CN114893136A

CN114893136A - Roller device of coiled tubing without rewinding and operation method

Info

Publication number: CN114893136A
Application number: CN202210491852.XA
Authority: CN
Inventors: 陈付坤; 宋亮; 田国徽; 刘传滨; 陈春雷; 侯玉文; 杨帅; 刘冀祥
Original assignee: Huaxin Tangshan Petroleum Equipment Co ltd
Current assignee: Huaxin Tangshan Petroleum Equipment Co ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-08-12

Abstract

The invention relates to a roller device of a coiled tubing without a tubing pipe and an operation method, belonging to the technical field of petroleum machinery. The technical scheme is as follows: the fixed end speed reducer assembly, the fixed end chain transmission assembly, the fixed end bearing block assembly, the moving end speed reducer assembly and the moving end chain transmission assembly are respectively arranged on the base fixing support and the moving support in a pairwise opposite arrangement, and the conveying roller is driven to rotate after being loaded and locked; the base assembly is provided with a hydraulic lifting calandria arm support assembly, the calandria device is arranged on the hydraulic lifting calandria arm support assembly and is connected with the continuous oil pipe channel through a rotary joint and a high-pressure manifold, and various well access operations can be carried out by matching with the injection head. According to the invention, the working roller is replaced by the transportation roller wound with the coiled tubing, the injection head is matched to directly carry out well entering and exiting operation, the operation of pipe reversing is not required, the operation stability and safety are better, the operation is more convenient and faster, and the efficiency is high.

Description

Roller device of coiled tubing without rewinding and operation method

Technical Field

The invention relates to a roller device of a coiled tubing without a tubing pipe and an operation method, belonging to the technical field of petroleum machinery.

Background

In recent years, with the rapid development of coiled tubing operation technology, various coiled tubing with large pipe diameter, high strength and super-long length continuously appears, and the overall dimension and the weight of a transportation roller bearing the coiled tubing with large pipe diameter and super-long length are continuously increased. The pipe-reversing device which is used as a bearing and driving transportation roller and realizes the bidirectional pipe-reversing operation of the continuous pipe between the transportation roller and an oil pipe working roller (hereinafter referred to as a working roller) has higher requirements on the aspects of bearing and driving capability, adaptability to the transportation roller, operation stability, safety and the like. The invention relates to a heavy-load coiled tubing inverter and a tubing inverting method thereof, and a patent No. 202010650358.4, which belong to Chinese invention patents of the applicant of the patent, wherein a hydraulic system on a coiled tubing machine is used as a power source, a speed reducer and a chain transmission are driven by a hydraulic motor to drive a transport roller to rotate, support shafts at two ends are used for supporting the transport roller, the axial distance between the two support shafts is adjusted by the telescopic operation of a hydraulic oil cylinder so as to load the transport rollers with different widths, and the hydraulic oil cylinder is properly withdrawn to clamp the transport roller after the loading, so that the cost can be saved. However, the above patents of the applicant have the following problems and disadvantages:

1) the pipe-reversing operation is still required, the working efficiency is low, the working cost is high, and the working condition and the safety are poor;

2) the base adopts a rectangular frame type structure, the size in the length direction (the short side or the diameter direction of the transport roller) is smaller, and no auxiliary support or expandable support device is arranged on the periphery, so that the transport roller with larger size and weight is light in overall weight, poor in operation stability and safety, and limited in equipment bearing capacity;

3) four groups of guider rollers in the guider assembly are of a semicircular structure, the shape and the size of a guide groove of the guider assembly are matched with the diameter of the coiled tubing, the corresponding guider rollers are required to be completely replaced for the coiled tubing with different diameters, the workload is large, and labor are wasted;

4) the pipe arranging arm adopts an inner and outer sleeve type structure, the height of the pipe arranging arm is adjusted by adjusting the insertion amount of the inner and outer sleeves, and the pipe arranging arm is fixed by a pin shaft, so that the structure is inconvenient to adjust, and the pipe arranging arm cannot be adjusted at any time according to continuous oil pipes with different layer heights in the operation process;

5) the equipment can only be used as a special device for bidirectional pipe reversing between the transport roller and the working roller, and cannot be used as the working roller together with the transport roller, the high-pressure rotary joint, the high-pressure manifold and the like;

6) the equipment is only provided with the hydraulic motor, the speed reducer and the chain transmission driving device on one side of the base fixing support, the power performance of the equipment cannot meet the requirements for the coiled tubing with large pipe diameter, large length and high strength, and the power output by the speed reducer cannot be realized by increasing under the condition of limited installation space.

Disclosure of Invention

The invention aims to provide a roller device without a coiled tubing and an operation method, wherein a transport roller wound with the coiled tubing is used for replacing a working roller, an injection head is matched for directly carrying out well entering and exiting operation without the need of tubing inversion, the operation stability and safety are better, the bearing capacity and the power performance are stronger, the operation is more convenient and faster, the efficiency is high, and the problems in the background technology are solved.

The technical scheme of the invention is as follows:

a coiled tubing does not need the cylinder device of the back-off, including: the hydraulic lifting pipe-arranging arm support assembly comprises a base assembly, a fixed end speed reducer assembly, a fixed end chain transmission assembly, a fixed end bearing seat assembly, a hydraulic lifting pipe-arranging arm support assembly, a guider assembly, a counter assembly, a pipe-arranging device, a moving end bearing seat assembly, a rotary joint, a high-pressure manifold, a moving end chain transmission assembly, a moving end speed reducer assembly, a hydraulic operating platform and a conveying roller; the base assembly comprises a fixed bracket and a movable bracket which are oppositely arranged; the fixed end speed reducer assembly, the fixed end chain transmission assembly, the fixed end bearing block assembly, the moving end speed reducer assembly and the moving end chain transmission assembly are respectively arranged on the base fixed support and the moving support and are arranged in a pairwise opposite mode, and after the conveying roller is installed and locked, the conveying roller is driven to rotate; the base assembly is provided with a hydraulic lifting calandria arm support assembly, the calandria device is arranged on the hydraulic lifting calandria arm support assembly and is connected with the continuous oil pipe channel through a rotary joint and a high-pressure manifold, and various well access operations can be carried out by matching with the injection head.

The bottom of the fixed bracket is provided with two parallel cylindrical guide rails and a middle dovetail-shaped slideway; the movable support is provided with three support legs, the bottoms of the two support legs on the outer side are provided with two parallel round pipes which are respectively sleeved on the two parallel cylindrical guide rails of the fixed support, the bottom of one support leg in the middle is provided with a sliding plate which is embedded in a middle dovetail type slide way, and the movable support can move left and right along the two parallel cylindrical guide rails and the middle dovetail type slide way; a set of width adjusting oil cylinders are correspondingly arranged on each of the two parallel cylindrical guide rails, one end of each width adjusting oil cylinder is installed on the fixed support, the other end of each width adjusting oil cylinder is fixed on the circular tube of the movable support, the axial distance between the fixed support and the movable support is adjusted through the width adjusting oil cylinders, and conveying rollers with different widths are installed between the fixed support and the movable support; two rows of bolt holes are formed in the middle dovetail type slide way in the length direction, two rows of long holes are formed in the sliding plate and matched with the two rows of bolt holes, the multiple relation hole pitch between the bolt holes and the long holes ensures that at least four groups of bolt holes correspond to each other when the sliding plate is at any position, the movable support is fixed, and the transportation roller is locked.

In order to ensure that the width-adjustable conveying roller is suitable for a conveying roller with a large width range, an oil cylinder seat is arranged on a base fixing support, four groups of U-shaped grooves are formed in an oil cylinder support of the oil cylinder seat to form four working positions, a pin seat of the oil cylinder seat is connected with a width-adjustable oil cylinder through a pin shaft and is supported in the U-shaped grooves of the oil cylinder support, the working positions of the oil cylinders can be changed for the conveying rollers with different widths, so that the stroke of the oil cylinders is shortened, and the stress is improved.

The base assembly four corners respectively is equipped with one set of self-adaptation hydraulic pressure landing leg assembly, including the self-adaptation hydro-cylinder, the landing leg, the round pin axle, otic placode seat and bracing piece, the one end of self-adaptation hydro-cylinder and landing leg is all installed on the base assembly through respective otic placode seat and round pin axle, the other end of self-adaptation hydro-cylinder is connected with the landing leg through the round pin axle, the bracing piece is installed to the landing leg other end, the bracing piece passes through threaded connection on the landing leg, bracing piece height-adjustable festival, the bracing piece has ball-hinge backup pad with ground contact one end, can adapt to and reliably support subaerial at the unevenness, with the stability of assurance equipment operation, and guarantee through hydraulic system that each strong point has equal holding power.

The base assembly is provided with four lifting lugs, is provided with a steel wire rope lifting appliance and a shackle and is used for integral lifting during equipment transportation.

The top of the fixed bolster of base assembly and removal support is equipped with stiff end bearing frame assembly and removal end bearing frame assembly respectively, all contains two heavy-duty bearings in stiff end bearing frame assembly and the removal end bearing frame assembly, and two heavy-duty bearings in stiff end bearing frame assembly and the removal end bearing frame assembly are installed respectively on stiff end back shaft and removal end back shaft, stiff end back shaft and removal end back shaft mutual disposition.

The input of stiff end back shaft is used for installing stiff end chain drive assembly's driven sprocket, arranges the outside at base fixed bolster, installs transportation cylinder driving lever and adaptation axle sleeve on the output of stiff end back shaft, and the transportation cylinder driving lever is installed on the back shaft through square key, and the adaptation axle sleeve is used for transporting the axial fixity of cylinder driving lever and supporting the transportation cylinder with the back shaft together, towards the inboard of fixed bolster, with remove end back shaft (install transportation cylinder driving lever and adaptation axle sleeve) relative arrangement, and with the axle center. The transport roller shifting lever comprises two shifting pins, and the center distance of the two shifting pins can be adjusted to adapt to different types of transport rollers.

The moving end support shaft is of a hollow structure, two ends of the moving end support shaft are provided with connecting threads which are the same as the type of the high-pressure pipe fitting in the oil field, the tail end of the input end is used for installing a rotary joint and a high-pressure manifold, a driven chain wheel of the moving end chain transmission assembly is installed, and the driven chain wheel are both arranged on the outer side of the base moving support. The rotary joint and the high-pressure manifold comprise a high-pressure rotary joint, an external high-pressure manifold and an internal high-pressure manifold which are connected with the high-pressure rotary joint, and the high-pressure rotary joint and the external high-pressure manifold are supported on the base moving support through the mounting frame; remove output installation transportation cylinder driving lever and adaptation axle sleeve of end back shaft, the transportation cylinder driving lever is installed on the back shaft through square key, and the adaptation axle sleeve is used for transporting the axial fixity of cylinder driving lever, and towards the inboard that removes the support, the terminal screw thread of back shaft is used for connecting the interior high-pressure manifold of transportation cylinder to finally be linked together with coiled tubing's passageway.

The external high pressure manifold includes: the device comprises a 90-degree elbow I, a high-pressure straight pipe I, a plug valve I, a T-shaped tee I, a pressure sensor, a high-pressure flowmeter, a movable elbow I, a union plug and the like. The external high-pressure manifold is of a double-inlet structure and can be connected with external pumping equipment through two 90-degree bends I at the tail end, wherein one inlet needs to pass through a high-pressure flowmeter and is used for passing through a liquid medium with low viscosity and density, and the other inlet does not pass through the high-pressure flowmeter and is used for passing through a gas medium; the movable elbow I is used for connecting the high-pressure rotary joint and the movable end supporting shaft.

The inner high pressure manifold comprises: a 90-degree elbow II, a high-pressure straight pipe II, a plug valve II, a T-shaped tee joint II, a movable elbow II, a pressure relief needle valve and the like. The movable elbow II at one end is used for connecting the moving end supporting shaft, the movable elbow II has the functions of being conveniently connected with the moving end supporting shaft and absorbing a small amount of clearance and vibration between the transportation roller and the moving end supporting shaft, and the 90-degree elbow II at the other end is used for connecting the continuous oil pipe; the pressure relief needle valve is used for unloading.

The fixed end speed reducer assembly, the fixed end chain transmission assembly, the movable end speed reducer assembly and the movable end chain transmission assembly are respectively arranged on the base fixing support and the movable support in a pairwise opposite arrangement, output shafts of the fixed end speed reducer assembly, the fixed end chain transmission assembly and the movable end chain transmission assembly face the outer sides of the base fixing support and the movable support, driving chain wheels of the respective chain transmission assemblies are arranged on the output shafts, and brakes and hydraulic motors of the respective speed reducer input ends are arranged. The two groups of chain transmission assemblies respectively comprise a driving chain wheel, a driven chain wheel, a chain wheel shield and the like. After the transportation roller is loaded and locked, the hydraulic motors on the two sides drive the speed reducers, and the speed reducers on the two sides drive the transportation roller to rotate through the first-stage chain transmission (speed reduction and torque increase) and the transmission roller deflector rods on the two sides. The movable end supporting shaft is connected with the inner high-pressure manifold of the transportation roller together, and can be connected with the continuous oil pipe channel and matched with the injection head to carry out various well access operations.

In order to adapt to a large-size transportation roller and facilitate transportation of equipment, the hydraulic lifting calandria arm support assembly is designed into a hydraulic lifting structure. The lifting is realized through the built-in calandria arm lifting oil cylinder, the height of the calandria arm support can be adjusted according to the transport rollers with different outer diameters, so that the coiled tubing is ensured to have a proper retraction angle on the transport rollers, and the pipe dumping operation is facilitated. The lifting part mainly comprises a calandria arm lifting oil cylinder, outer sleeves, inner sleeve supports, extension rods, compression rods, pin shafts and the like, wherein the two groups of outer sleeves, the extension rods and the compression rods are fixed on the base assembly, the inner sleeve supports are correspondingly inserted into the two outer sleeves, and two ends of the calandria arm lifting oil cylinder are respectively connected to the outer sleeves and the inner sleeve supports through the pin shafts. During transportation, the height of the hydraulic lifting calandria arm support assembly is shortened to the minimum through the calandria arm lifting oil cylinder, the hydraulic lifting calandria arm support assembly is made to fall to one side of the fixed end bearing seat assembly and the movable end bearing seat assembly, two ends of the hydraulic lifting calandria arm support assembly are fixed through the lock pins, and the transportation size of the device can be reduced. The top of the hydraulic lifting calandria arm support is provided with a bidirectional screw rod, a calandria device, a guider assembly, a counter assembly and an oil pipe lubricator assembly, the calandria mode is forced calandria, and a calandria hydraulic motor drives the bidirectional screw rod to rotate through calandria chain transmission so as to drive the calandria device, the guider assembly and the counter assembly to move in the width direction of the transport roller to calandria.

The guider assembly comprises an upper shell, a hinge, a hasp, a conical roller component, an adjusting screw, a spacing sleeve, a retainer ring, a lower shell, a guide rod and the like; the upper shell and the lower shell form an opening and closing structure through respective hinges and hasps, the guide rod is connected with the lower shell through a pin shaft, the upper shell and the lower shell are respectively provided with two groups (four in total) of adjusting screw rods and conical roller components correspondingly, each adjusting screw rod is provided with two groups of conical roller components, and the conical surfaces of the conical rollers are arranged oppositely; the conical roller assembly comprises a conical roller, a bearing retainer ring and a support sleeve, wherein the bearing retainer ring is used for connecting and fixing the conical roller, the bearing and the support sleeve together; the adjusting screw rod both ends are the external screw thread that turns to the opposite, and the support cover of two sets of toper roller components on same adjusting screw rod is the internal screw thread that turns to the opposite, and two support covers on the adjusting screw rod suit is on last casing or lower casing, and the fitting surface is the non-cylinder face for the rotatory degree of freedom of restriction support cover, and support cover inserts in the downthehole of spacer sleeve simultaneously, and the adjusting screw rod both ends are fixed on the spacer sleeve of both sides through the retaining ring, and the spacer sleeve supports the both sides at last casing or lower casing. Therefore, the rhombic surfaces formed by the four conical surface rollers on the two corresponding adjusting screws between the upper shell and the lower shell can change the axial distance between the conical surface rollers by rotating the adjusting screws through the coiled tubing, so that the coiled tubing can adapt to coiled tubing with different outer diameters in a certain range.

The counter assembly is installed above the guider assembly, the counter assembly is connected to the guider assembly through a pin shaft, the length of a coiled tubing which is pulled out of or put into the coiled tubing is recorded through rolling of the counting roller on the coiled tubing, the counting roller is tightly pressed on the coiled tubing through the elastic force of a spring, and a mechanical counter and an electronic encoder are installed on the counter assembly.

The bottom of the base assembly fixing support is provided with one lubricating oil tank, and the lubricating oil tank is used for conveying lubricating oil to an oil pipe lubricator assembly at the top of the guider assembly through a pipeline in a mode of 'gas cap oil' when the oil pipe is discharged from a well and smearing the lubricating oil on the continuous oil pipe.

The hydraulic operation platform is provided with a manual reversing valve and a hydraulic hose bundle with a certain length and is used for controlling the actions of the width adjusting oil cylinder and the calandria hydraulic motor, so that an operator is far away from a high-pressure area and a hoisting danger area of the equipment. The hydraulic partition plate assembly and the electromagnetic reversing valve box are arranged on the outer side of the base assembly fixing support and used for being connected with a hydraulic power source of the continuous pipe operating machine, the electromagnetic reversing valve and the wireless receiver are installed in the electromagnetic reversing valve box and used for controlling the movement of the hydraulic motors of the pipe discharging pipes through the wireless remote transmission remote controller to drive the pipe discharging pipe chain transmission to drive the bidirectional screw rod to rotate, and then the pipe discharging device, the guider assembly and the counter assembly are driven to move in the width direction of the conveying roller to achieve wireless remote control of the pipe discharging pipes. The pipe arrangement operation of the manual reversing valve on the hydraulic operating platform and the wireless remote control pipe arrangement operation of the electromagnetic reversing valve are in a parallel connection relationship and are not interfered mutually.

Hydraulic oil output by a hydraulic pump of the continuous pipe working machine is transmitted to oil supply ports of the manual reversing valve and the electromagnetic reversing valve through the hydraulic partition plate assembly. The manual reversing valve and the electromagnetic reversing valve are connected to oil ports on two sides of the calandria hydraulic motor through pipelines to provide forward and backward hydraulic driving force for the calandria hydraulic motor, and the rotation of the calandria hydraulic motor drives the calandria chain to drive the bidirectional lead screw to rotate so as to realize the calandria.

The hydraulic control principle is described as follows:

and a hydraulic oil source P respectively enters a P1 port and a P2 port of the manual reversing valve and the electromagnetic reversing valve, and when the manual reversing valve and the electromagnetic reversing valve have no control signals, the manual reversing valve and the electromagnetic reversing valve are in a neutral state. The port A and the port B of the manual reversing valve and the port C and the port D of the electromagnetic reversing valve are connected together through a first shuttle valve and a second shuttle valve, and the port Fa1 of the first shuttle valve and the port Fb1 of the second shuttle valve are respectively connected to two sides of the port Fa and the port Fb of the calandria hydraulic motor.

When a right-turning manual control signal is applied to the manual reversing valve, hydraulic oil enters the port A of the manual reversing valve from the port P1, oil from the port A reaches the port a of the first shuttle valve, the hydraulic oil is led out from the port Fa1 of the first shuttle valve under the action of the first shuttle valve 1603 and enters the port Fa of the calandria hydraulic motor to drive the calandria hydraulic motor to rotate, the hydraulic oil flows to the port Fb1 of the second shuttle valve through the port Fb of the calandria hydraulic motor, and at the moment, the hydraulic oil flows back to a hydraulic oil tank through the port T no matter the hydraulic oil flows out from the port b of the second shuttle valve or flows out from the port d of the second shuttle valve, so that a hydraulic circulation loop is formed. Similarly, the same conclusion can be drawn when a left-turn manual control signal is applied to the manual directional valve.

When a left-turn wireless control signal is applied to the electromagnetic directional valve, hydraulic oil enters the port D of the electromagnetic directional valve from the port P2, oil from the port D reaches the port D of the shuttle valve II, the hydraulic oil is led out from the port Fb1 of the shuttle valve II under the action of the shuttle valve II and enters the port Fb of the calandria hydraulic motor to drive the calandria hydraulic motor to rotate, the hydraulic oil flows to the port Fa1 of the shuttle valve I through the port Fa of the calandria hydraulic motor, and at the moment, the hydraulic oil flows back to a hydraulic oil tank through the port T no matter the hydraulic oil flows out from the port a of the shuttle valve I or flows out from the port c of the shuttle valve I, so that a hydraulic circulation loop is formed.

When a right-turn wireless control signal is applied to the electromagnetic directional valve, hydraulic oil enters the port C of the electromagnetic directional valve from the port P2, oil from the port C reaches the port C of the first shuttle valve, the hydraulic oil is led out from the port Fa1 of the first shuttle valve and enters the port Fa of the calandria hydraulic motor under the action of the first shuttle valve to drive the calandria hydraulic motor to rotate, the hydraulic oil flows to the port Fb1 of the second shuttle valve through the port Fb of the calandria hydraulic motor, and at the moment, the hydraulic oil flows back to a hydraulic oil tank through the port T no matter the hydraulic oil flows out from the port b of the second shuttle valve or flows out from the port d of the second shuttle valve, so that a hydraulic circulation loop is formed.

A coiled tubing operation method without a tubing reversing operation is characterized in that the roller device is adopted for operation, the axial distance between a base fixing support and a moving support is adjusted, and a transportation roller is ensured to have enough loading space; hoisting the transport drum between the base fixing support and the movable support, enabling the central axis to be in a horizontal position, translating the transport drum to one side of the base fixing support, and enabling the fixed end support shaft to be inserted into a central hole in one side of the transport drum; inserting a moving end support shaft on a base moving support into a central hole at the other end of the transport roller, and clamping the transport roller; connecting the tail end of the inner high-pressure manifold to the tail end of the movable end supporting shaft; the external high pressure manifold is connected with the pumping equipment, and the complete channel of the external pumping equipment → the external high pressure manifold → the high pressure rotary joint → the internal high pressure manifold → the coiled tubing is established. Leading the coiled tubing to an injection head, and installing a corresponding downhole tool; when the coiled tubing is put into a well for operation, the coiled tubing is ensured to have certain tension when taken out of the transportation roller; when the coiled tubing is taken out of the well, the coiled tubing is tightly arranged on the transportation roller.

More specific operation steps are as follows:

before operation, the placing position of a well site is adjusted, and after the transportation roller is installed, the middle plane of the transportation roller in the width direction and the vertical central plane of the injection head are coplanar and are opposite to a well mouth;

respectively installing the adaptive shaft sleeve and the transport roller deflector rod to the fixed end support shaft and the movable end support shaft;

operating the self-adaptive hydraulic support leg assembly, and adjusting the extension of the support rod at the tail end on the hydraulic support leg to enable the support leg to be supported on the ground;

adjusting the axial distance between the base fixing support and the moving support to ensure that the transport roller has enough loading space;

ensuring that the inlet end of the inner high-pressure manifold, namely one end provided with the movable elbow II faces one side of the movable support;

hoisting the transport drum between the base fixing support and the movable support, wherein the central axis is in a horizontal position, translating the transport drum to one side of the base fixing support, inserting the fixed end support shaft into the central hole in one side of the transport drum, and simultaneously driving the fixed end support shaft and the transport drum shift lever to rotate so that the fixed end support shaft and the transport drum shift lever are completely inserted into the transport drum;

a moving end support shaft on the base moving support is inserted into a central hole at the other end of the transport roller, a transport roller deflector rod is inserted into the transport roller, the transport roller is clamped, the whole moving support and the transport roller are fixed, and stable and reliable operation is guaranteed;

connecting a movable elbow II at the tail end of the inner high-pressure manifold to the tail end of the movable end supporting shaft; the external high-pressure manifold is connected with pumping equipment through an auxiliary pipeline; thus, a complete passage of the external pumping equipment → the external high pressure manifold → the high pressure swivel → the internal high pressure manifold → the coiled tubing is established;

leading the tail end of the outermost layer of the coiled tubing to an injection head, conveying the tail end of the coiled tubing from the top to the bottom, and installing a downhole tool;

the pipe arrangement device drives the guider assembly to move to the position close to the led continuous oil pipe, and the continuous oil pipe is buckled in the guider assembly and the oil pipe lubricator assembly;

when the coiled tubing is put into a well, the coiled tubing is ensured to have certain tension when being taken out of the transportation roller, and the coiled tubing is not loosened when the coiled tubing is put in the well, so that the coiled tubing is ensured to be taken out smoothly;

when the continuous oil pipes are discharged from the well, the continuous oil pipes are ensured to be arranged on the transportation roller tightly, the positions of the pipe arrangement device and the guider assembly are adjusted at any time according to the arrangement condition of the continuous oil pipes, and the continuous oil pipes are ensured to be arranged on the transportation roller tightly, neatly and regularly.

The common transport drum of the prior art cannot be directly operated because of: the common transport drum used by coiled tubing manufacturers is generally a simple steel structural member, the function of the common transport drum is only used for storing and transporting coiled tubing, the support members in the mandrel are concentrated, the problem of installation space of high-pressure pipe fittings does not need to be considered, and the guide groove in the mandrel is only used for fixing the tail end of the innermost layer of the coiled tubing.

To perform normal coiled tubing operations, the outermost end (typically a polish rod) of the coiled tubing on the work drum must be connected to a downhole tool, the innermost end (typically a FIG1502 joint) must be connected to the rotor shaft of a high pressure swivel through a high pressure tube in the mandrel of the drum, and then connected to an external high pressure manifold through the stator end of the high pressure swivel, thereby establishing a complete fluid connection path. The tail end of the coiled tubing in the mandrel of the common transportation roller is generally a polished rod without a connecting joint, and the transportation roller is not internally provided with a high-pressure pipe fitting and further cannot be connected to a high-pressure rotating joint so as to be connected with an external high-pressure manifold, so that the common transportation roller cannot perform normal coiled tubing operation.

The conveying roller changes the structure of the supporting piece in the mandrel and is provided with an inner high-pressure manifold. Firstly, the tail end of the innermost layer of the coiled tubing, which is provided with the same type as the joint of the inner high-pressure manifold, penetrates through a guide groove of a transport roller to be connected with a second 90-degree elbow of the inner high-pressure manifold, then the production of the whole set of coiled tubing is carried out, and the tail end of the outermost layer of the coiled tubing after the production is finished is in a polished rod form and can be used for connecting downhole tools. During field operation, the movable elbow II at the other end of the high-pressure manifold in the transportation roller can be connected to the support shaft at the moving end of the pipe rewinder, and is communicated with the external high-pressure manifold through the high-pressure rotary joint to form a complete fluid channel, so that normal coiled pipe operation can be carried out.

The invention has the following positive effects: the transportation roller wound with the coiled tubing replaces a working roller, the injection head is matched to directly perform well entering and exiting operation without pipe reversing operation, the operation stability and the safety are better, the bearing capacity and the power performance are stronger, the operation is more convenient and faster, and the efficiency is high.

Drawings

FIG. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a top view of an embodiment of the present invention;

FIG. 3 is a left side view of an embodiment of the present invention;

FIG. 4 is a right side view of an embodiment of the present invention;

FIG. 5 is a schematic view of a cylinder support according to an embodiment of the present invention;

FIG. 6 is a schematic top view of a cylinder support according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of an external high pressure manifold according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a high pressure manifold in an embodiment of the present invention;

FIG. 9 is a front view of a director assembly according to an embodiment of the present invention;

FIG. 10 is a left side view of a director assembly according to an embodiment of the present invention;

FIG. 11 is a diagram of a wireless remote gauntlet architecture according to an embodiment of the invention;

fig. 12 is a schematic diagram of a wireless remote gauntlet according to an embodiment of the invention;

FIG. 13 is a schematic diagram of the operation of an embodiment of the present invention;

in the figure: 1-base assembly, 101-fixed bracket, 102-movable bracket, 103-cylindrical guide rail, 104-dovetail slide way, 105-round pipe, 106-sliding plate, 107-oil cylinder seat, 1071-oil cylinder support, 1072-pin seat, 1073-pin shaft, 108-hydraulic clapboard assembly, 109-electromagnetic directional valve box, 110-lifting lug, 111-electromagnetic directional valve, 112-wireless receiver, 113-lubricating oil tank, 2-fixed end reducer assembly, 3-fixed end chain transmission assembly, 4-fixed end bearing seat assembly, 401-fixed end support shaft, 402-transport roller deflector rod, 403-adaptive shaft sleeve, 5-hydraulic lifting calandria arm support assembly, 501-bidirectional screw rod, 502-calandria hydraulic motor, 503-calandria chain transmission, 504-inner sleeve support, 505-outer sleeve, 506-pressure bar, 507-extension bar, 508-calandria arm lift cylinder, 509-pin, 6-guide assembly, 600-tapered roller assembly, 601-upper housing, 602-hinge, 603-buckle, 604-adjusting screw, 605-spacer, 606-retainer, 607-lower housing, 608-guide bar, 609-tapered roller, 610-retainer, 611-bearing, 612-pin, 613-support sleeve, 7-counter assembly, 701-mechanical counter, 702-electronic encoder, 703-pin, 704-counter roller, 705-spring, 8-calandria device, 9-moving end bearing block assembly, 901-moving end support shaft, 10-rotary joint and high-pressure manifold, 1001-high-pressure rotary joint, 1002-external high-pressure manifold, 1003-internal high-pressure manifold, 1004-mounting rack, 1010-90-degree elbow I, 1011-high-pressure straight pipe I, 1012-plug valve I, 1013-T type tee joint I, 1014-pressure sensor, 1015-high-pressure flowmeter, 1016-movable elbow I, 1017-union plug, 1018-pressure relief needle valve, 1019-90-degree elbow II, 1020-high-pressure straight pipe II, 1021-plug valve II, 1022-T type tee joint II, 1023-movable elbow II, 11-moving end chain drive assembly, 12-moving end reducer assembly, 13-adaptive hydraulic support leg assembly, 1301-adaptive oil cylinder, 1302-support leg, 1303-pin shaft, 1304-lug plate seat, 1305-a support rod, 14-a width adjusting oil cylinder, 15-a steel wire rope hanger, 1501-a shackle, 16-a hydraulic operation platform, 1601-a manual reversing valve, 1602-a hydraulic hose bundle, 1603-a shuttle valve I, 1604-a shuttle valve II, 1605-a hydraulic oil tank, 17-a transportation roller, 18-a continuous oil pipe, 19-a wireless remote controller, 20-an oil pipe lubricator assembly and 21-an injection head.

Detailed Description

The invention is further described with reference to the following figures and examples:

a coiled tubing does not need the cylinder device of the back-off, including: the device comprises a base assembly 1, a fixed end speed reducer assembly 2, a fixed end chain transmission assembly 3, a fixed end bearing seat assembly 4, a hydraulic lifting pipe discharging arm support assembly 5, a guider assembly 6, a counter assembly 7, a pipe discharging device 8, a moving end bearing seat assembly 9, a rotary joint, a high-pressure manifold 10, a moving end chain transmission assembly 11, a moving end speed reducer assembly 12, a hydraulic operating platform 16 and a conveying roller 17; the base assembly 1 comprises a fixed bracket 101 and a movable bracket 102 which are oppositely arranged; the fixed end speed reducer assembly 2, the fixed end chain transmission assembly 3, the fixed end bearing block assembly 4, the moving end bearing block assembly 9, the moving end speed reducer assembly 12 and the moving end chain transmission assembly 11 are respectively arranged on the base fixed support 101 and the moving support 102, are arranged in pairs in an opposite manner, and drive the transportation roller 17 to rotate after the transportation roller 17 is loaded and locked; the base assembly 1 is provided with a hydraulic lifting calandria arm support assembly 5, the calandria device 8 is arranged on the hydraulic lifting calandria arm support assembly 5, and is connected with a continuous oil pipe 18 channel through a rotary joint and a high-pressure manifold 10, and various well access operations can be carried out by matching with an injection head 21.

The bottom of the fixed bracket 101 is provided with two parallel cylindrical guide rails 103 and a middle dovetail-shaped slideway 104; the movable support 102 has three support legs, the bottoms of the two support legs on the outer side are provided with two parallel round pipes 105, the two parallel round pipes 105 are respectively sleeved on the two parallel cylindrical guide rails 103 of the fixed support 101, the bottom of one support leg in the middle is provided with a sliding plate 106, the sliding plate 106 is embedded in a middle dovetail-shaped slide way 104, and the movable support 102 can move left and right along the two parallel cylindrical guide rails 103 and the middle dovetail-shaped slide way 104; a set of width adjusting oil cylinders 14 are correspondingly configured on the two parallel cylindrical guide rails 103, one end of each width adjusting oil cylinder 14 is mounted on the fixed support 101, the other end of each width adjusting oil cylinder is fixed on the circular tube 105 of the movable support 102, the axial distance between the fixed support 101 and the movable support 102 is adjusted through the width adjusting oil cylinders 14, and the conveying rollers 17 with different widths are arranged between the fixed support 101 and the movable support 102; two rows of bolt holes are formed in the middle dovetail-shaped slide way 104 in the length direction, two rows of long holes are formed in the sliding plate 106 and matched with the two rows of bolt holes, the hole pitch of the multiple relation between the bolt holes and the long holes ensures that at least four groups of bolt holes correspond to each other when the sliding plate 106 is at any position, the movable support 102 is fixed, and the transportation roller 17 is locked.

In order to ensure that the conveying roller 17 with a large width range is suitable, the oil cylinder seat 107 is arranged on the base fixing support 101, four groups of U-shaped grooves are formed in an oil cylinder support 1071 of the oil cylinder seat 107 to form four working positions, a pin seat 1072 of the oil cylinder seat 107 is connected with the width adjusting oil cylinder 14 through a pin shaft 1073 and is supported in the U-shaped grooves of the oil cylinder support 1071, and the working positions of the oil cylinder 14 can be changed aiming at the conveying rollers 17 with different widths, so that the stroke of the oil cylinder is shortened, and the stress is improved.

The four corners of the base assembly 1 are respectively provided with a set of self-adaptive hydraulic leg assembly 13 which comprises a self-adaptive oil cylinder 1301, a leg 1302, a pin 1303, an ear plate seat 1304 and a support rod 1305, one end of each of the self-adaptive oil cylinder 1301 and the leg 1302 is installed on the base assembly 1 through the respective ear plate seat 1304 and the pin 1303, the other end of each of the self-adaptive oil cylinders 1301 is connected with the leg 1302 through the pin 1303, the other end of each of the legs 1302 is provided with the support rod 1305, the support rod 1305 is connected to the leg 1302 through threads, the height of the support rod 1305 is adjustable, one end, in contact with the ground, of the support rod 1305 is provided with a spherical hinge type support plate, the support rod 1305 can be adapted to and reliably supported on the uneven ground, the stability of equipment operation is guaranteed, and the support points are guaranteed to have equal support force through a hydraulic system.

The base assembly 1 is provided with four lifting lugs 110, and is provided with a steel wire rope lifting appliance 15 and a shackle 1501 for integral lifting during equipment transportation.

The top of fixed bolster 101 and the movable support 102 of base assembly 1 is equipped with stiff end bearing frame assembly 4 and removes end bearing frame assembly 9 respectively, all contains two heavy-duty bearings in stiff end bearing frame assembly 4 and the removal end bearing frame assembly 9, and two heavy-duty bearings in stiff end bearing frame assembly 4 and the removal end bearing frame assembly 9 are installed respectively on stiff end back shaft 401 and removal end back shaft 901, and stiff end back shaft 401 and removal end back shaft 901 are arranged relatively.

The input end of the fixed end support shaft 401 is used for installing a driven chain wheel of the fixed end chain transmission assembly 3 and is arranged on the outer side of the base fixing support 101, the output end of the fixed end support shaft 401 is provided with a transportation roller deflector rod 402 and an adaptation shaft sleeve 403, the transportation roller deflector rod 402 is arranged on the support shaft 401 through a square key, the adaptation shaft sleeve 403 is used for transporting the axial fixation of the roller deflector rod 402 and supporting the transportation roller 17 together with the support shaft 401, and the transportation roller deflector rod is arranged opposite to the moving end support shaft 901 (provided with the transportation roller deflector rod 402 and the adaptation shaft sleeve 403) towards the inner side of the fixing support 101 and is coaxial. The transport cylinder shift lever 402 includes two shift pins, and the center distance between the two shift pins can be adjusted to accommodate different types of transport cylinders 17.

The moving end support shaft 901 is a hollow structure, both ends of the moving end support shaft are provided with connecting threads of the same type as the high-pressure pipe fittings of the oil field, the tail end of the input end is used for installing a rotary joint and a high-pressure manifold 10, and a driven chain wheel of the moving end chain transmission assembly 11 is installed, and the rotary joint and the driven chain wheel are both arranged on the outer side of the base moving support 102. The rotary union and high pressure manifold 10 comprises: the high-pressure rotary joint 1001 and an external high-pressure manifold 1002 and an internal high-pressure manifold 1003 which are connected with the high-pressure rotary joint 1001, wherein the high-pressure rotary joint 1001 and the external high-pressure manifold 1002 are supported on the base moving bracket 102 through a mounting rack 1004; the output end of the moving end supporting shaft 901 is provided with a transport roller deflector rod 402 and an adaptive shaft sleeve 403, the transport roller deflector rod 402 is arranged on the supporting shaft 901 through a square key, the adaptive shaft sleeve 403 is used for axially fixing the transport roller deflector rod 402 and faces to the inner side of the moving support 102, and the tail end of the supporting shaft 901 is in threaded connection with an inner high-pressure manifold 1003 of the transport roller 17 and is finally communicated with a channel of the coiled tubing 18.

The external high pressure manifold 1002 includes: a 90-degree elbow I1010, a high-pressure straight pipe I1011, a plug valve I1012, a T-shaped tee joint I1013, a pressure sensor 1014, a high-pressure flowmeter 1015, a movable elbow I1016, a union plug 1017 and the like. The external high-pressure manifold 1002 is of a double-inlet structure and can be connected with external pumping equipment through two 90-degree elbows I1010 at the tail end, wherein one inlet needs to pass through a high-pressure flowmeter 1015 for passing through liquid media with low viscosity and density, and the other inlet does not pass through the high-pressure flowmeter 1015 for passing through gas media; the first movable elbow 1016 is used to connect the high pressure swivel 1001 and the moving end support shaft 901.

The inner high pressure manifold 1003 includes: a second 90-degree elbow 1019, a second high-pressure straight pipe 1020, a second plug valve 1021, a second T-shaped tee 1022, a second movable elbow 1023 and a pressure relief needle valve 1018; the movable elbow two 1023 at one end is used for connecting the moving end supporting shaft 901, the movable elbow two 1023 has the functions of being conveniently connected with the moving end supporting shaft 901 and absorbing a small amount of gaps and vibration between the transportation roller 17 and the moving end supporting shaft 901, and the 90-degree elbow two 1019 at the other end is used for connecting the continuous oil pipe 18; a pressure relief needle valve 1018 is used for unloading.

The fixed end speed reducer assembly 2, the fixed end chain transmission assembly 3, the moving end speed reducer assembly 12 and the moving end chain transmission assembly 11 are respectively installed on the base fixing support 101 and the moving support 102 and are arranged in a pairwise opposite mode, output shafts of the fixed end speed reducer assembly, the moving end chain transmission assembly and the moving support 102 face the outer sides of the base fixing support 101 and the moving support 102, driving chain wheels of the respective chain transmission assemblies are installed on the output shafts, and brakes and hydraulic motors of the respective speed reducer input ends are installed. The two groups of chain transmission assemblies respectively comprise a driving chain wheel, a driven chain wheel, a chain wheel shield and the like. After the transportation drum 17 is loaded and locked, the hydraulic motors on both sides drive the speed reducers, and the speed reducers on both sides drive the transportation drum 17 to rotate through the first-stage chain transmission (speed reduction and torque increase) and the transportation drum deflector rods 402 on both sides. The movable end support shaft 901 is connected with the inner high-pressure manifold 1003 of the transportation roller 17, namely, the movable end support shaft can be connected with the continuous oil pipe 18 channel, and various well access operations can be carried out by matching with the injection head 21.

In order to adapt to the transportation roller 17 with larger size and facilitate the transportation of equipment, the hydraulic lifting calandria arm support assembly 5 is designed into a hydraulic lifting structure. The lifting is realized through the built-in calandria arm lifting oil cylinder 508, the height of the calandria arm support 5 can be adjusted according to the transport rollers 17 with different outer diameters, so that the coiled tubing 18 is ensured to have a proper retraction angle on the transport rollers 17, and the pipe reversing operation is convenient. The lifting part mainly comprises a calandria arm lifting oil cylinder 508, an outer sleeve 505, an inner sleeve bracket 504, an extension bar 507, a pressure bar 506, a pin shaft 509 and the like, wherein the two groups of outer sleeve 505, the extension bar 507 and the pressure bar 506 are fixed on the base assembly 1, the inner sleeve bracket 504 is correspondingly inserted into the two outer sleeves 505, and two ends of the calandria arm lifting oil cylinder 508 are respectively connected to the outer sleeve 505 and the inner sleeve bracket 504 through the pin shaft 509. During transportation, the height of the hydraulic lifting calandria arm support assembly 5 is shortened to the shortest through the calandria arm lifting oil cylinder 508, the hydraulic lifting calandria arm support assembly 5 is made to fall to one side of the fixed end bearing seat assembly 4 and the movable end bearing seat assembly 9, two ends of the hydraulic lifting calandria arm support assembly 5 are fixed through the lock pin, and the transportation size of the equipment can be reduced. The top of the hydraulic lifting pipe discharging arm support 5 is provided with a bidirectional screw 501, a pipe discharging device 8, a guider assembly 6, a counter assembly 7 and an oil pipe lubricator assembly 20, the pipe discharging mode is forced pipe discharging, and a pipe discharging hydraulic motor 502 drives the bidirectional screw 501 to rotate through a pipe discharging chain drive 503 so as to drive the pipe discharging device 8, the guider assembly 6 and the counter assembly 7 to move in the width direction of the conveying roller 17 to discharge pipes.

The guider assembly 6 comprises an upper shell 601, a hinge 602, a buckle 603, a tapered roller assembly 600, an adjusting screw 604, a spacing sleeve 605, a retaining ring 606, a lower shell 607, a guide rod 608 and the like; the upper shell 601 and the lower shell 607 form an opening and closing structure through respective hinges 602 and hasps 603, the guide rod 608 is connected with the lower shell 607 through a pin shaft 612, two groups (four in total) of adjusting screw rods 604 and conical roller assemblies 600 are respectively and correspondingly installed on the upper shell 601 and the lower shell 607, two groups of conical roller assemblies 600 are installed on each adjusting screw rod 604, and the conical surfaces of the conical rollers 609 are oppositely arranged; the tapered roller assembly 600 comprises a tapered roller 609, a bearing 611, a retainer ring 610 and a support sleeve 613, wherein the retainer ring 610 is used for connecting and fixing the tapered roller 609, the bearing 611 and the support sleeve 613 together; the two ends of the adjusting screw 604 are external threads with opposite turning directions, the supporting sleeves 613 of the two groups of conical roller assemblies 600 on the same adjusting screw 604 are internal threads with opposite turning directions, the two supporting sleeves 613 on the adjusting screw 604 are sleeved on the upper shell 601 or the lower shell 607, the matching surface is a non-cylindrical surface and is used for limiting the rotation freedom degree of the supporting sleeves 613, meanwhile, the supporting sleeves 613 are inserted into holes of the spacing sleeve 605, the two ends of the adjusting screw 604 are fixed on the spacing sleeves 605 on the two sides through the retaining rings 606, and the spacing sleeves 605 are supported on the two sides of the upper shell 601 or the lower shell 607. Thus, the rhombic surfaces formed by the four conical rollers 609 on the two corresponding adjusting screws 604 between the upper shell 601 and the lower shell 607 can pass through the coiled tubing 18, and the axial distance between the conical rollers 609 can be changed by rotating the adjusting screws 604, so that the coiled tubing 18 with different outer diameters in a certain range can be adapted.

A counter assembly 7 is installed above the guider assembly 6, the counter assembly 7 is connected to the guider assembly 6 through a pin shaft 703, the length of the coiled tubing 18 which is fed in/out is recorded through the rolling of a counting roller 704 on the coiled tubing 18, the counting roller 704 is tightly pressed on the coiled tubing 18 through the elastic force of a spring 705, and a mechanical counter 701 and an electronic encoder 702 are installed on the counter assembly 7.

The bottom of the fixed support 101 of the base assembly 1 is provided with a lubricating oil tank 113, which is used for conveying lubricating oil to the oil pipe lubricator assembly 20 at the top of the guider assembly 6 through a pipeline in a mode of 'gas-cap oil' during well outlet and smearing the lubricating oil on the continuous oil pipe 18.

The hydraulic operation platform 16 is provided with a manual reversing valve 1601 and a hydraulic hose bundle 1602 with a certain length for controlling the actions of the width adjustment cylinder 14 and the calandria hydraulic motor 502, so that an operator can be far away from a high-pressure area and a hoisting danger area of the equipment. The outside of the fixed support 101 of the base assembly 1 is provided with a hydraulic partition assembly 108 and an electromagnetic directional valve box 109, the hydraulic partition assembly 108 is used for connecting a hydraulic power source of the continuous pipe operating machine, an electromagnetic directional valve 111 and a wireless receiver 112 are installed in the electromagnetic directional valve box 109, and are used for controlling the action of a pipe arrangement hydraulic motor 502 through a wireless remote controller 19, driving a pipe arrangement chain drive 503 to drive a bidirectional screw 501 to rotate, and further driving a pipe arrangement device 8, a guider assembly 6 and a counter assembly 7 to move in the width direction of a transport roller 17 to realize wireless remote control of pipe arrangement. The pipe discharging operation of the manual reversing valve 1601 on the hydraulic operation platform 16 and the wireless remote control pipe discharging operation of the electromagnetic reversing valve 111 are in parallel connection, and the two are not interfered with each other.

Hydraulic oil output by the hydraulic pump of the continuous pipe working machine is transmitted to oil supply ports of the manual directional valve 1601 and the electromagnetic directional valve 111 through the hydraulic partition assembly 108. The manual reversing valve 1601 and the electromagnetic reversing valve 111 are connected to oil ports on two sides of the calandria hydraulic motor 502 through pipelines to provide forward and backward hydraulic driving force for the calandria hydraulic motor 502, and the rotation of the calandria hydraulic motor 502 drives the calandria chain drive 503 to drive the bidirectional screw 501 to rotate, so that calandria is realized.

The hydraulic control principle is described as follows:

the hydraulic oil source P respectively enters a port P1 and a port P2 of the manual reversing valve 1601 and the electromagnetic reversing valve 111, and when the manual reversing valve 1601 and the electromagnetic reversing valve 111 have no control signals, the manual reversing valve 1601 and the electromagnetic reversing valve 111 are in a neutral state. The port A and the port B of the manual reversing valve 1601 and the port C and the port D of the electromagnetic reversing valve 111 are connected together through a first shuttle valve 1603 and a second shuttle valve 1604, and the port Fa1 of the first shuttle valve 1603 and the port Fb1 of the second shuttle valve 1604 are respectively connected to two sides of the port Fa and the port Fb of the calandria hydraulic motor 502.

When a right-turn manual control signal is applied to the manual reversing valve 1601, hydraulic oil enters the port a of the manual reversing valve 1601 from the port P1, the outlet oil of the port a reaches the port a of the shuttle valve 1603, the hydraulic oil is led out from the port Fa1 of the shuttle valve 1603 under the action of the shuttle valve 1603, enters the port Fa of the calandria hydraulic motor 502, the calandria hydraulic motor 502 is driven to rotate, the hydraulic oil flows to the port Fb1 of the shuttle valve two 1604 through the port Fb of the calandria hydraulic motor 502, and at this time, the hydraulic oil flows back to the hydraulic oil tank 1605 through the port T no matter the hydraulic oil flows out from the port b of the shuttle valve two 1604 or flows out from the port d of the shuttle valve two 1604, so that a hydraulic circulation loop is formed. Similarly, the same conclusion can be drawn when a left turn manual control signal is applied to the manual changeover valve 1601.

When a left-turn wireless control signal is applied to the electromagnetic directional valve 111, hydraulic oil enters the port D of the electromagnetic directional valve 111 from the port P2, oil discharged from the port D reaches the port D of the shuttle valve II 1604, the hydraulic oil is led out from the port Fb1 of the shuttle valve II 1604 under the action of the shuttle valve II 1604 and enters the port Fb of the calandria hydraulic motor 502 to drive the calandria hydraulic motor 502 to rotate, and the hydraulic oil flows to the port Fa1 of the shuttle valve I1603 through the port Fa of the calandria hydraulic motor 502, and at the moment, the hydraulic oil flows back to the hydraulic oil tank 1605 through the port T no matter the hydraulic oil flows out from the port a of the shuttle valve I1603 or flows out from the port c of the shuttle valve I1603, so that a hydraulic circulation loop is formed.

When a right-turn wireless control signal is applied to the electromagnetic directional valve 111, hydraulic oil enters the port C of the electromagnetic directional valve 111 from the port P2, oil of the port C reaches the port C of the shuttle valve 1603, due to the action of the shuttle valve 1603, the hydraulic oil is led out from the port Fa1 of the shuttle valve 1603 and enters the port Fa of the calandria hydraulic motor 502 to drive the calandria hydraulic motor 502 to rotate, and then the hydraulic oil flows to the port Fb1 of the shuttle valve II 1604 through the port Fb of the calandria hydraulic motor 502, and at the moment, the hydraulic oil flows back to the hydraulic oil tank 1605 through the port T no matter the hydraulic oil flows out from the port b of the shuttle valve II 1604 or flows out from the port d of the shuttle valve II 1604, so that a hydraulic circulation loop is formed.

More specific operation steps are as follows:

before operation, the placing position of the well site is adjusted, so that the middle plane of the transportation roller in the width direction after the transportation roller is installed is coplanar with the vertical central plane of the injection head and is opposite to the well mouth.

And respectively installing the adaptive shaft sleeve and the transport roller deflector rod to the fixed end support shaft and the movable end support shaft.

And operating the self-adaptive hydraulic support leg assembly, and adjusting the extension amount of the support rod at the tail end on the hydraulic support leg to enable the support rod to be supported on the ground.

The axial distance between the base fixing support and the moving support is adjusted, and the conveying roller is guaranteed to have enough loading space.

The inlet end of the inner high-pressure manifold, namely the end provided with the movable elbow II faces one side of the movable support.

The conveying roller is hoisted to a position between the base fixing support and the moving support, the central axis is in a horizontal position, the conveying roller is horizontally moved to one side of the base fixing support, the fixed end supporting shaft is inserted into the central hole in one side of the conveying roller, the fixed end supporting shaft and the conveying roller driving lever are driven to rotate simultaneously, and the fixed end supporting shaft and the conveying roller driving lever are completely inserted into the conveying roller.

Make the removal end back shaft on the base movable support insert the centre bore of the transportation cylinder other end, make the transportation cylinder driving lever insert in the transportation cylinder to press from both sides the transportation cylinder tight, it is fixed with whole movable support and transportation cylinder, guarantee the operation reliable and stable.

Connecting a movable elbow II at the tail end of the inner high-pressure manifold to the tail end of the movable end supporting shaft; the external high-pressure manifold is connected with pumping equipment through an auxiliary pipeline; this creates a complete passageway for the external pumping equipment → the external high pressure manifold → the high pressure swivel → the internal high pressure manifold → the coiled tubing.

The coiled tubing outermost end is introduced to the injector head and the coiled tubing end is run from top to bottom, and the downhole tool is installed.

The guider assembly is driven to move to the position close to the led-out continuous oil pipe through the pipe discharging device, and the continuous oil pipe is buckled in the guider assembly and the oil pipe lubricator assembly.

When the coiled tubing is put into a well, the coiled tubing is guaranteed to have a certain tension when being taken out of the conveying roller, the coiled tubing is not loosened when the coiled tubing is put in the well, and the coiled tubing is guaranteed to be taken out smoothly.

In an embodiment, referring to fig. 13, the operation is as follows:

before operation, the placing position of the device on a well site is adjusted, the middle plane of the device in the width direction of the transportation roller after the transportation roller is installed is ensured to be coplanar with the vertical central plane of the injection head, namely the device is opposite to a well head, a hydraulic driving hose and an electric circuit between the pipe reversing device and the continuous oil pipe operation machine are respectively connected, and a hydraulic operation platform is connected. And selecting a proper adaptive shaft sleeve and a proper transportation roller driving lever according to the sizes of the central hole of the transportation roller and the driving pin hole and the center distance, and respectively installing the adaptive shaft sleeve and the transportation roller driving lever to the fixed end supporting shaft and the movable end supporting shaft. And operating the self-adaptive hydraulic support leg assembly, and adjusting the extension amount of the support rod at the tail end on the hydraulic support leg to enable the support rod to be supported on the ground. The working position of the width adjusting oil cylinder is selected according to the size of the transport roller, a roller clamping/loosening handle of a manual reversing valve on the hydraulic operating platform is operated, the axial distance between the base fixing support and the moving support is adjusted, and the transport roller is guaranteed to have enough loading space. Because the inner high-pressure manifold is arranged in the core shaft of the conveying roller, before installation, the inlet end of the inner high-pressure manifold, namely the end provided with the movable elbow II, is ensured to face one side of the movable support. The conveying roller is hoisted between the base fixing support and the moving support, when the central axis is in a horizontal position and is approximately coaxial with the two end support shafts, the conveying roller is translated to one side of the base fixing support, the fixed end support shaft is inserted into the central hole in one side of the conveying roller, meanwhile, the fixed end speed reducer and the chain transmission assembly are driven by hydraulic power to drive the fixed end support shaft and the conveying roller driving lever to rotate, when the conveying roller driving lever rotates to the state that the two shifting pins of the conveying roller driving lever are aligned with the shifting pin holes, the rotation is stopped, and the conveying roller is continuously translated to enable the fixed end support shaft and the conveying roller driving lever to be completely inserted into the conveying roller. The manual reversing valve handle is operated, the width adjusting oil cylinder is contracted, a moving end supporting shaft on the base moving support is inserted into a central hole at the other end of the transportation roller, the moving end speed reducer and the chain transmission assembly are rotated through hydraulic power to drive the moving end supporting shaft and the transportation roller driving lever to rotate, when the moving end supporting shaft and the transportation roller driving lever rotate to be aligned with the pin shifting holes, the rotation is stopped, the width adjusting oil cylinder is continuously contracted, the moving end supporting shaft and the transportation roller driving lever are completely inserted into the transportation roller and clamp the transportation roller, the sliding plate, namely the whole moving support and the transportation roller are fixed through bolts, and the stable and reliable operation is guaranteed. It should be noted that the hydraulic motors of the fixed end reducer assembly and the movable end reducer assembly are connected in parallel, and the output torque is 2 times of the driving torque of a single reducer.

An operator enters the transport roller mandrel from one side of the movable support, and a movable elbow II at the tail end of the inner high-pressure manifold is connected to the tail end of the movable end supporting shaft; the external high-pressure manifold is connected with pumping equipment through an auxiliary pipeline; this creates a complete passageway for the external pumping equipment → the external high pressure manifold → the high pressure swivel → the internal high pressure manifold → the coiled tubing. The downhole tool is installed by guiding the outermost end of the coiled tubing to the injector head using a crane or other tractor and feeding the coiled tubing end from top to bottom through the injector head drive system. The manual reversing valve calandria handle on the wireless remote controller or the hydraulic operating platform is operated, the calandria hydraulic motor drives the bidirectional screw rod to rotate through calandria chain transmission, the guider assembly is driven by the calandria device to move to the position right above or below the led-out continuous oil pipe, the height of the calandria arm support assembly is adjusted through the calandria arm lifting oil cylinder, and the head of the guider assembly is adjusted to be close to the led-out continuous oil pipe. 4 adjusting screws of the guider assembly are sequentially adjusted according to the diameter of the continuous oil pipe, so that the passage space of the conical roller assembly is adapted to the diameter of the continuous oil pipe, and in order to ensure accurate adjustment, the upper shell and the lower shell of the guider assembly are provided with scale marks corresponding to the continuous oil pipes with different diameters. The fixing pins of the two hinges on one side of the guider assembly are disassembled, the two hasps on the same side are opened, and the upper shell is turned upwards by 180 degrees. The oil pipe lubricator assembly is also of an up-down opening-closing structure, and the oil pipe lubricator assembly is opened. And the continuous oil pipe is positioned in a middle groove of the lower shell of the guider assembly, the upper shell is buckled, the hinge bolt is installed, the hasp is buckled, and the oil pipe lubricator assembly is buckled.

When the coiled tubing is put into a well, the two hydraulic motors provide approximately constant reverse torque, the hydraulic motor of the injection head provides driving torque larger than that of the hydraulic motor of the coiled tubing, certain tension force is guaranteed when the coiled tubing is taken out from the transportation roller, the coiled tubing is prevented from being loosened when the coiled tubing is put, and an operator can adjust the positions of the tube arranging device and the guider assembly at any time through a manual reversing valve or a wireless remote controller on a hydraulic operation platform, so that the coiled tubing is taken out smoothly. The counter assembly is used to record the length and speed of coiled tubing run into the well.

When the continuous oil pipes are discharged from a well, the two hydraulic motors drive the transportation roller to rotate at a speed slightly higher than the speed of the injection head motor to lift the continuous oil pipes, so that the continuous oil pipes between the transportation roller and the injection head have certain tension, the continuous oil pipes are ensured to be tightly arranged on the transportation roller, an operator can adjust the positions of the pipe arranging device and the guider assembly at any time according to the arrangement condition of the continuous oil pipes through a manual reversing valve or a wireless remote controller on a hydraulic operation platform, and the continuous oil pipes are ensured to be tightly, neatly and regularly arranged on the transportation roller. In addition, an oil pipe lubricating button is required to be operated in a control room in the process of well leaving operation, and lubricating oil is uniformly coated on the outer layer of the continuous oil pipe through an oil pipe lubricator assembly to prevent rusting. The counter assembly is used for recording the length and the speed of the coiled tubing which is lifted out.

After the coiled tubing is completely taken out from the well and the downhole tool is dismantled, the coiled tubing at the injection head end is pulled in advance by a crane, so that the tail end of the coiled tubing is completely sent out from the injection head, and the coiled tubing is tightly and orderly wound between the injection head and the transportation roller by the aid of the pulling force of the crane. When the tail end of the continuous oil pipe is close to the guider assembly, the fixing pins of the two hinges on one side of the guider assembly are detached, the two hasps on the same side are opened, the upper shell is turned over for 180 degrees upwards, the oil pipe lubricator assembly is opened, the continuous oil pipe is taken out, the guider assembly and the oil pipe lubricator assembly are buckled, and the tail end of the continuous oil pipe is continuously wound and fixed on the transportation roller. The hydraulic lifting calandria arm support assembly is contracted to the lowest. An operator enters the transport roller mandrel from one side of the movable support to disconnect the movable elbow II at the tail end of the inner high-pressure manifold from the movable end supporting shaft.

Claims

1. The utility model provides a coiled tubing need not the cylinder device of pipe, its characterized in that: the method comprises the following steps: the device comprises a base assembly (1), a fixed end speed reducer assembly (2), a fixed end chain transmission assembly (3), a fixed end bearing seat assembly (4), a hydraulic lifting pipe arranging arm support assembly (5), a guider assembly (6), a counter assembly (7), a pipe arranging device (8), a moving end bearing seat assembly (9), a rotary joint, a high-pressure manifold (10), a moving end chain transmission assembly (11), a moving end speed reducer assembly (12), a hydraulic operating platform (16) and a conveying roller (17); the base assembly (1) comprises a fixed bracket (101) and a movable bracket (102) which are oppositely arranged; the fixed end speed reducer assembly (2), the fixed end chain transmission assembly (3), the fixed end bearing block assembly (4), the moving end bearing block assembly (9), the moving end speed reducer assembly (12) and the moving end chain transmission assembly (11) are respectively arranged on the base fixing support (101) and the moving support (102) in a pairwise opposite arrangement mode, and the transport roller (17) is driven to rotate after being loaded and locked; a hydraulic lifting calandria arm support assembly (5) is arranged on a base assembly (1), a calandria device (8) is arranged on the hydraulic lifting calandria arm support assembly (5), and is connected with a continuous oil pipe (18) channel through a rotary joint and a high-pressure manifold (10) and matched with an injection head (21) to carry out various well access operations.

2. The coiled tubing backless drum device according to claim 1, wherein: the bottom of the fixed support (101) is provided with two parallel cylindrical guide rails (103) and a middle dovetail-shaped slideway (104); the movable support (102) is provided with three support legs, the bottoms of the two support legs on the outer side are provided with two parallel circular tubes (105), the two parallel circular tubes (105) are respectively sleeved on the two parallel cylindrical guide rails (103) of the fixed support (101), the bottom of one support leg in the middle is provided with a sliding plate (106), the sliding plate (106) is embedded in a middle dovetail-shaped slide way (104), and the movable support (101) can move left and right along the two parallel cylindrical guide rails (103) and the middle dovetail-shaped slide way (104); a set of width adjusting oil cylinders (14) are correspondingly arranged on each of the two parallel cylindrical guide rails (103), one end of each width adjusting oil cylinder (14) is installed on the fixed support (101), the other end of each width adjusting oil cylinder is fixed on the circular tube (105) of the movable support (102), the axial distance between the fixed support (101) and the movable support (102) is adjusted through the width adjusting oil cylinders (14), and transport rollers (17) with different widths are arranged between the fixed support (101) and the movable support (102); two rows of bolt holes are formed in the length direction of the middle dovetail type slide way (104), two rows of long-strip holes are formed in the sliding plate (106) and matched with the two rows of bolt holes, and the multiple relation hole pitch between the bolt holes and the long-strip holes ensures that at least four groups of bolt holes correspond to each other when the sliding plate (106) is at any position, so that the movable support (102) is fixed, and the transportation roller (17) is locked.

3. The coiled tubing backless roller device according to claim 1 or 2, wherein: the top of fixed bolster (101) and removal support (102) of base assembly (1) is equipped with stiff end bearing frame assembly (4) and removal end bearing frame assembly (9) respectively, all contain two heavy-duty bearings in stiff end bearing frame assembly (4) and removal end bearing frame assembly (9), install respectively on stiff end back shaft (401) and removal end back shaft (901) two heavy-duty bearings in stiff end bearing frame assembly (4) and removal end bearing frame assembly (9), stiff end back shaft (401) and removal end back shaft (901) mutual disposition.

4. The coiled tubing backless drum device according to claim 3, wherein: the moving end supporting shaft (901) is of a hollow structure, two ends of the moving end supporting shaft are provided with connecting threads which are the same as the type of the high-pressure pipe fitting in the oil field, the tail end of the input end of the moving end supporting shaft is used for installing a rotary joint and a high-pressure manifold (10), and a driven chain wheel of a moving end chain transmission assembly (11) is installed, and the rotary joint and the driven chain wheel are both arranged on the outer side of the base moving support (102); the rotary joint and the high-pressure manifold (10) comprise a high-pressure rotary joint (1001) and an external high-pressure manifold (1002) and an internal high-pressure manifold (1003) which are connected with the high-pressure rotary joint, and the high-pressure rotary joint (1001) and the external high-pressure manifold (1002) are supported on the base moving support (102) through a mounting frame (1004); the output end of the moving end supporting shaft (901) is provided with a transporting roller deflector rod (402) and an adaptive shaft sleeve (403), the deflector rod (402) is arranged on the supporting shaft (901) through a square key, the adaptive shaft sleeve (403) is used for axially fixing the deflector rod (402) and faces the inner side of the moving support (102), and the tail end of the supporting shaft (901) is in threaded connection with an inner high-pressure manifold (1003) of the transporting roller (17) and is finally communicated with a channel of the coiled tubing (18).

5. The coiled tubing backless drum device according to claim 4, wherein: the external high pressure manifold (1002) comprises: the device comprises a first 90-degree elbow (1010), a first high-pressure straight pipe (1011), a first plug valve (1012), a first T-shaped tee (1013), a pressure sensor (1014), a high-pressure flow meter (1015), a first movable elbow (1016) and a union plug (1017); the external high-pressure manifold (1002) is of a double-inlet structure and can be connected with external pumping equipment through two 90-degree elbows I (1010) at the tail end, wherein one inlet needs to pass through a high-pressure flowmeter (1015) for passing through liquid media with low viscosity and density, and the other inlet does not pass through the high-pressure flowmeter (1015) for passing through gas media; the movable elbow I (1016) is used for connecting the high-pressure rotating joint (1001) and connecting the movable end supporting shaft (901).

6. The coiled tubing backless drum device according to claim 5, wherein: the inner high pressure manifold (1003) comprises: a 90-degree elbow II (1019), a high-pressure straight pipe II (1020), a plug valve II (1021), a T-shaped tee joint II (1022), a movable elbow II (1023) and a pressure relief needle valve (1018); the movable elbow II (1023) at one end is used for connecting the moving end supporting shaft (901), the movable elbow II (1023) has the functions of being conveniently connected with the moving end supporting shaft (901) and absorbing a small amount of clearance and vibration between the transportation roller (17) and the moving end supporting shaft (901), and the 90-degree elbow II (1019) at the other end is used for connecting the continuous oil pipe (18); a pressure relief needle valve (1018) is used for unloading.

7. The coiled tubing backless drum device according to claim 3, wherein: set up hydro-cylinder seat (107) on base fixed bolster (101), hydro-cylinder support (1071) of hydro-cylinder seat (107) are equipped with four groups of U type grooves, form four operating position, and round pin seat (1072) of hydro-cylinder seat (107) link to each other with width adjustment hydro-cylinder (14) through round pin axle (1073) to support in the U type groove of hydro-cylinder support (1071), can change the operating position of hydro-cylinder (14) to the transport cylinder (17) of different widths, thereby shorten the hydro-cylinder stroke, improve the atress.

8. The coiled tubing backless drum device according to claim 3, wherein: four corners of the base assembly (1) are respectively provided with a set of self-adaptive hydraulic leg assembly (13) which comprises a self-adaptive oil cylinder (1301), a leg (1302), a pin shaft (1303), an ear plate seat (1304) and a support rod (1305), one end of each of the self-adaptive oil cylinder (1301) and the leg (1302) is arranged on the base assembly (1) through the respective ear plate seat (1304) and the pin shaft (1303), the other end of the self-adaptive oil cylinder (1301) is connected with the leg (1302) through the pin shaft (1303), the other end of the leg (1302) is provided with the support rod (1305), the support rod (1305) is connected to the leg (1302) through threads, the height of the support rod (1305) is adjustable, one end of the support rod (1305), which is in contact with the ground, is provided with a ball hinge type support plate, the support device can be adapted to and reliably supported on uneven ground to ensure the stability of equipment operation and ensure that each support point has equal support force through a hydraulic system.

9. The coiled tubing operation method without tubing rewinding is characterized by comprising the following steps: with the roller assembly as defined in any one of claims 1 to 8, the axial distance between the fixed support of the base and the mobile support is adjusted to ensure sufficient space for the transport rollers to be housed; hoisting the transport drum between the base fixing support and the movable support, enabling the central axis to be in a horizontal position, translating the transport drum to one side of the base fixing support, and enabling the fixed end support shaft to be inserted into a central hole in one side of the transport drum; inserting a moving end support shaft on a base moving support into a central hole at the other end of the transport roller, and clamping the transport roller; connecting the tail end of the inner high-pressure manifold to the tail end of the movable end supporting shaft; the external high-pressure manifold is connected with pumping equipment, and a complete channel of the external pumping equipment → the external high-pressure manifold → the high-pressure rotary joint → the internal high-pressure manifold → the coiled tubing is established; leading the coiled tubing to an injection head, and installing a corresponding downhole tool; when the coiled tubing is put into a well for operation, the coiled tubing is ensured to have certain tension when taken out of the transportation roller; when the coiled tubing is taken out of the well, the coiled tubing is tightly arranged on the transportation roller.

10. The coiled tubing work method without pipe dumping of claim 9, characterized by the more specific operation steps of:

before operation, adjusting the placing position of a well site, ensuring that the middle plane of the width direction of the transportation roller after the transportation roller is installed is coplanar with the vertical central plane of the injection head and is opposite to a well mouth;

when the coiled tubing is discharged from the well, the coiled tubing is ensured to be arranged on the transportation roller tightly, the positions of the tube arranging device and the guider assembly are adjusted at any time according to the arrangement condition of the coiled tubing, and the coiled tubing is ensured to be arranged on the transportation roller tightly, neatly and regularly.