CA2818286C - Mobile coiled tubing unit - Google Patents
Mobile coiled tubing unit Download PDFInfo
- Publication number
- CA2818286C CA2818286C CA2818286A CA2818286A CA2818286C CA 2818286 C CA2818286 C CA 2818286C CA 2818286 A CA2818286 A CA 2818286A CA 2818286 A CA2818286 A CA 2818286A CA 2818286 C CA2818286 C CA 2818286C
- Authority
- CA
- Canada
- Prior art keywords
- mast
- frame
- reel
- rig
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 5
- 230000000295 complement effect Effects 0.000 claims 2
- 230000033228 biological regulation Effects 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 244000261422 Lysimachia clethroides Species 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000006583 body weight regulation Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
Abstract
The present invention is directed to a mobile coiled tubing unit that has a moveable coiled tubing reel and mast. The apparatus itself can be moved laterally using retractable jacks and hydraulic cylinders. The mast is retractable into a mast sleeve. The movable nature of the elements of the apparatus allow for easier alignment with the well head and balanced transportation. The reel can also be raised to increase clearance to facilitate transportation over rough or uneven terrain.
Description
Mobile Coiled Tubing Unit INVENTOR(S): Dustin Kos, Marlin Belanger, Preston Kurash ASSIGNEE: OPTION INDUSTRIES INC.
DOCKET NO.: 68374.7 Cross-Reference to Related Applications [0001] This application claims the priority benefit of U.S. Provisional Patent Applications 61/657,548 filed June 8, 2012 and 61/701,448 filed September 14, 2012.
Field of the Invention
DOCKET NO.: 68374.7 Cross-Reference to Related Applications [0001] This application claims the priority benefit of U.S. Provisional Patent Applications 61/657,548 filed June 8, 2012 and 61/701,448 filed September 14, 2012.
Field of the Invention
[0002] The present invention is directed to the field of oil and gas drilling and well servicing operations, and in particular to mobile coiled tubing rigs used in oil and gas drilling and well servicing operations.
Background
Background
[0003] Coiled tubing is a continuous string of steel tubing that is rolled onto a spool, and is used for a wide range of oil field services, including but not limited to drilling, logging, cleanouts, fracturing, cementing, underreaming, fishing, completion and production.
[0004] To facilitate coil tubing operations, mobile coiled tubing units, or rigs as they are also known, have been developed that can be easily transported to and from the relevant well site.
The rigs comprise certain conventional elements, namely: a wheeled platform or frame .. forming the base of the rig, a reel to store and dispense the coil tubing string as needed, an injector head that is used to insert and retract the coiled tubing string from the well bore, some form of mast or hoist to elevate the injector above the well head, a control center for the operator, a power source for system power. In many instances, to facilitate ease of transport, the unit comprises a tandem/tri-drive truck and dedicated coil rig chassis such as a flat bed trailer.
Date Recue/Date Received 2020-09-08
The rigs comprise certain conventional elements, namely: a wheeled platform or frame .. forming the base of the rig, a reel to store and dispense the coil tubing string as needed, an injector head that is used to insert and retract the coiled tubing string from the well bore, some form of mast or hoist to elevate the injector above the well head, a control center for the operator, a power source for system power. In many instances, to facilitate ease of transport, the unit comprises a tandem/tri-drive truck and dedicated coil rig chassis such as a flat bed trailer.
Date Recue/Date Received 2020-09-08
[0005] Existing mobile coiled tubing rigs having certain limitations. The various elements comprising the unit, in particular the spool of coiled tubing, are extremely heavy and if they not balanced correctly with respect to each other then the stability of the mobile platform during transport can be greatly impaired. Such instability can compromise the safe handling of the rig, especially during highway driving conditions. Further, on existing mobile coiled tubing rigs the various elements are in fixed positions dictated by the need to have certain required spacing between the coil and the injector during the performance of the down hole work. This fixed positioning of the various elements greatly impairs the mobility of the rig because the weight distribution in uneven and suboptimal to balanced transport and often results in certain axle grouping arising that is over the allowed weight.
[0006] Rough and uneven terrain also poses a challenge to existing mobile units. In particular, the limited clearance between the ground and the bottom of the coiled tubing spool often restricts the ability of the mobile unit to traverse uneven ground. This can be problematic given the remote nature of a great many well sites.
[0007] Another limitation of existing mobile units is the limit placed on mast size. The physical size of the mobile platform that the elements are mounted on are strictly regulated by transportation laws, and this coupled with the need to promote stability in accordance with all applicable transportation regulations, dictates the maximum mast length that can be used.
This frequently results in the use of a mast length that is shorter than the optimal length for coiled tubing operations.
This frequently results in the use of a mast length that is shorter than the optimal length for coiled tubing operations.
[0008] A further limitation of existing mobile coiled tubing units is the difficulty in aligning the injector and lubricators with the well head. Limited movement of the mast results in the need to repeatedly move the entire apparatus using the tractor until alignment is achieved.
Movement of the entire apparatus with a tractor is time consuming and difficult. As a result, coiled tubing operations are frequently conducted without optimal alignment which poses obvious safety risks. Existing mobile units also have limited capacity to readily maintain the alignment of the injector with the well head following the addition and removal of lubricators which alters the relative height and alignment of the injector to the well head.
Movement of the entire apparatus with a tractor is time consuming and difficult. As a result, coiled tubing operations are frequently conducted without optimal alignment which poses obvious safety risks. Existing mobile units also have limited capacity to readily maintain the alignment of the injector with the well head following the addition and removal of lubricators which alters the relative height and alignment of the injector to the well head.
[0009] A further limitation faced by operators of existing mobile coiled tubing units arises by virtue of transportation and hauling regulations and rules that differ across various jurisdictions. In particular, each jurisdiction has particular weight and balance guidelines for trailers and as such, while a mobile unit may comply in one province, state or territory, it may not comply in another. This is problematic during long haul tranSportations, or if the well site straddles the boundary between two jurisdictions. Currently, with certain prior art mobile coiled tubing rigs, the reel has to actually be removed and transported separately because of non-conformity with the relevant transportation rules and regulations,
[0010] What is needed is a mobile coiled tubing rig that mitigates at least some of the limitations of the prior art.
Summary of the Invention
Summary of the Invention
[0011] In one aspect, the invention may comprise a mobile coiled tubing rig comprising:
(a) an elongate frame having a longitudinal axis, the frame being orientated in substantially horizontal plane;
(b) a coiled tubing reel rotatably mounted on the frame, the reel being movable longitudinally along the frame, and vertically in relation to the frame;
(c) a mast assembly comprising a mast pivotally mounted to the frame, the mast being moveable between a first closed position whereby the mast is in a substantially horizontal orientation and a second open position whereby the mast is in a substantially vertical orientation; and (d) an injector mounted on the mast, the injector being selectively movable along the length of the mast.
In one embodiment, the mast assembly may comprise a mast base which is moveable longitudinally along the frame. The mast assembly may also comprise a mast sleeve within which the mast may telescopically extend or retract. The rig may further comprising a plurality of retractable support jack assembly, each support jack assembly comprising a support jack and a telescoping horizontal cylinders affixed to the frame, the support jack assemblies being moveable between a horizontal storage position and a deployed position wherein the support jacks engage the ground beneath the frame, and wherein the telescoping horizontal cylinders may be used to actuate lateral movement of the frame relative the support jacks when in the deployed position.
(a) an elongate frame having a longitudinal axis, the frame being orientated in substantially horizontal plane;
(b) a coiled tubing reel rotatably mounted on the frame, the reel being movable longitudinally along the frame, and vertically in relation to the frame;
(c) a mast assembly comprising a mast pivotally mounted to the frame, the mast being moveable between a first closed position whereby the mast is in a substantially horizontal orientation and a second open position whereby the mast is in a substantially vertical orientation; and (d) an injector mounted on the mast, the injector being selectively movable along the length of the mast.
In one embodiment, the mast assembly may comprise a mast base which is moveable longitudinally along the frame. The mast assembly may also comprise a mast sleeve within which the mast may telescopically extend or retract. The rig may further comprising a plurality of retractable support jack assembly, each support jack assembly comprising a support jack and a telescoping horizontal cylinders affixed to the frame, the support jack assemblies being moveable between a horizontal storage position and a deployed position wherein the support jacks engage the ground beneath the frame, and wherein the telescoping horizontal cylinders may be used to actuate lateral movement of the frame relative the support jacks when in the deployed position.
[0012] In one embodiment, the reel assembly may comprise a vertical lift mechanism comprising a horizontal pivot and a hydraulic cylinder to pivotably lift or lower the reel assembly. The reel assembly may be mounted to a slide track on the frame, and is pushed or pulled along the slide track by a hydraulic cylinder. The reel assembly may comprises a reel drive comprising a rack and pinion drive driven by a closed-loop hydraulic motor.
[0013] In one embodiment, the mast assembly may comprise a pair of mast sleeves and a pair of parallel masts, interconnected by at least one cross member, wherein one end of the at least one cross member is pivotably attached to one mast and the other end is removably latched to the other mast.
[0014] In another aspect, the invention may comprise a mobile coiled tubing rig comprising:
(a) an elongate frame having a longitudinal axis, the frame being orientated in a substantially horizontal plane;
(b) a coiled tubing reel assembly mounted on the frame;
(c) a mast assembly comprising a mast pivotally mounted to the frame, the mast being moveable between a first closed position whereby the mast is in a substantially horizontal orientation and a second open position whereby the mast is in a substantially vertical orientation, wherein the mast assembly comprises a mast base which is moveable longitudinally along the frame; and (d) an injector mounted on the mast, the injector being selectively movable along the length of the mast.
In one embodiment, the mast assembly may comprise a mast sleeve within which the mast may telescopically extend or retract. The reel assembly may be movable longitudinally along the frame, and vertically in relation to the frame.
Brief Description of the Drawings
(a) an elongate frame having a longitudinal axis, the frame being orientated in a substantially horizontal plane;
(b) a coiled tubing reel assembly mounted on the frame;
(c) a mast assembly comprising a mast pivotally mounted to the frame, the mast being moveable between a first closed position whereby the mast is in a substantially horizontal orientation and a second open position whereby the mast is in a substantially vertical orientation, wherein the mast assembly comprises a mast base which is moveable longitudinally along the frame; and (d) an injector mounted on the mast, the injector being selectively movable along the length of the mast.
In one embodiment, the mast assembly may comprise a mast sleeve within which the mast may telescopically extend or retract. The reel assembly may be movable longitudinally along the frame, and vertically in relation to the frame.
Brief Description of the Drawings
[0015] In the drawings, like elements are assigned like reference numerals.
The drawings are not necessarily to scale, with the emphasis instead placed upon the principles of the present invention. Additionally, each of the embodiments depicted are but one of a number of possible arrangements utilizing the fundamental concepts of the present invention. The drawings are briefly described as follows:
The drawings are not necessarily to scale, with the emphasis instead placed upon the principles of the present invention. Additionally, each of the embodiments depicted are but one of a number of possible arrangements utilizing the fundamental concepts of the present invention. The drawings are briefly described as follows:
[0016] Figure 1 is a side view of one embodiment of the apparatus of the present invention coupled to a tractor, booster and jeep.
[0017] Figure 2 is a side view of one embodiment of the apparatus of the present invention coupled to a tractor, booster and jeep, and having a control cabin.
[0018] Figure 3 is a side view of one embodiment of the apparatus of the present invention with the mast disassembled and removed.
[0019] Figure 4 is a top view of one embodiment of the apparatus of the present invention coupled to a tractor.
[0020] Figure 5 is a view of one embodiment of the apparatus of the present invention with the mast not raised. Figure 5A is a detail view on one portion of Figure 5.
[0021] Figure 6 is a side view of one embodiment of the apparatus of the present invention with the mast raised.
[0022] Figure 7 is a perspective view of one embodiment of the apparatus of the present invention with the mast raised.
[0023] Figure 8 is another perspective view of one embodiment of the apparatus of the present invention with the mast raised.
[0024] Figure 9 is an elevated side view of one embodiment of the apparatus of the present invention with a control cabin and without a mast,
[0025] Figure 10 is a view of a reel assembly of one embodiment of the apparatus of the present invention. Figure 10A shows a view of the reel assembly and showing the reel axle.
Figure 10B shows the reel assembly apart from the rig. Figure 10C shows the reel axle clamp.
Figure 10D shows the end of the reel axle.
Figure 10B shows the reel assembly apart from the rig. Figure 10C shows the reel axle clamp.
Figure 10D shows the end of the reel axle.
[0026] Figure 11 is a view of the reel drive system of one embodiment of the apparatus of the present invention.
[0027] Figure 12 is a partial side view of one embodiment of the apparatus of the present invention with the mast raised and the sliding base in the rear most position,
[0028] Figure 13 is a partial side view of one embodiment of the apparatus of the present invention with the mast raised and the sliding base in the forward most position.
[0029] Figure 14 is a partial elevated rear view of one embodiment of the apparatus of the present invention with the mast raised.
[0030] Figure 15 is an elevated side view of one embodiment of the apparatus of the present invention with the mast raised.
[0031] Figure 16 is an elevated front view of one embodiment of the apparatus of the present invention with the mast raised. Figure 16A is a detailed view of a portion of Figure 16 showing a partial view of the cradle and mast members of one embodiment of the apparatus of the present invention.
[0032] Figure 17 is a view of the level wind apparatus of one embodiment of the apparatus of the present invention. Figures 17A is a view of the encoder of the level wind assembly of one embodiment of the apparatus of the present invention. Figure 17B is a view of the level wind screw and worm gear drive box of the level wind assembly of one embodiment of the apparatus of the present invention. Figure 17C is a view of the tubing guide of the level wind assembly of one embodiment of the apparatus of the present invention.
[0033] Figure 18 is a diagrammatic depiction of a reel and level wind assembly of one embodiment of the apparatus of the present invention.
= Detailed Description of Embodiments
= Detailed Description of Embodiments
[0034] The invention relates to a mobile coiled tubing unit. When describing the present invention, all terms not defined herein have their common art-recognized meanings. To the extent that the following description is of a specific embodiment or a particular use of the invention, it is intended to be illustrative only, and not limiting of the claimed invention. The following description is intended to cover all combinations of features, alternatives, modifications and equivalents that are included in the spirit and scope of the invention, as defined in the appended claims.
[0035] In this description the terms "coiled tubing", "coiled tubing string"
shall be used interchangeably but in each instance shall mean the continuous steel tube pipe used in oil and gas drilling, production and maintenance operations.
shall be used interchangeably but in each instance shall mean the continuous steel tube pipe used in oil and gas drilling, production and maintenance operations.
[0036] The present invention is directed to a mobile coiled tubing unit, or rig as it is also known, having a moveable coiled tubing reel or a moveable mast, or both a moveable reel and mast. In one embodiment, the unit is configured for transport using a moveable coiled tubing reel and a moveable mast that is retractable into a mast sleeve to achieve dimensional requirements for transport. The apparatus itself can be moved laterally using retractable jacks and hydraulic cylinders for well alignment and moving from one well to the next. In one embodiment, the mast base moves forward and back to achieve well head alignment and injector alignment in various positions without need of repositioning or altering rig heights.
The reel can also be raised to increase clearance to facilitate transportation over rough or uneven terrain, thereby allowing the rig to accommodate a larger reel.
The reel can also be raised to increase clearance to facilitate transportation over rough or uneven terrain, thereby allowing the rig to accommodate a larger reel.
[0037] Figure 1 depicts one embodiment of a rig (50) configured as a wheeled trailer coupled to a tractor (52). The rig comprises a substantially rectangular horizontal frame (12) having a longitudinal axis. The various mechanical elements of the rig (50) are mounted on or to the frame (12). The rectangular frame (12) has a front end (11) that is closest to the tractor during transportation and a rear end (13) that is furthest from the tractor (52) during transportation, and two longer sides connecting the two ends (11, 13). Although the embodiments described herein depict the rig (50) as a wheeled trailer, it can be understood that other suitable transportation means may be employed. For example, the apparatus could be skid mounted, or track systems could be used instead of wheels.
[0038] The frame (12) comprises cross members (17) spanning the trailer in an orientation that is perpendicular to the longitudinal axis. In one embodiment, the frame members are reinforced or have greater structural strength in the vicinity of the reel.
[0039] The frame (12) has a plurality of ground-engaging wheels (14) proximate to its rear end (13) and a hitch (18) proximate to its front end (11). In one embodiment, the hitch (18) consists of a king pin that mates with fifth wheel mounted on the tractor (50). The hitch (18) and wheels (14) allow the apparatus (50) to be towed by a tractor (52) in a conventional manner. In one embodiment, a booster component attached to the back of the frame and/or a jeep disposed between the truck and the frame may be used to increase the capacity of the combined truck and trailer by distributing weight to the extra wheels. They can be used separately or together as needed in order to help the unit conform to highway weight regulations. During operation, the rig (50) may be decoupled from the tractor (52) and stabilized in a horizontal orientation using retractable hydraulic rig jacks (9) located proximate to each corner of the rectangular frame (12). Additional jack stands (9A) may be provided for use when the rig is not in use and not coupled to a tractor or jeep.
[0040] In one embodiment, a control cabin (16) is mounted on the frame in position proximate to the front end (11). The control cabin (16) contains all of the controls and instrumentation necessary to operate the apparatus (50). The control cabin may be provided on a separate trailer unit, or the unit may be remotely controlled.
[0041] A coiled tubing reel (46) is mounted on an axle (48) extending the width of the frame (12) and attached at each end to a reel drive frame assembly (66) mounted on the long sides of the frame (12). In one embodiment, the reel is approximately longitudinally centred on the frame. In the embodiment shown in the Figures, the reel axle is driven by hydraulic motors (70) through a pinion gear box (64) and a drive adapter plate (68), all of which is mounted on the reel drive frame assembly (66). The drive adapter plate has a keyed opening which mates with an axle adapter plate (69) fixed to the end of the axle (48). This configuration permits the reel axle (48) to slide into the drive adapter plates (68) during assembly. The adapter plates are fixed together with a drive clamp (67) which encircles the adapter plates (68, 69).
The drive clamp may comprise of two semi-circular portions which are hinged together at one end, and which bolt together at the other.
100421 In one embodiment, a closed-loop hydraulic motor (70) is used to control the torque being placed on the reel drive system, and tension of tubing between the reel and injector.
100431 In one embodiment of the present invention, the reel assembly comprises a level wind assembly (71). The level wind assembly (71) positions the tubing (not shown) as it is being wound onto the reel (46). The level wind assembly (71) is comprised of a tubing guide (75), a level wind screw (72), and a hydraulic worm drive gear box (74), a controller and an encoder (73). The lateral position of the tubing guide (75) is controlled by the controller which determines the rotation of the level wind screw (72). In one embodiment, the level wind screw is driven through an enclosed hydraulic drive gear box (74), although other drive mechanisms such as a conventional chain and sprocket drive system may also be suitable.
The worm drive gear box system reduces moving parts subject to wear and improves control of the tubing position on the reel. Tubing size adjustments can be made remotely with the controller so no mechanical changes need to be made. An encoder (73) accurately determines the lateral position of the tubing guide and the information is sent to the controller that controls the hydraulic worm drive (74).
[00441 The reel drive frame assembly (66) and the axle (48) and the reel (46) mounted thereon, are movable backwards and forwards along slide tracks (23) mounted on the frame (12). Accordingly, the reel (46) may be moved to a position more proximate to the front end (11), or more proximate to the rear end (13) as desired by the operator, or for transport purposes. The longitudinal actuation of the reel assembly (66) may accomplished with a pair of hydraulic cylinders (22).
[0045] The reel may also be raised vertically by pivoting the reel drive frame assembly (66) upwards about a pivoted connection (27) between the reel drive frame assembly (66) and the slide track (23), as shown in Figure 7. As such, the reel (46) may be elevated relative to the frame, which may create greater clearance between the ground and the lowest point of the reel (46). The pivoting actuation of the reel assembly (66) may be accomplished using more hydraulic cylinders (26), as may be seen in Figure 10.
[0046] The ability to move the reel (46) both longitudinally and vertically may provide several advantages. First, the reel (46) can be raised to increase clearance thereby facilitating transportation of the rig (50) over rough or uneven terrain. Second, the reel (46) when loaded with coiled tubing is extremely heavy, and the longitudinal and vertical movement of the reel (46) can be used to balance the load so that the apparatus (50) is more stable during transportation. For example, the reel (46) may be moved towards the second end (13) during transport and towards the first end (11) during operation. Furthermore, different jurisdictions have differing weight balance guidelines, rules and regulations for mobile coiled tubing rigs, and thus the ability to move the reel (46) may allow conformity with the rules of the relevant jurisdiction.
[0047] Mounted at the rear end (13) of the frame (12) is a mast assembly comprising a mast base (1). A mast sleeve (7) is pivotally mounted on the mast base (1). A mast (4) is slidably mounted within the mast sleeve (7) and has an upper end (38) and a lower end (40). A
hydraulic cylinder (6) is used to extend or retract the mast (4) within the sleeve (7). In one embodiment, the sleeve is open at the bottom end, so that the bottom of the mast may protrude when in a lowered position. In one embodiment, the mast (4) may comprises two parallel masts each having its own mast base (1) and sleeve (7), interconnected by cross members (34) and a base cross member (1A). In one embodiment, one or more of the cross members (34) may be removably latched at one end and may be pivoted out of the way using a cylinder (35) to allow the cradle (60) to pass, as shown in Figures 13 and 14.
[0048] A pair of hydraulic cylinders (44) actuate the mast sleeve and mast between a transport position where the mast is substantially horizontal as shown in Figure 1, and an operable position where the mast sleeve (7) and mast (4) are substantially upright as shown in Figure 6.
An elevated support structure (42) located proximate to the front end (11) of the frame supports the mast (4) when in its closed transport position.
[0049] A cradle (60) supports the injector (5) and goose neck (20) and is slidably moveable along the length of the mast (4). During transportation, the cradle (60), injector (5) and goose neck (20) are lowered to the lower end (40) of the mast (4). In one embodiment, the goose neck (20) is comprised of hinged parts to allow it to be transported in a folded configuration.
To facilitate coiled tubing operations, when the mast is raised, in one embodiment, the cradle (60) is raised up the mast (4) by hydraulic motors driving pinion gears that engage a gear rack on each side of the mast (not shown). When the mast is raised to an operating position, and the cradle (60) is raised towards the upper end (38) of the mast (4), lubricators (28) and a blow out preventer (32) may be suspended beneath the injector (5) and are connected to the well head (30) in conventional manner.
[0050] The mast base (1), and correspondingly the mast sleeve (7) and the mast itself (4), are movable along the longitudinal axis (A) of the apparatus (50) by means of a sliding track (3) and a pair of hydraulic cylinders (2). In one embodiment, the mast base (1) can be extended such that it overhangs the rear end (13) of the frame (12) as shown in Figure 12 or can be moved to a position more proximate to the front end (11) as shown in Figure 13. The ability to selectively move the mast (4) longitudinally facilitates balancing of the apparatus (50) for transportation in the same manner as described above for the reel (46) but also facilitates movement of the mast to align the injector (34) and lubricators (28) with the well head (30) without having to move the entire apparatus (50) and without having to use the tractor (52) to move the apparatus (50).
[0051] In one embodiment, retractable hydraulic rig jack assemblies comprising rig jacks (9) are located at each corner of the rectangular frame (12), and each rig jack (9) is hingedly connected to a telescoping cylinder (10) that moves horizontally in and out of the frame (12), When the apparatus is in a desired position, the telescoping cylinders (10) extend the jacks outwards. The jacks (9) are then deployed downwards to support the weight of the apparatus.
As a result, the telescoping nature of the telescoping cylinders (10) allows lateral movement of the entire apparatus (50) when the weight of the apparatus (50) is supported by the jacks (9).
The operator can utilize this lateral movement to align the injector (5) and lubricators (28) with the well head (30). During transportation, the retractable jacks (9) fold up and insert into the telescoping cylinders (10) and the telescoping cylinders (10) retract into the frame (12).
[0052] Accordingly, it can be understood that after the apparatus (50) has been positioned proximate to the well head (30) using the tractor, the cylinders (10) and jacks (9) are deployed to stabilize the apparatus (50) and the tractor (52) is decoupled. The reel (46) is moved into its operational position using the associated cylinders (22) and the mast is raised into its substantially vertical operational position using associated cylinders (44).
The operator is then able to utilize the longitudinal movement of the mast (4) on the sliding tracks (3), and the lateral movement of the apparatus (50) using the cylinders (10) and jacks (9), the height of the mast (4) using the cylinders (6) to raise and lowers the mast within the sleeve (7), and the ability to raise and lower the injector (5) up and down the mast (4) in the cradle (60) to precisely align the injector (5) and the lubricators (28) with the well head (30). As lubricators (28) are added or removed depending on the nature of the coiled tubing operation, the operator may utilize the same movement capabilities to facilitate alignment of the injector (5) with the well head (30). The ability to alter the relative position of the various components of the apparatus, and the ability to move the apparatus (50) laterally, greatly reduces the time and effort required to achieve alignment in comparison to existing rigs, [0053] During transportation, the mast (4) is fully retracted into the sleeve (7) thereby ensuring that the upper end (38) of the mast (4) does not protrude beyond the tractor (52).
During operation, the mast (4) can be extended from the sleeve (7) to give the mast (4) additional height. Also, the operator can also retract or extend the mast (4) incrementally to assist with alignment of the injector (5) with the well head (30) and allows the operator to run the injector (5) in a relatively tall or short configuration.
[0054] In one embodiment, for smaller units the mast (4) may be transported separately and assembled and installed on the rig at site. As such, the rig would transport the reel and the injector between sites, as shown in Figure 9.
[0055] In another embodiment of the present invention, the control cabin may be a remote location on a separate trailer unit, In a further embodiment, the separate trailer unit may also comprise of any or all of a hydraulic accumulator for the blow out preventers, a HPU
(Hydraulic Power Unit), a control cabin, a fuel tank, a generator and a tool room and a tool room, [0056] Further, in the embodiments described above, hydraulic cylinders are utilized to move various components of the rig such as the reel (46), the mast base (1), mast (4), telescoping cylinders (10) and support jacks (9). One skilled in the art will understand that there may be other suitable mechanical means to achieve such movement such as rack and pinion drives with electric or hydraulic motors, or chain drives or cable drives, without deviating from the scope and spirit of the present invention.
[0057] As will be apparent to those skilled in the art, various modifications, adaptations and variations of the foregoing specific disclosure can be made without departing from the scope of the invention claimed herein.
The drive clamp may comprise of two semi-circular portions which are hinged together at one end, and which bolt together at the other.
100421 In one embodiment, a closed-loop hydraulic motor (70) is used to control the torque being placed on the reel drive system, and tension of tubing between the reel and injector.
100431 In one embodiment of the present invention, the reel assembly comprises a level wind assembly (71). The level wind assembly (71) positions the tubing (not shown) as it is being wound onto the reel (46). The level wind assembly (71) is comprised of a tubing guide (75), a level wind screw (72), and a hydraulic worm drive gear box (74), a controller and an encoder (73). The lateral position of the tubing guide (75) is controlled by the controller which determines the rotation of the level wind screw (72). In one embodiment, the level wind screw is driven through an enclosed hydraulic drive gear box (74), although other drive mechanisms such as a conventional chain and sprocket drive system may also be suitable.
The worm drive gear box system reduces moving parts subject to wear and improves control of the tubing position on the reel. Tubing size adjustments can be made remotely with the controller so no mechanical changes need to be made. An encoder (73) accurately determines the lateral position of the tubing guide and the information is sent to the controller that controls the hydraulic worm drive (74).
[00441 The reel drive frame assembly (66) and the axle (48) and the reel (46) mounted thereon, are movable backwards and forwards along slide tracks (23) mounted on the frame (12). Accordingly, the reel (46) may be moved to a position more proximate to the front end (11), or more proximate to the rear end (13) as desired by the operator, or for transport purposes. The longitudinal actuation of the reel assembly (66) may accomplished with a pair of hydraulic cylinders (22).
[0045] The reel may also be raised vertically by pivoting the reel drive frame assembly (66) upwards about a pivoted connection (27) between the reel drive frame assembly (66) and the slide track (23), as shown in Figure 7. As such, the reel (46) may be elevated relative to the frame, which may create greater clearance between the ground and the lowest point of the reel (46). The pivoting actuation of the reel assembly (66) may be accomplished using more hydraulic cylinders (26), as may be seen in Figure 10.
[0046] The ability to move the reel (46) both longitudinally and vertically may provide several advantages. First, the reel (46) can be raised to increase clearance thereby facilitating transportation of the rig (50) over rough or uneven terrain. Second, the reel (46) when loaded with coiled tubing is extremely heavy, and the longitudinal and vertical movement of the reel (46) can be used to balance the load so that the apparatus (50) is more stable during transportation. For example, the reel (46) may be moved towards the second end (13) during transport and towards the first end (11) during operation. Furthermore, different jurisdictions have differing weight balance guidelines, rules and regulations for mobile coiled tubing rigs, and thus the ability to move the reel (46) may allow conformity with the rules of the relevant jurisdiction.
[0047] Mounted at the rear end (13) of the frame (12) is a mast assembly comprising a mast base (1). A mast sleeve (7) is pivotally mounted on the mast base (1). A mast (4) is slidably mounted within the mast sleeve (7) and has an upper end (38) and a lower end (40). A
hydraulic cylinder (6) is used to extend or retract the mast (4) within the sleeve (7). In one embodiment, the sleeve is open at the bottom end, so that the bottom of the mast may protrude when in a lowered position. In one embodiment, the mast (4) may comprises two parallel masts each having its own mast base (1) and sleeve (7), interconnected by cross members (34) and a base cross member (1A). In one embodiment, one or more of the cross members (34) may be removably latched at one end and may be pivoted out of the way using a cylinder (35) to allow the cradle (60) to pass, as shown in Figures 13 and 14.
[0048] A pair of hydraulic cylinders (44) actuate the mast sleeve and mast between a transport position where the mast is substantially horizontal as shown in Figure 1, and an operable position where the mast sleeve (7) and mast (4) are substantially upright as shown in Figure 6.
An elevated support structure (42) located proximate to the front end (11) of the frame supports the mast (4) when in its closed transport position.
[0049] A cradle (60) supports the injector (5) and goose neck (20) and is slidably moveable along the length of the mast (4). During transportation, the cradle (60), injector (5) and goose neck (20) are lowered to the lower end (40) of the mast (4). In one embodiment, the goose neck (20) is comprised of hinged parts to allow it to be transported in a folded configuration.
To facilitate coiled tubing operations, when the mast is raised, in one embodiment, the cradle (60) is raised up the mast (4) by hydraulic motors driving pinion gears that engage a gear rack on each side of the mast (not shown). When the mast is raised to an operating position, and the cradle (60) is raised towards the upper end (38) of the mast (4), lubricators (28) and a blow out preventer (32) may be suspended beneath the injector (5) and are connected to the well head (30) in conventional manner.
[0050] The mast base (1), and correspondingly the mast sleeve (7) and the mast itself (4), are movable along the longitudinal axis (A) of the apparatus (50) by means of a sliding track (3) and a pair of hydraulic cylinders (2). In one embodiment, the mast base (1) can be extended such that it overhangs the rear end (13) of the frame (12) as shown in Figure 12 or can be moved to a position more proximate to the front end (11) as shown in Figure 13. The ability to selectively move the mast (4) longitudinally facilitates balancing of the apparatus (50) for transportation in the same manner as described above for the reel (46) but also facilitates movement of the mast to align the injector (34) and lubricators (28) with the well head (30) without having to move the entire apparatus (50) and without having to use the tractor (52) to move the apparatus (50).
[0051] In one embodiment, retractable hydraulic rig jack assemblies comprising rig jacks (9) are located at each corner of the rectangular frame (12), and each rig jack (9) is hingedly connected to a telescoping cylinder (10) that moves horizontally in and out of the frame (12), When the apparatus is in a desired position, the telescoping cylinders (10) extend the jacks outwards. The jacks (9) are then deployed downwards to support the weight of the apparatus.
As a result, the telescoping nature of the telescoping cylinders (10) allows lateral movement of the entire apparatus (50) when the weight of the apparatus (50) is supported by the jacks (9).
The operator can utilize this lateral movement to align the injector (5) and lubricators (28) with the well head (30). During transportation, the retractable jacks (9) fold up and insert into the telescoping cylinders (10) and the telescoping cylinders (10) retract into the frame (12).
[0052] Accordingly, it can be understood that after the apparatus (50) has been positioned proximate to the well head (30) using the tractor, the cylinders (10) and jacks (9) are deployed to stabilize the apparatus (50) and the tractor (52) is decoupled. The reel (46) is moved into its operational position using the associated cylinders (22) and the mast is raised into its substantially vertical operational position using associated cylinders (44).
The operator is then able to utilize the longitudinal movement of the mast (4) on the sliding tracks (3), and the lateral movement of the apparatus (50) using the cylinders (10) and jacks (9), the height of the mast (4) using the cylinders (6) to raise and lowers the mast within the sleeve (7), and the ability to raise and lower the injector (5) up and down the mast (4) in the cradle (60) to precisely align the injector (5) and the lubricators (28) with the well head (30). As lubricators (28) are added or removed depending on the nature of the coiled tubing operation, the operator may utilize the same movement capabilities to facilitate alignment of the injector (5) with the well head (30). The ability to alter the relative position of the various components of the apparatus, and the ability to move the apparatus (50) laterally, greatly reduces the time and effort required to achieve alignment in comparison to existing rigs, [0053] During transportation, the mast (4) is fully retracted into the sleeve (7) thereby ensuring that the upper end (38) of the mast (4) does not protrude beyond the tractor (52).
During operation, the mast (4) can be extended from the sleeve (7) to give the mast (4) additional height. Also, the operator can also retract or extend the mast (4) incrementally to assist with alignment of the injector (5) with the well head (30) and allows the operator to run the injector (5) in a relatively tall or short configuration.
[0054] In one embodiment, for smaller units the mast (4) may be transported separately and assembled and installed on the rig at site. As such, the rig would transport the reel and the injector between sites, as shown in Figure 9.
[0055] In another embodiment of the present invention, the control cabin may be a remote location on a separate trailer unit, In a further embodiment, the separate trailer unit may also comprise of any or all of a hydraulic accumulator for the blow out preventers, a HPU
(Hydraulic Power Unit), a control cabin, a fuel tank, a generator and a tool room and a tool room, [0056] Further, in the embodiments described above, hydraulic cylinders are utilized to move various components of the rig such as the reel (46), the mast base (1), mast (4), telescoping cylinders (10) and support jacks (9). One skilled in the art will understand that there may be other suitable mechanical means to achieve such movement such as rack and pinion drives with electric or hydraulic motors, or chain drives or cable drives, without deviating from the scope and spirit of the present invention.
[0057] As will be apparent to those skilled in the art, various modifications, adaptations and variations of the foregoing specific disclosure can be made without departing from the scope of the invention claimed herein.
Claims (25)
1. A mobile coiled tubing rig comprising:
(a) an elongate frame having a longitudinal axis, the frame being orientated in a substantially horizontal plane;
(b) a mast assembly comprising a mast pivotally mounted to the frame, the mast being moveable between a substantially horizontal orientation and a substantially vertical orientation;
(c) a coiled tubing reel assembly mounted on the frame, the reel assembly being movable either longitudinally or vertically, or both longitudinally and vertically, in relation to the frame, whereby the reel assembly is adjustable in position in relation to the mast in the substantially horizontally orientation; and (d) an injector mounted on the mast, the injector being selectively movable along the length of the mast.
(a) an elongate frame having a longitudinal axis, the frame being orientated in a substantially horizontal plane;
(b) a mast assembly comprising a mast pivotally mounted to the frame, the mast being moveable between a substantially horizontal orientation and a substantially vertical orientation;
(c) a coiled tubing reel assembly mounted on the frame, the reel assembly being movable either longitudinally or vertically, or both longitudinally and vertically, in relation to the frame, whereby the reel assembly is adjustable in position in relation to the mast in the substantially horizontally orientation; and (d) an injector mounted on the mast, the injector being selectively movable along the length of the mast.
2. The rig of claim 1 wherein the mast comprises a mast base which is moveable longitudinally along the frame.
3. The rig of claim 1 or 2 wherein the mast assembly comprises a mast sleeve within which the mast may slide to extend or retract the mast.
4. The rig of claim 1 further comprising a plurality of retractable support jack assembly, each support jack assembly comprising a support jack and a telescoping horizontal cylinders affixed to the frame, the support jack assemblies being moveable between a horizontal storage position and a deployed position wherein the support jacks engage the ground beneath the frame, and wherein the telescoping horizontal cylinders may be used to actuate lateral movement of the frame relative the support jacks when in the deployed position.
5. The rig of any one of claims 1 to 4 wherein the reel assembly is movable vertically in relation to the frame.
Date Recue/Date Received 2020-09-08
Date Recue/Date Received 2020-09-08
6. The rig of claim 1 wherein the reel assembly comprises a vertical lift mechanism comprising a horizontal pivot and a hydraulic cylinder to pivotably lift or lower the reel assembly for moving the reel assembly vertically in relation to the frame.
7. The rig of any one of claims 1 to 6 wherein the reel assembly is movable longitudinally in relation to the frame.
8. The rig of claim 7 wherein the reel assembly is mounted to a slide track on the frame, and is pushed or pulled along the slide track by a hydraulic cylinder for moving the reel assembly longitudinally in relation to the frame.
9. The rig of claim 1 wherein the reel assembly comprises a reel drive comprising a rack and pinion drive driven by a hydraulic motor.
10. The rig of claim 9 wherein the reel drive comprises a drive adapter plate mounted to the drive and a complementary reel adapter plate mounted to a reel axle respectively, and further comprising a reel drive clamp which encircles the drive adapter plate and reel adapter plate.
11. The rig of claim 1 wherein the mast comprises a pair of parallel masts, interconnected by at least one cross member, wherein one end of the at least one cross member is pivotably attached to one mast and the other end is removably latched to the other mast.
12. The rig of claim 1 which is a wheeled trailer.
13. A mobile coiled tubing rig comprising:
(a) an elongate frame having a longitudinal axis, the frame being orientated in a substantially horizontal plane;
(b) a coiled tubing reel assembly mounted on the frame;
(c) a mast assembly comprising a mast pivotally mounted to the frame, the mast being moveable between a substantially horizontal orientation and a substantially vertical orientation, wherein the mast assembly comprises a mast base which is Date Recue/Date Received 2020-09-08 moveable longitudinally along the frame, whereby the mast in the substantially horizontal orientation is adjustable in position in relation to the reel assembly; and (d) an injector mounted on the mast, the injector being selectively movable along the length of the mast.
(a) an elongate frame having a longitudinal axis, the frame being orientated in a substantially horizontal plane;
(b) a coiled tubing reel assembly mounted on the frame;
(c) a mast assembly comprising a mast pivotally mounted to the frame, the mast being moveable between a substantially horizontal orientation and a substantially vertical orientation, wherein the mast assembly comprises a mast base which is Date Recue/Date Received 2020-09-08 moveable longitudinally along the frame, whereby the mast in the substantially horizontal orientation is adjustable in position in relation to the reel assembly; and (d) an injector mounted on the mast, the injector being selectively movable along the length of the mast.
14. The rig of claim 13 wherein the mast assembly comprises a mast sleeve within which the mast may slide to extend or retract the mast.
15. The rig of claim 13 wherein the reel assembly is movable longitudinally along the frame, and vertically in relation to the frame.
16. The rig of claim 13 further comprising a plurality of retractable support jack assembly, each support jack assembly comprising a support jack and a telescoping horizontal cylinders affixed to the frame, the support jack assemblies being moveable between a horizontal storage position and a deployed position wherein the support jacks engage the ground beneath the frame, and wherein the telescoping horizontal cylinders may be used to actuate lateral movement of the frame relative the support jacks when in the deployed position.
17. The rig of claim 15 wherein the reel assembly comprises a vertical lift mechanism comprising a horizontal pivot and a hydraulic cylinder to pivotably lift or lower the reel assembly for moving the reel assembly vertically in relation to the frame.
18. The rig of claim 15 wherein the reel assembly is mounted to a slide track on the frame, and is pushed or pulled along the slide track by a hydraulic cylinder for moving the reel assembly longitudinally in relation to the frame.
19. The rig of claim 15 wherein the reel assembly comprises a reel drive comprising a rack and pinion drive driven by a hydraulic motor.
20. The rig of claim 19 wherein the reel drive comprises a drive adapter plate mounted to the drive and a complementary reel adapter plate mounted to a reel axle respectively, and further comprising a reel drive clamp which encircles the drive adapter plate and reel adapter plate.
Date Recue/Date Received 2020-09-08
Date Recue/Date Received 2020-09-08
21. The rig of claim 13 wherein the mast comprises a pair of parallel masts, interconnected by at least one cross member, wherein one end of the at least one cross member is pivotably attached to one mast and the other end is removably latched to the other mast.
22. A method of adjusting a balance of a mobile coiled tubing rig for transport, wherein the rig comprises a coiled tubing reel assembly and a mast mounted on an elongate frame having a longitudinal axis, wherein the mast is moveable between a substantially horizontal orientation and a substantially vertical orientation, the method comprising moving either the reel assembly or the mast, or both the reel assembly and the mast, longitudinally in relation to the frame, to thereby adjust the reel assembly in position in relation to the mast in the substantially horizontally orientation.
23. The method of claim 22 comprising moving the reel assembly longitudinally in relation to the frame.
24. The method of any one of claims 22 to 23 comprising moving the mast longitudinally in relation to the frame.
25. The method of any one of claims 22 to 24 further comprising the step of moving the reel assembly vertically in relation to the frame.
Date Recue/Date Received 2020-09-08
Date Recue/Date Received 2020-09-08
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261657548P | 2012-06-08 | 2012-06-08 | |
| US61/657,548 | 2012-06-08 | ||
| US201261701448P | 2012-09-14 | 2012-09-14 | |
| US61/701,448 | 2012-09-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2818286A1 CA2818286A1 (en) | 2013-12-08 |
| CA2818286C true CA2818286C (en) | 2021-05-25 |
Family
ID=49753600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2818286A Expired - Fee Related CA2818286C (en) | 2012-06-08 | 2013-06-10 | Mobile coiled tubing unit |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20130341001A1 (en) |
| CA (1) | CA2818286C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9587450B2 (en) * | 2014-08-08 | 2017-03-07 | Premier Coil Solutions, Inc. | Injector head tilt mechanism |
| US9624741B2 (en) * | 2014-08-26 | 2017-04-18 | Raptor Rig Ltd. | Apparatus and methods for downhole tool deployment for well drilling and other well operations |
| US9316067B1 (en) * | 2015-04-28 | 2016-04-19 | National Oilwell Varco, Lp | Coiled tubing injector handler |
| US9988864B2 (en) * | 2016-07-26 | 2018-06-05 | Premier Coil Solutions, Inc. | Transport trailer reel and injector shift for maximizing coiled tubing load distribution |
| CA3049693A1 (en) | 2017-01-18 | 2018-07-26 | Minex Crc Ltd | Mobile coiled tubing drilling apparatus |
| CN110300834B (en) | 2017-01-18 | 2022-04-29 | 米尼克斯Crc有限公司 | Movable coiled tubing drilling device |
| US10662719B2 (en) * | 2017-01-30 | 2020-05-26 | National Oilwell Varco, L.P. | Telescopic deployment mast |
| CN109138897B (en) * | 2018-09-26 | 2023-10-17 | 廊坊景隆重工机械有限公司 | Well head centering device and well repair equipment with same |
| WO2020242685A1 (en) * | 2019-05-24 | 2020-12-03 | National Oilwell Varco, L.P. | Coiled tubing trailer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6003598A (en) * | 1998-01-02 | 1999-12-21 | Cancoil Technology Corporation | Mobile multi-function rig |
| US7484831B2 (en) * | 2004-05-27 | 2009-02-03 | Silverbrook Research Pty Ltd | Printhead module having horizontally grouped firing order |
| US8752617B2 (en) * | 2005-07-01 | 2014-06-17 | Reel Revolution Holdings Limited | Method and apparatus for drilling and servicing subterranean wells with rotating coiled tubing |
| US7810554B2 (en) * | 2005-06-17 | 2010-10-12 | Xtreme Coil Drilling Corp. | System, method and apparatus for conducting earth borehole operations |
| US7185708B2 (en) * | 2005-06-24 | 2007-03-06 | Xtreme Coil Drilling Corp. | Coiled tubing/top drive rig and method |
| US7798237B2 (en) * | 2007-05-07 | 2010-09-21 | Nabors Alaska Drilling, Inc. | Enclosed coiled tubing rig |
-
2013
- 2013-06-10 CA CA2818286A patent/CA2818286C/en not_active Expired - Fee Related
- 2013-06-10 US US13/913,976 patent/US20130341001A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CA2818286A1 (en) | 2013-12-08 |
| US20130341001A1 (en) | 2013-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2818286C (en) | Mobile coiled tubing unit | |
| US7357616B2 (en) | Method and apparatus for transporting oil rig | |
| CA2824828C (en) | A drilling rig and a method for moving a drilling rig | |
| CA2353581C (en) | Trailer mounted coiled tubing rig | |
| CN103321581B (en) | Inland rig | |
| US4265304A (en) | Coiled tubing apparatus | |
| US4249600A (en) | Double cylinder system | |
| US20090321135A1 (en) | Rocket rig drilling apparatus | |
| US8591143B1 (en) | Fragmented slab lifting apparatus and method | |
| CA2895305C (en) | Transportable drilling rig system | |
| NO336001B1 (en) | Portable drilling rig and method for assembling a drilling rig at a drilling site. | |
| US10858893B2 (en) | Laterally movable mobile well servicing units and methods of use | |
| US8939199B2 (en) | System for repositioning a coiled tubing tensioner | |
| US20140265526A1 (en) | Saw and drill machine for paved slabs | |
| US11402053B2 (en) | Vehicle support structure for a worksite | |
| CN104071228A (en) | Derrick transport trailer | |
| US9587356B2 (en) | Roadworthy railroad ballast tamper apparatus | |
| KR102013575B1 (en) | Hydraulic Gantry Crane | |
| WO2018093259A1 (en) | Mobile land rig for drilling and/or servicing a well | |
| US11597435B2 (en) | Drilling rig | |
| EP0906241B1 (en) | A straddle carrier | |
| CN211874373U (en) | Vehicle-mounted workover rig driller operating platform ladder stand | |
| CN204137117U (en) | A kind of derrick transtainer | |
| EP1598236A1 (en) | Spooler for coiled tubing | |
| CA2993846C (en) | Laterally movable mobile well servicing units and methods of use |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20180611 |
|
| MKLA | Lapsed |
Effective date: 20220610 |