecting conduit (22).
As indicated, in the preferred embodiment, in order to decrease or minimize both the weight of the apparatus (20) and the length of the apparatus (20), the apparatus (20) is comprised of a single motor (60) for reciprocably driving a single drive roller (134). Thus, the motor (60) is preferably a reversible motor capable of driving the drive roller (134) in either desired direction in order to reciprocate the injecting conduit (22) in the corresponding desired direction. In addition, the motor (60) is preferably a hydraulic motor. In particular, the hydraulic motor (60) is connected with a source of hydraulic fluid through one or more hydraulic fluid lines (154) permitting a flow of the hydraulic fluid through the motor (60).
Preferably, the direction of rotation of the drive roller (134) is reversed by simply reversing the direction of flow of the hydraulic fluid through the motor (60). Thus, the motor (60) may be comprised of any conventional reversible, hydraulic motor suitable for use in this manner and compatible with the apparatus (20).
Operation or actuation of the motor (60), and thus the operation of the apparatus (20), may be controlled by any mechanism capable of controlling the hydraulic fluid flow.
Preferably, the apparatus (20) is further comprised of a remote motor control device (156) associated with the motor (60) and capable of remotely controlling the hydraulic fluid flow therethrough a selected distance therefrom.. The remote motor control device (156) permits the operator of the apparatus (20) to control the motor (60) at a selected or desired distance from the apparatus (20).

The remote motor control device (156) may be associated with either the pressure truck (44) or the vacuum truck or sand transport vehicle (48). However, in this case, the remote motor control device (156) is preferably associated with the pressure truck (44) which also preferably provides the hydraulic fluid for the hydraulic lines (154) supplying the motor (60).
Thus, an electrical cable or line of a desired length preferably extends from the remote motor control device ( 156) to the pressure truck (44) to control the flow of hydraulic fluid through the hydraulic lines (156) to the motor (60), thus remotely controlling the actuation of the motor (60).
However, preferably, as shown in Figure 6, the remote motor control device (156) is electrically connected directly with the motor (60), by an electrical cable or line (158) of a desired length, to control the flow of hydraulic fluid through the motor (60) from the hydraulic lines (156).
Thus, the operator may control or monitor other instruments or equipment during the cleaning operation, while concurrently actuating and controlling the apparatus (20).
Further, the remote motor control device (156) preferably includes a toggle switch (160) permitting the operator to manually actuate a reversal of the hydraulic fluid flow in order to reciprocate or move the injecting conduit (22) in a desired direction. As well, the toggle switch (160) preferably allows the operator to control the rate of the fluid flow through the motor (60) in order to control the speed of, or power generated by, the motor (60).
Accordingly, the resulting rotations per minute (RPM) of the drive roller (134) may be varied to control the speed of movement of the injecting conduit (22).
In the preferred embodiment, the drive mechanism (SO) of the apparatus (20) is configured to permit the injecting conduit (22) to be reciprocably moved in a desired direction at a relatively greater rate or speed than conventional apparatuses. 1n particular, the preferred embodiment of the apparatus (20) preferably allows for the injecting conduit (22) to be moved in a desired direction at a speed of up to 5 feet/second (1.524 meters/second).
Further, the preferred embodiment of the apparatus (20) preferably allows for the application of a directional force of up to 1000 pounds (453.6 kg).
In addition, as indicated, the apparatus (20) is also comprised of an apparatus connector (52) adapted to connect the apparatus (20) with the storage tank (24) such that the storage tank outlet (26) is aligned with the roller driving plane (56) in order to facilitate the reciprocation of the injecting conduit (22) in the roller driving plane (56) by the drive mechanism (50). Preferably, the apparatus connector (52) is associated with the first roller assembly frame (62) and the second roller assembly frame (64) adjacent the respective second ends (88, 92) thereof.
Refernng to Figures 1 - 6 and 11, the apparatus connector (52) may connect the apparatus (20) with the storage tank (24), and in particular the storage tank outlet (26), either directly or indirectly. In the preferred embodiment, the storage tank outlet (26) is comprised of a conventional valve mechanism or valve device which permits the selective passage of fluid and equipment therethrough such that the interior of the storage tank (24) may be accessed. Further, in the preferred embodiment, the apparatus connector (52) connects the apparatus (20) indirectly with the valve mechanism comprising the storage tank outlet (26) through an intermediate or intervening structure or adapter component. The intervening structure or adapter component provides for communication between the apparatus (20) and the storage tank (24) such that the injecting conduit (22) is permitted to pass therethrough. In the preferred embodiment, the intervening structure or adapter component is comprised of an adapter conduit (162), which may be referred to as a "barrel," and the apparatus (20) is further comprised of the adapter conduit (162) for connection between the storage tank outlet (26) and the apparatus connector (52).
The adapter conduit ( 162) is comprised of a tubular member or generally cylindrical structure having a first end (164) for engagement with the apparatus connector (52) and an opposed second end ( 166) for engagement with the storage tank outlet (26).
Further, the adapter conduit (162) defines a primary adapter bore (168) extending through the adapter conduit (162) between the first and second ends (164, 166) and which is aligned with the roller driving plane (56) when the apparatus (20) is connected with the storage tank (24) to permit or provide for the reciprocation of the injecting conduit (22) in the roller driving plane (56).
In the preferred embodiment, the adapter conduit (162) is sealingly engaged or connected with the storage tank outlet (26) at the second end (166) and with the apparatus connector (52) at the first end ( 164) in order to inhibit or prevent any undesirable leakage or accidental spillage of fluids during the use of the apparatus (20). Thus, in the preferred embodiment, the second end (166) of the adapter conduit (162) is comprised of a sealed connector (170) for sealingly engaging or connecting with a compatible structure comprising the storage tank outlet (26). In particular, the sealed connector (170) is preferably a threaded connector to provide a sealed, threaded connection with the storage tank outlet (26).
S
Further, where the slurry is removed from the storage tank (24) through the storage tank outlet (26), the adapter conduit ( 162) preferably further defines a branch adapter bore ( 172) for facilitating removal of the slurry. In particular, the branch adapter bore (172) extends from the primary adapter bore (168) to a branch end (174) for connection with the second hose (46). Thus, the slurry may be communicated or conducted from the storage tank outlet (26) and into the adapter conduit (162) within the primary adapter bore (168). The slurry may then be communicated or conducted from the primary adapter bore ( 168) into the branch adapter bore ( 172), out of the branch end ( 174) and into the second hose (46) for transport to the vacuum truck or sand transport vehicle (48). Thus, the slurry may be removed from the storage tank (24) during the reciprocation of the injecting conduit (22) within the storage tank (24).
Further, in the preferred embodiment, the apparatus connector (52) is comprised of a mounting plate ( 176) for mounting or connection with the first and second roller assembly frames (62, 64), as described further below. In addition, the apparatus connector (52) is comprised of a tubular member ( 175) affixed with, and extending through, the mounting plate ( 176). The tubular member (175) defines a bore (177) therethrough, between opposed ends (178, 179) thereof, to permit the passage of the injecting conduit (22) through the apparatus connector (52), and particularly the mounting plate (176). Accordingly, the first end (38) of the injecting conduit (22) may extend away from the engagement by the drive mechanism (50) and out of the apparatus (20) through the tubular member (175). The tubular member (175) may be removably or fixedly attached, mounted or formed with the mounting plate ( 176) in any manner. For instance, the tubular member (175) may be integrally formed with the mounting plate (176) or fixedly connected therewith, such as by welding. Further, the dimensions or configuration of the tubular member (175), particularly on cross-section, are compatible for connection with the adapter conduit (162) and to permit the injecting conduit (22) to reciprocate therein.
Finally, when the mounting plate (176) is connected in position with the first and second roller assembly frames (62, 64), an inside end (178) of the tubular member (175) extends from the mounting plate (176) within or between the first and second roller assembly frames (62, 64), while an outside end (179) extends from the mounting plate ( 176) away from the first and second roller assembly frames (62, 64) for connection or engagement with the adapter conduit (162).
Further, in the preferred embodiment, the outside end ( 179) of the tubular member (175) is comprised of or associated with a sealing connector (180).
Preferably, the sealing connector (180) is either fixedly or removably fastened, mounted or otherwise associated with the outside end (179) about the bore (177) and is adapted to sealingly engage or connect the outside end (179) of the tubular member (175) with the first end (164) of the adapter conduit (162) in order to inhibit or prevent any undesirable leakage or accidental spillage of fluids out of the adapter conduit (162) through the primary adapter bore (168). Thus, the sealing connector (180) may be comprised of any type or configuration of mechanism or structure capable of and suitable for sealingly engaging the outside end (179) of the tubular member (175) with the first end (164) of the adapter conduit (162). In the preferred embodiment, the sealing connector (180) is comprised of a conventional threaded packing nut (181) which engages against or with the outside end (179) of the tubular member (175), as well as engages with a compatible threaded structure comprising the first end (164) of the adapter conduit (162). Thus, the packing nut (180) provides a sealed, threaded connection between the tubular member (175) and the adapter conduit (162).
In addition, the inside end (178) of the tubular member (175) is comprised of a packing gland or seal (182). Preferably, the packing gland or seal (182) is either fixedly or removably fastened, mounted or otherwise associated with the inside end ( 178) about the bore (177) and is adapted to sealingly engage with the injecting conduit (22) extending through the tubular member (175) such that the injecting conduit (22) is capable of reciprocating through the apparatus connector (52) while inhibiting or preventing any undesirable leakage or accidental spillage of fluids from the annulus defined between the injecting conduit (22) and the tubular member (175). Thus, the packing gland or seal (182) may be comprised of any type or configuration of mechanism or structure capable of and suitable for sealingly engaging the injecting conduit (22) with the inside end (178) of the tubular member (175).
In the preferred embodiment, the packing gland or seal (182) is comprised of a conventional packing gland including an outer tubular packing member (183) which engages against or with the inside end (178) of the tubular member (175), preferably by a threaded connection therebetween, such that the outer packing member (183) may be moved relative to the inside end (178). Further, the packing gland (182) is comprised of a compressible, tubular inner packing member (184) or seal which is contained within the outer packing member (183) adjacent the inside end (178) of the tubular member (175) and which permits the injecting conduit (22) to extend therethrough. As a result, movement of the outer packing member (183) towards the inside end (178), or threading of the outer packing member (183) thereon, causes the inner packing member (183) to be compressed and thereby engaged against the injecting conduit (22) extending therethrough.
Thus, the inner packing member (183) sealingly engages with the injecting conduit (22). More particularly, in the preferred embodiment, a connector annulus (185) is defined between the tubular member (175) and the injecting conduit (22) when the injecting conduit (22) is extended therethrough. The inner packing member (183) is adapted to seal the connector annulus (185). In the event any undesirable leakage is observed from the connector annulus (185) by the operator of the apparatus (20), the outer packing member (183) may be tightened or further threaded onto the inside end (178) of the tubular member (175) in order to enhance or facilitate the sealing of the connector annulus (185) by the inner packing member (184).
As indicated, the mounting plate (176) is preferably mounted, connected or otherwise associated with the first and second roller assembly frames (62, 64). Preferably, the mounting plate (176) extends between and is connected with each of the first and second roller assembly frames (62, 64). Preferably, the mounting plate (176) has a first end (186) for connection with the first roller assembly frame (62) and a second end (188) for connection with the second roller assembly frame {64). Further, in the preferred embodiment, the first end (186) includes a suitable handle member (189) adapted for handling, gripping or moving the mounting plate (176) or for handling, gripping or moving the apparatus (20) when the mounting plate (176) is connected with one or both of the roller assembly frames (62, 64).
Any type or configuration of connector or fastening mechanism may be provided between the first and second ends (186, 188) and the first and second roller assembly frames (62, 64) respectively. Further, the connection may be fixed, such as by welding.
However, in order to permit the pivoting of the first and second roller assembly frames (62, 64) relative to each other, and in order to facilitate access to the components of the apparatus (20), at least one of the connections is releasable. In the preferred embodiment, a releasable connector or fastening mechanism is provided between each of the first and second ends (186, 188) and the first and second roller assembly frames (62, 64) respectively.
In the preferred embodiment, the first end (186) of the mounting plate (176) is comprised of a tubular member or sleeve defining a bore (190) therethrough.
Similarly, the second end (188) of the mounting plate (176) is comprised of tubular member or sleeve defining a bore (192) therethrough. A compatible removable mounting plate fastener (194) is receivable within each of the bores ( 190, 192). Further, each of the opposed first frame members (66) defines a corresponding aperture (196) therein such that the bore (190) at the first end (186) of the mounting plate (176) may be aligned with the corresponding apertures (196) when the first end (186) of the mounting plate (176) is placed in position between the first frame members (66). One mounting plate fastener (194) may then be extended through the apertures (196) and the bore (190) of the first end (186) in order to connect or mount the first end (186) of the mounting plate (176) in the desired position. Similarly, each of the opposed second frame members (68) defines a corresponding aperture ( 198) therein such that the bore ( 192) at the second end ( 188) of the mounting plate (176) may be aligned with the corresponding apertures (198) when the second end (188) of the mounting plate (176) is placed in position between the second frame members (68). A
further mounting plate fastener (194) may then be extended through the apertures (198) and the bore (192) of the second end (188) in order to connect or mount the second end (188) of the mounting plate (176) in the desired position.
Each of the apertures (196, 198) is configured or shaped to permit some movement of the first and second roller assembly frames (62, 64) relative to each other when the mounting plate ( 176) is fastened in position by the mounting plate fasteners ( 194).
This relative movement is necessary in order to permit the proper functioning of the roller clamping mechanism (110).
Specifically, as the tension nut (116) is threaded onto the tension bolt (112), the tension nut (116) acts against the clamping plate (128) in order to move the clamping plate (128) to act against the first frame members (66) and thereby adjust the conduit gap (108) between the first and second roller assembly frames (62, 64). When the mounting plate (176) is fastened in position between the first and second roller assembly frames (62, 64), the shape or configuration of the apertures (196, 198) in at least one of the first and second frame members (66, 68) must permit the movement between the first and second roller assembly frames (62, 64). In the preferred embodiment, at least the apertures (196) in the first frame members (66) are oblong or elongated or are of a sufficient size to permit the first frame members (66) to be moved by the roller clamping mechanism (110) to provide the desired conduit gap (108) when the mounting plate (176) is fastened in position between the first and second frame members (66, 68).
Each mounting plate fastener (194) may be comprised of any compatible bolt, screw or fastening structure able to be received within and passed through the respective apertures (196, 198) and bores ( 190, 192) and capable of being fastened, tightened or otherwise held or maintained in position. Further, the fastener (194) is preferably releasably or removably fastened or maintained in position such the mounting plate (176) may be disengaged or released from the first and second frame members (66, 68). In the preferred embodiment, the fastener (194) is comprised of a fiu~ther removable assembly pin (100), as described previously above and as shown in Figure 13.
Thus, one assembly pin (100) is extended through the corresponding apertures (196) of the first frame members (66) and bore (190) of the first end (186) of the mounting plate (176) such that the opposed handle ( 102) and hole ( 104) at the ends of the assembly pin ( 100) extend away from the apertures (196). A further assembly pin (100) is extended through the corresponding apertures ( 198) of the second frame members (68) and bore ( 192) of the second end (188) of the mounting plate (176) such that the opposed handle (102) and hole (104) at the ends of the further assembly pin (100) extend away from the apertures (198). In each instance, a quick ZS release pin (106) is then passed through the hole (104) such that the end of the assembly pin (100) including the hole (104) may not be withdrawn through the adjacent aperture (196, 198). To release the mounting plate ( 176) at either end, the quick release pin ( 106) is removed from the hole (104), the handle (102) is gripped and the assembly pin (100) is withdrawn.
In addition, the apparatus (20) is preferably further comprised of a stabilizing support (200) for enabling the apparatus (20) to engage a ground surface. In particular, when the apparatus connector (52) is connected with the storage tank (24), the stabilizing support (200) engages the ground surface to steady, or to more firmly or securely hold, the apparatus (20) during the use thereof. Preferably, the apparatus connector (52) is positioned at the second ends (88, 92) of the first and second roller assembly frames (62, 64), while the stabilizing support (200) is preferably located at, adjacent or in proximity to the first ends (86, 90) of the first and second roller assembly frames (62, 64). Although the stabilizing support (200) may be fastened, mounted or associated with either or both of the first and second roller assembly frames (62, 64), in the preferred embodiment, the stabilizing support (200) is mounted with the second roller assembly frame (64).
More particularly, the stabilizing support (200) is comprised of a stabilizer mount (202) connected or fastened with the second roller assembly frame (64) and an adjustable stabilizer leg (204) movably or adjustably engaged or fastened with the stabilizer support (202). The stabilizer mount (202) and adjustable stabilizer leg (204) permit the apparatus (20) to be supported at varying heights relative to the ground surface depending upon the location of the storage tank outlet (26) on the storage tank (24). In other words, the stabilizer mount (202) and adjustable stabilizer leg (204) provide an adjustable support height which permits the apparatus (20) to be adapted for use with varying locations of the storage tank outlet (26).
The stabilizer mount (202) may be connected or fastened with any component or element of the second roller assembly frame (64) adjacent the first end (90) thereof. However, preferably, the stabilizer mount (202) is connected or fastened with one of the opposed second frame members (68) on an outer surface thereof in order to facilitate access to the stabilizer mount (202). Further, the stabilizer mount (202) may be releasably or fixedly mounted or fastened with the second frame member (68) in any manner, preferably by welding. Finally, the stabilizer mount (202) may be comprised of any structure or mechanism compatible with the stabilizer leg (204) and permitting the stabilizer leg (204) to be moved or adjusted relative to the stabilizer support (202) as required to adjust the support height of the stabilizing support (200). Preferably, the stabilizer support (202) is comprised of a tubular member adapted or configured to be compatible with the stabilizer leg (204), and more preferably, defines a bore (206) therethrough for receipt and passage of the stabilizer leg (204) therein.

The stabilizer leg (204) is therefore preferably slidable within the bore (206) of the stabilizer mount (202) such that the support height may be adjusted. Once at a desired support height, the stabilizer leg (204) is preferably releasably fastened with the stabilizer mount (202) to permit any further movement of the stabilizer leg (204) within the bore (206).
Any releasable fastening mechanism may be used. However, in the preferred embodiment, the stabilizer leg (204) includes a lower end (208) adapted for engaging the ground surface and an opposed upper end (212) adapted for releasably engaging the stabilizer mount (202). The length of the stabilizer leg (204) defined between the upper and lower ends (212, 208) will be selected to be compatible with a desired range of approximate anticipated or likely support heights of the apparatus (20).
The lower end (208) of the stabilizer leg (204) is preferably comprised of a support plate (210) for enhancing or facilitating the contact with the ground to enhance the functioning of the stabilizing support (200) during use of the apparatus (200). The upper end (212) of the stabilizer leg (204) preferably defines a plurality of slots or orifices (214) therethrough spaced apart along the length of the upper end (212). Similarly, the support mount (202) defines at least one slot or orifice (216) therethrough which is compatible with the orifices (214) in the stabilizer leg (204) such that a selected orifice (214) in the stabilizer leg (204) may be aligned with the orifice (216) in the stabilizer mount (202). The particular orifice (214) in the stabilizer leg (204) selected to be aligned with the orifice (216) in the stabilizer mount (202) will depend upon the desired support height of the stabilizing support (200). Once the desired orifices (214, 216) are aligned, a removable pin (218) or other removable fastener may be passed through the orifices (214, 216) in order to prevent any further movement of the stabilizer leg (204) within the bore (206) of the stabilizer mount (202). Thus, once the apparatus (20) is connected with the storage tank (24), the stabilizing support (200) may be adjusted to a desired support height such that the ground surface is engaged thereby.
Finally, as shown in Figures 6 and 14, the second end (40) of the injecting conduit (22) is preferably supported during the reciprocation of the injecting conduit (22) in order to facilitate or enhance the operation of the apparatus (20). In the preferred embodiment, the apparatus (20) is further comprised of a reciprocable carriage (220) adapted for supporting the injecting conduit (22), preferably at, adjacent or proximate to the second end (40) thereof. Further, the carriage (222) preferably has an adjustable carriage height such that the second end (40) of the injecting conduit (22) may be supported at a desired height from the ground surface during reciprocation of the injecting conduit (22) by the drive mechanism (50). The desired height will be compatible with and dependent upon the location and orientation of the storage tank outlet (26) on the storage tank (24). Further, the carriage height will be adjusted in the preferred embodiment to S hold the second end (40) of the injecting conduit (22) at a height compatible with reciprocation of the injecting conduit (22) in the desired roller driving plane (56).
Thus, once the apparatus (20) is connected with the storage tank (24) and the first end (38) of the injecting conduit (22) is inserted within the storage tank (24), the carnage (220) may be adjusted to a desired carnage height to support the second end (40) of the injecting conduit (22) at a height compatible with the reciprocation of the injecting conduit (22) in the roller driving plane (56). Accordingly, in the preferred embodiment, the support height of the adjustable carnage (220) will be compatible with and dependent, at least in part, upon the support height of the apparatus (20) as provided by the stabilizing support (200).
The carriage (220) is preferably reciprocable relative to the drive mechanism (50) of the apparatus (20) so that the second end (40) is maintained at the desired height during the reciprocation of the injecting conduit (22). Thus, in the preferred embodiment, the carriage (220) is comprised of a cart (222) including a cart mount (224) for supporting the second end (40) of the injecting conduit (22) and at least two wheels for engaging the ground surface to permit the reciprocation of the cart (222). The cart mount (224) preferably supports the second end (40) and provides a location of connection with the first hose (42) from the pressure truck (44). As a result, the stresses placed upon the connection between the injecting conduit (22) and the first hose (42) may be reduced. Further, the carnage height, as described above, is preferably adjusted by adjusting the height of the cart mount (224) relative to the ground surface.
In the preferred embodiment, the cart mount (224) is adjustably or releasably mounted with an elongate cart member (228) extending from the wheels (226) to a handle (230) for manual movement of the cart (222) when required. More particularly, the cart mount (224) is releasably fastened or mounted at an adjustable position along the length of the elongate cart member (228). Thus, to adjust the carnage height, the cart mount (224) may be released from its position on the cart member (228) and moved along the length thereof to an alternate desired position. Once in the alternate desired position, the cart mount (228) is re-fastened or mounted with the cart member (228). Any releasable fastening mechanism may be utilized, such as a corresponding slot and pin structure as provide for the stabilizing support (200), a clamping member or other releasable gripping structure. Alternately, the cart mount (228) may be fixed in position on the elongate cart member (228) and the structure of the cart (222) may provide for the adjustment of the position at which the cart mount (228) is held relative to the ground surface.
In the preferred embodiment, referring to Figure 6, the elongate cart member (228) defines a plurality of slots or orifices (232) therethrough spaced apart along the length of the elongate cart member (228). Similarly, the cart mount (224) defines at least one slot or orifice (234) therethrough which is compatible with the orifices (232) in the elongate cart member (228) such that a selected orifice (232) in the elongate cart member (228) may be aligned with the orifice (234) in the cart mount (224). The particular orifice (232) in the elongate cart member (228) selected to be aligned with the orifice (234) in the cart mount (224) will depend upon the desired support height of the carnage (220). Once the desired orifices (232, 234) are aligned, a removable pin (236) or other removable fastener may be passed through the orifices (232, 234) in order to prevent any further movement of the cart mount (224) along the elongate cart member (228).
Thus, once the apparatus (20) is connected with the storage tank (24), the carriage (220) may be adjusted to a desired support height.

Claims

1. An apparatus for reciprocating an injecting conduit within a storage tank through a storage tank outlet located on the storage tank, the apparatus comprising:

(a) a drive mechanism adapted to engage the injecting conduit in order to reciprocate the injecting conduit, the drive mechanism comprising a first roller assembly disposed in a roller driving plane and an opposing second roller assembly disposed in the roller driving plane, wherein at least one of the first roller assembly and the second roller assembly is adapted to be driven by a motor, wherein the first roller assembly and the second roller assembly are adapted to engage the injecting conduit between the first roller assembly and the second roller assembly in order to reciprocate the injecting conduit in the roller driving plane and wherein the first roller assembly and the second roller assembly are pivotably connected with each other; and (b) an apparatus connector adapted to connect the apparatus with the storage tank such that the storage tank outlet is aligned with the roller driving plane.

2. The apparatus as claimed in claim 1 wherein a connector annulus is defined between the apparatus connector and the injecting conduit when the injecting conduit is reciprocating within the storage tank, further comprising a packing seal which is adapted to seal the connector annulus.

3. The apparatus as claimed in claim 1 or 2 wherein the first roller assembly and the second roller assembly define an adjustable conduit gap between them for accommodating the injecting conduit.

4. The apparatus as claimed in claim 3, further comprising a roller clamping mechanism for adjusting the conduit gap.

5. The apparatus as claimed in claim 4 wherein the roller clamping mechanism is comprised of a tension bolt associated with one of the first roller assembly and the second roller assembly, a clamping surface associated with the other of the first roller assembly and the second roller assembly, and a tension nut for threading on the tension bolt against the clamping surface in order to adjust the conduit gap.

6. The apparatus as claimed in claim 5 wherein the clamping surface is comprised of a clamping plate.

7. The apparatus as claimed in any one of claims 1 to 6 wherein the first roller assembly is comprised of a first roller assembly frame and wherein the second roller assembly is comprised of a second roller assembly frame.

8. The apparatus as claimed in claim 7 wherein the first roller assembly is further comprised of at least one first roller rotationally supported by the first roller assembly frame and wherein the second roller assembly is further comprised of at least one second roller rotationally supported by the second roller assembly frame.

9. The apparatus as claimed in claim 7 wherein the first roller assembly frame is comprised of a pair of opposing first frame members and wherein the second roller assembly frame is comprised of a pair of opposing second frame members.

10. The apparatus as claimed in claim 9 wherein the first roller assembly is further comprised of at least one drive roller rotationally supported between the first frame members and wherein the second roller assembly is further comprised of at least one idler roller rotationally supported between the second frame members.

11. The apparatus as claimed in claim 9 wherein the first roller assembly is comprised of one drive roller and wherein the second roller assembly is comprised of at least two idler rollers.

12. The apparatus as claimed in any one of claims 1 to 9 wherein the first roller assembly is comprised of at least one drive roller.

13. The apparatus as claimed in any one of claims 1 to 9 wherein the second roller assembly is comprised of at least one idler roller.

14. The apparatus as claimed in claim 13 wherein the first roller assembly is comprised of at least one drive roller.

15. The apparatus as claimed in claim 13 or 14 wherein the second roller assembly is comprised of at least two idler rollers.

16. The apparatus as claimed in any one of claims 1 to 15, further comprising a motor, wherein the motor is configured to reciprocably drive at least one of the first roller assembly and the second roller assembly.

17. The apparatus as claimed in claim 16 wherein the motor is a reversible motor.

18. The apparatus as claimed in claim 16 wherein the motor is a hydraulic motor.

19. The apparatus as claimed in claim 18 wherein the motor is a reversible motor.

20. The apparatus as claimed in claim 16, 17, 18 or 19, further comprising a remote motor control device for remotely controlling the motor.

21. The apparatus as claimed in any one of claims 1 to 20, further comprising a stabilizing support for enabling the apparatus to engage a ground surface.

22. The apparatus as claimed in claim 21 wherein the stabilizing support has an adjustable support height.

23. The apparatus as claimed in any one of claims 1 to 22, further comprising a carriage adapted for supporting the injecting conduit, wherein the carriage is reciprocable relative to the drive mechanism as the injecting conduit reciprocates.

24. The apparatus as claimed in claim 23 wherein the carriage has an adjustable carriage height.

25. The apparatus as claimed in claim 24 wherein the carriage is comprised of wheels for engaging a ground surface.

26. The apparatus as claimed in any one of claims 1 to 25, further comprising an adapter conduit for connection between the storage tank outlet and the apparatus connector, wherein the adapter conduit defines a primary adapter bore extending through the adapter conduit.

27. The apparatus as claimed in claim 26 wherein the primary adapter bore is adapted to be aligned with the roller driving plane when the injecting conduit is reciprocating within the storage tank.

28. The apparatus as claimed in claim 27 wherein the adapter conduit further defines a branch adapter bore for facilitating removal of a material from the storage tank when the injecting conduit is reciprocating within the storage tank.