CN212671608U - Wellhead oil pipe moving device - Google Patents

Abstract

The utility model provides a well head oil pipe mobile device belongs to petroleum machinery equipment technical field. Comprises a base, a bracket and an oil pipe moving assembly. The oil pipe moving assembly comprises a guide rail, a mechanical arm and a trolley, a first end of the mechanical arm is connected with the trolley, a second end of the mechanical arm is connected with the mechanical arm, the trolley is slidably mounted on the guide rail, and the guide rail is fixedly connected with the support. The oil pipe moving device can push and pull the oil pipe and the transfer elevator in any required horizontal direction around a wellhead, occupies small space, and meets the operation requirements of lifting and lowering the oil pipe in various well sites.

Description

Wellhead oil pipe moving device

Technical Field

The disclosure relates to the technical field of petroleum machinery equipment, in particular to an oil pipe moving device.

Background

In the process of well repairing and oil testing operations of oil and gas fields, an oil pipe needs to be lifted out of or lowered into an oil well. The manual operation of lifting or lowering the oil pipe consumes long time and has high labor intensity, and the personnel damage to operators is easily caused in the operation process. In order to reduce the labor intensity of operators and the safety risk in the operation process, a mechanical device is generally adopted to push a wellhead oil pipe which needs to be pulled down.

In the related art, a hydraulic cylinder is generally adopted to drive a manipulator to push an oil pipe, and the whole set of wellhead oil pipe moving device comprises a mechanical arm, a mechanical arm outer sleeve, a manipulator and a base. Wherein, arm one end and manipulator are connected, but the other end and arm overcoat telescopic connection to the extending direction of manipulator and arm is the same. There are generally two types of mounting methods: a base is installed at the tail part of a well repairing machine and can be carried along with a vehicle. When the well site oil pipe pulling and conveying machine is used, the well site oil pipe pulling and conveying machine and the workover rig are respectively installed on two sides of a well head, the well site oil pipe pulling and conveying machine, the well head and the workover rig are located on the same straight line, an oil pipe is pulled down through the workover rig, the oil pipe pulled out from the well is pushed onto a well site oil pipe transferring machine pulley through a manipulator of a well head oil pipe moving device, or the oil pipe is pulled to the well head from the well site oil pipe pulling and conveying machine. Another wellhead tubing movement apparatus mounts a base at a front end of a wellsite tubing tractor and is transportable with the wellsite tubing tractor. When the device is used, the hydraulic cylinder drives the manipulator to stretch back and forth, so that the movement of the lower oil pipe from a wellhead to the well site oil pipe pulling and conveying machine is completed.

Although the two wellhead tubing lifting and lowering moving technologies have the advantages of fast moving and small occupied space above the wellhead, the first mode needs to ensure that the well site tubing pulling and conveying machine, the wellhead and the workover rig are on the same straight line when in work, so that the two wellhead tubing lifting and lowering moving technologies are not suitable for oil-water well operation in small well sites and cluster well sites; although the second mode can pull and send the oil pipe to any horizontal direction around the well mouth, the adaptability of well site operation is improved, but the mass of the well mouth oil pipe moving device is large, and after the well mouth oil pipe moving device is connected with a well site oil pipe pulling and sending machine, the defects of light weight and difficult lifting are shown.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a wellhead oil pipe moving device, which can push and pull an oil pipe and transfer an elevator in any required horizontal direction around a wellhead, occupies small space and meets the operation requirements of lifting and lowering the oil pipe in various well sites.

The technical scheme is as follows:

the embodiment of the present disclosure provides an oil pipe mobile device, including:

a base, a bracket and an oil pipe moving component,

the base having a connection structure thereon for connection with a blowout preventer;

the support is connected between the base and the oil pipe moving assembly in the vertical direction;

the oil pipe moving assembly comprises a guide rail, a mechanical arm and a trolley, wherein the first end of the mechanical arm is connected with the trolley, the second end of the mechanical arm is connected with the mechanical arm, the trolley is slidably mounted on the guide rail, and the guide rail is fixedly connected with the support.

Optionally, the connecting structure includes a first mounting hole, a mounting ring and a gland, the first mounting hole is located in the middle of the base, a first bolt hole corresponding to a bolt hole of a flange of the blowout preventer in a one-to-one manner is formed in the mounting ring, a second bolt hole and a second mounting hole are formed in the gland, the second bolt hole corresponds to the first bolt hole in a one-to-one manner and is arranged around the second mounting hole, at least one of the surfaces of the mounting ring opposite to the gland has a limiting protrusion, and the base is rotatably sleeved on the limiting protrusion through the first mounting hole and is at least partially clamped between the mounting ring and the gland.

Optionally, the support comprises at least two support legs, and two ends of the guide rail are fixedly connected with one of the at least two support legs.

Optionally, the support includes first supporting leg, second supporting leg, third supporting leg and many connecting rods, first supporting leg the second supporting leg with the both ends fixed connection of guide rail, the third supporting leg with first supporting leg with the second supporting leg sets up and all lies in each other interval with one side of first mounting hole, first supporting leg the second supporting leg with the third supporting leg passes through between two liang connecting rod fixed connection.

Optionally, the oil pipe moving assembly further comprises a driving device and a chain transmission mechanism, the driving device is arranged on the guide rail, and the driving device is connected with the trolley through the chain transmission mechanism.

Optionally, the chain transmission mechanism includes a first sprocket, a second sprocket and a chain, the first sprocket and the second sprocket are respectively disposed at two ends of the guide rail, the chain is wound around the first sprocket and the second sprocket, the trolley is fixedly connected to the chain, and the driving device is in transmission connection with any one of the first sprocket and the second sprocket.

Optionally, the oil pipe moving assembly further includes a first chain box and a second chain box, the first chain wheel is located in the first chain box, the second chain wheel is located in the second chain box, and the first chain box and the second chain box are respectively connected to two ends of the guide rail.

Optionally, the tubing movement assembly further comprises a locking member, and at least one of the first sprocket and the second sprocket is configured to be slidably connected to the rail along a length direction of the rail and locked to the rail by the locking member.

Optionally, the trolley is provided with a through hole, the trolley is sleeved on the guide rail through the through hole, and a roller is arranged on the side wall, opposite to the guide rail, in the through hole.

Optionally, the manipulator comprises a lifting ring control claw for clamping a lifting ring and an oil pipe control claw for clamping an oil pipe, and the oil pipe control claw is located in the middle of the lifting ring control claw.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

the connecting structure on the base is connected with a blowout preventer of an oil well, the oil pipe moving assembly and the base are arranged at a certain distance through the support, and the driller remote control hydraulic tongs are convenient to break out or make up the oil pipe and the pipe column in the well at the well mouth. When moving an oil pipe, the manipulator is aligned to the front end of a slideway of a well site oil pipe pulling and conveying machine, a trolley in an oil pipe moving assembly is sleeved on a guide rail in a sliding mode, the manipulator is connected with the trolley through a mechanical arm, after the manipulator clamps and supports the oil pipe or a hanging ring, a driller can drive the trolley to slide along the guide rail through remote control to drive the mechanical arm and the manipulator, the oil pipe or the hanging ring clamped and supported by the manipulator moves above a well head along with the hanging ring, and the purpose that the oil pipe after the hanging ring or the shackle is moved to the front end of the well site oil pipe pulling and conveying machine or the hanging ring or the oil pipe is reversely pulled to the well. Through with well head oil pipe mobile device direct mount on the preventer of oil well, can realize pushing and pulling oil pipe and transporting the elevator in arbitrary required horizontal direction according to the orientation of the space adjustment manipulator of well site, occupation space is little, satisfies various well site oil pipe operation needs of getting up and down.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a wellhead tubing movement device provided by an embodiment of the present disclosure;

FIG. 2 is a schematic illustration of a connection configuration of a base and a blowout preventer provided by embodiments of the present disclosure;

FIG. 3 is a schematic structural diagram of a connection structure provided in an embodiment of the present disclosure;

FIG. 4 is a schematic illustration of a partial structure of a wellhead tubing movement device provided by an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of another wellhead tubing movement apparatus provided by embodiments of the present disclosure;

FIG. 6 is a schematic view of a cart according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of a matching structure of a trolley and a guide rail provided by the embodiment of the disclosure;

fig. 8 is a schematic structural diagram of a manipulator provided in the embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a wellhead tubing movement device during operation according to an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a wellhead tubing moving device provided by an embodiment of the disclosure. As shown in fig. 1, the wellhead tubing movement device comprises a base 1, a support 2 and a tubing movement assembly 3. The base 1 is provided with a connecting structure 11 (see fig. 2) for connecting with the blowout preventer m, the support 2 is connected between the base 1 and the oil pipe moving assembly 3 in the vertical direction, the oil pipe moving assembly 3 comprises a guide rail 31, a manipulator 32, a manipulator 33 and a trolley 34, a first end 331 of the manipulator 33 is connected with the trolley 34, a second end 332 of the manipulator 33 is connected with the manipulator 32, the trolley 34 is slidably mounted on the guide rail 31, and the guide rail 31 is fixedly connected with the support 2.

In the disclosed embodiment, the wellhead tubing moving device can be connected with the blowout preventer m through the connecting structure 11 on the base 1, and the tubing a (see fig. 9) can be lifted out of or lowered into the blowout preventer m during lifting. In the oil pipe moving assembly 3, a manipulator 32 for gripping the oil pipe a is connected with a first end 331 of a mechanical arm 33, a second end of the mechanical arm 33 is connected with a trolley 34, and the trolley 34 is mounted on a guide rail 31 and can slide on the guide rail 31, so as to drive the mechanical arm 33 and the manipulator 32 connected with the mechanical arm 33 to move relative to the wellhead. Usually, two single-arm hoisting rings are connected below an elevator, the elevator is connected below the two single-arm hoisting rings, the oil pipe moving assembly 3 can transfer the elevator and can be matched with the elevator to realize the tripping of an oil pipe a and the pushing and pulling of the oil pipe a, for example, when the oil pipe a taken out of a well head from a well string is transferred, the oil pipe a is firstly lifted out of the well head through the elevator, the oil pipe a is clamped and supported through a manipulator 32, then the oil pipe a and the well string are separated by tripping, a driller slides along a guide rail 31 through a control trolley 34, the tripped oil pipe a can be pushed onto a pulley of an oil pipe well site pulling machine, or the oil pipe a is pulled to the well head from the oil pipe well site pulling machine to carry out the tripping construction of the oil pipe a; the manipulator 32 can also directly clamp and hold the hoisting ring, the driller slides along the guide rail 31 through the control trolley 34, and the hoisting ring is pushed by the mechanical arm 33 and the manipulator 32 to drive the elevator to the front end (namely, the end close to the wellhead) of the well site oil pipe pulling machine to grab and release the oil pipe a, or the elevator is reversely pulled to the wellhead, so that the elevator is buckled on the uppermost oil pipe a of the well string to carry out the next process.

The utility model provides a well head oil pipe mobile device is connected with the preventer of petroleum well through connection structure on the base, sets up oil pipe moving assembly and base interval certain distance through the support, makes things convenient for driller remote control hydraulic tong to break out or make up at the well head to oil pipe and interior tubular column. When moving an oil pipe, the manipulator is aligned to the front end of a slideway of a well site oil pipe pulling and conveying machine, a trolley in an oil pipe moving assembly is sleeved on a guide rail in a sliding mode, the manipulator is connected with the trolley through a mechanical arm, after the manipulator clamps and supports the oil pipe or a hanging ring, a driller can drive the trolley to slide along the guide rail through remote control to drive the mechanical arm and the manipulator, the oil pipe or the hanging ring clamped and supported by the manipulator moves above a well head along with the hanging ring, and the purpose that the oil pipe after the hanging ring or the shackle is moved to the front end of the well site oil pipe pulling and conveying machine or the hanging ring or the oil pipe is reversely pulled to the well. Through with well head oil pipe mobile device direct mount on the preventer of oil well, can realize pushing and pulling oil pipe and transporting the elevator in arbitrary required horizontal direction according to the orientation of the space adjustment manipulator of well site, occupation space is little, satisfies various well site oil pipe operation needs of getting up and down.

Illustratively, in the disclosed embodiment, the height of the support 2 is typically set to 1.0 to 1.8m, which ensures that there is sufficient room at the wellhead for transporting the elevator and making-up or breaking-out the tubing a during its removal from or lowering into the well.

Exemplarily, the connection mode between the guide rail 31 and one end of the support 2 may be welding, the connection mode between the other end of the support 2 and the base 1 may also be welding, the oil pipe moving assembly 3, the support 2 and the base 1 are connected by adopting the welding mode, the process is simple, the mechanical strength is high, and the stability of the wellhead oil pipe moving device can be improved.

Illustratively, blowout preventers are used to close a wellhead when necessary during operations such as oil testing, well workover, and the like, to prevent blowout accidents. The structure of the blowout preventer m can refer to the related art, and the embodiments of the present application are not described in detail herein.

FIG. 2 is a schematic diagram of a connection structure of a base and a blowout preventer provided by an embodiment of the disclosure. Fig. 3 is a schematic structural diagram of a connection structure provided in an embodiment of the present disclosure. As shown in fig. 1 to 3, the connection structure 11 includes a first mounting hole 111, a mounting ring 112 and a gland 113, the first mounting hole 111 is located in the middle of the base 1, the mounting ring 112 has a first bolt hole 1121 corresponding to the bolt hole m2 of the flange of the blowout preventer m in a one-to-one manner, the gland 113 has a second bolt hole 1131 and a second mounting hole 1132, the second bolt hole 1131 corresponds to the first bolt hole 1121 in a one-to-one manner and is disposed around the second mounting hole 1132, at least one of the opposite surfaces of the mounting ring 112 and the gland 113 has a limit protrusion 114, and the base 1 is rotatably fitted over the limit protrusion 114 through the first mounting hole 111 and is at least partially sandwiched between the mounting ring 112 and the gland 113. Illustratively, in the embodiment of the disclosure, a plurality of flange bolt holes m2 are provided on the flange of the blowout preventer m, in order to realize the connection between the base 1 and the blowout preventer m, the first bolt holes 1121 on the mounting ring 112 are aligned with the flange bolt holes m2, the first mounting holes 111 on the base 1 are sleeved on the limiting protrusions 114 on the gland 113, the mounting ring 112 is connected with the base 1, the part of the base 1 is clamped between the mounting ring 112 and the gland 113, the second mounting holes 1132 on the gland 113 are aligned with the first mounting holes 111, the second bolt holes 1131 are aligned with the first bolt holes 1121, finally the bolts sequentially pass through the second bolt holes 1131, the first bolt holes 1121 and the flange m2, the base 1 is clamped and fixed on the flange of the blowout preventer m through the gland 113 and the mounting ring 112, the structure is simple, the installation is convenient.

Illustratively, the mounting ring 112 may further include a third bolt hole 1122 thereon, and the gland 113 may further include a fourth bolt hole 1133 matching the third bolt hole 1122 thereon. When the connecting structure 11 is assembled, the base 1 is firstly sleeved on the limiting protrusion 114 on the gland 113, then the mounting ring 112 is mounted on the base 1, so that a part of the base 1 is clamped between the mounting ring 112 and the gland 113, the mounting ring 112 and the gland 113 are fixedly connected by using bolts through the third bolt holes 1122 and the fourth bolt holes 1133, and the base 1 clamped between the mounting ring 112 and the gland 113 can rotate around the limiting protrusion 114. The mounting ring 112 and the gland 113 are fixedly connected through the bolts, so that the connecting structure 11 and the base 1 are integrally connected in the process of hoisting to the wellhead blowout preventer, hoisting is convenient, the steps of assembling the connecting structure 11 and the base 1 on the wellhead blowout preventer are effectively reduced, and the safety and the site construction efficiency of the wellhead oil pipe moving device are further improved.

For example, in the embodiment of the present disclosure, after the mounting ring 112 and the gland 113 are fixedly connected through the third bolt holes 1122 and the fourth bolt holes 1133 by using bolts, the contact surfaces of the mounting ring 112 and the gland 113 may also be fixed by welding, so as to further improve the connection strength between the mounting ring 112 and the gland 113.

Illustratively, in the embodiment of the present disclosure, when the orientation of the manipulator 32 needs to be adjusted, after the bolts for fixing the gland 113, the mounting ring 112, and the flange of the blowout preventer m are loosened, the base 1 may be rotated according to actual needs of a well site, so that the base rotates around the limit protrusion 114 and further rotates relative to the blowout preventer m, and when the manipulator 32 is adjusted to a desired orientation, the bolts are reused to tighten the gland 113, the mounting ring 112, and the flange of the blowout preventer m, so that the base 1 can be fixed.

It should be noted that, in the embodiment of the present disclosure, the structure in which the limiting protrusion 114 is provided on the gland 113 is merely an example. In other possible implementations, the limiting protrusion 114 may also be disposed on the mounting ring 112, as long as the base 1 can be sleeved on the limiting protrusion 114 through the first mounting hole 111, and can rotate relative to the limiting protrusion 114 to adjust the orientation of the manipulator 32, which is not limited in this disclosure.

Illustratively, the mounting ring 112 primarily serves to space the surface of the base 1 from the surface of the flange of the blowout preventer m, preventing wear to the surfaces of the base 1 and the flange of the blowout preventer m when the base 1 is adjusted for rotation, to improve the service life of the wellhead tubing movement and the blowout preventer m.

Illustratively, when the base 1 is clamped and fixed on the flange of the blowout preventer m through the gland 113 and the mounting ring 112 by bolts sequentially passing through the second bolt holes 1131, the first bolt holes 1121 and the bolt holes m2 of the flange, 3 to 4 bolts are generally used to ensure the stable connection of the wellhead tubing moving device and the blowout preventer m. In other possible implementations, in order to improve the connection strength of the wellhead tubing moving device and the blowout preventer m, 5, 6 or more bolts may also be used for the fixed connection, which is not limited by the embodiment of the disclosure.

Optionally, the support frame 2 comprises at least two support legs 21, and both ends of the guide rail 31 are fixedly connected with one support leg 21 of the at least two support legs 21. Because well head oil pipe mobile device passes through support 2 and removes oil pipe moving assembly 3 and base 1, perhaps base 1 interval certain distance sets up, when oil pipe moving assembly 3 removed oil pipe a or elevator, support 2 need guarantee the joint strength and the connection stability between base 1 and the oil pipe moving assembly 3, avoid going on because of rocking the influence construction. Exemplarily, in the embodiment of the present disclosure, the support 2 composed of at least two support legs 21 is used to support the oil pipe moving assembly 3 and the base 1, and each of the two ends of the guide rail 31 is provided with one support leg 21 and the guide rail 31, and the two support legs 21 support the two ends of the guide rail 31 respectively, so that the support 2 can support the oil pipe moving assembly 3 more stably, and the guide rail 31 is prevented from shaking in the working process, which affects the manipulator 32 to clamp and hold the oil pipe a in the center or clamp the lifting ring to drive the lifting clamp to reach the specified position to grab and release the oil pipe, thereby further improving the working efficiency of the wellhead oil pipe moving device.

Optionally, the bracket 2 includes a first supporting leg 211, a second supporting leg 212, a third supporting leg 213 and a plurality of connecting rods 214, the two ends of the first supporting leg 211, the second supporting leg 212 and the guide rail 31 are fixedly connected, the third supporting leg 213 and the first supporting leg 211 and the second supporting leg 212 are arranged at an interval and are all located on the same side of the first mounting hole 111, and the first supporting leg 211, the second supporting leg 212 and the third supporting leg 213 are fixedly connected through the connecting rods 214.

In the embodiment of the present disclosure, the oil pipe moving assembly 3 fixed on the base 1 is supported by the support 2 composed of three support legs of the first support leg 211, the second support leg 212 and the third support leg 213, and the connecting rod 214 for increasing the connection strength and stability is provided between the first support leg 211, the second support leg 212 and the third support leg 213, so that the first support leg 211, the second support leg 212 and the third support leg 213 are fixedly connected to each other. Because triangle-shaped has stability, can effectively improve the joint strength and the stability of support 2, prevent that guide rail 31 from taking place to rock in the course of the work, influence manipulator 32 press from both sides and hold up oil pipe a centering or press from both sides and hold up rings and drive the elevator and reach the assigned position and grab and put oil pipe, further improved well head oil pipe mobile device's work efficiency.

Optionally, the oil pipe moving assembly 3 may further include a driving device 38 and a chain transmission mechanism 3a, the driving device 38 is disposed on the guide rail 31, and the driving device 38 is connected with the trolley 34 through the chain transmission mechanism 3 a.

The chain transmission mechanism 3a includes a first chain wheel 35, a second chain wheel 36 and a chain 37, the first chain wheel 35 and the second chain wheel 36 are respectively disposed at two ends of the guide rail 31, the chain 37 is wound around the first chain wheel 35 and the second chain wheel 36, the trolley 34 is fixedly connected with the chain 37, and the driving device 38 is in transmission connection with any one of the first chain wheel 35 and the second chain wheel 36.

In the embodiment of the present disclosure, when the driller slides on the guide rail 31 through the remote control trolley 34 to drive the mechanical arm 33 and the mechanical arm 32 to clamp, hold, and push and pull the oil pipe a and the hoisting ring, the phenomenon that the trolley 34 is not smooth to move, does not reach, or slides over a desired position is easily caused by factors such as friction and vibration. By arranging the first chain wheel 35 and the second chain wheel 36 at two ends of the guide rail 31 and connecting the chain 37 fixedly connected with the trolley 34 to the first chain wheel 35 and the second chain wheel 36 in a winding manner, after the manipulator 32 clamps the oil pipe a or the suspension ring under remote control, the driller controls the first chain wheel 35 or the second chain wheel 36 to rotate by using the driving device 38, and drives the trolley 34 to slide on the guide rail 31 through the chain 37. The chain transmission mode is adopted to control the movement of the trolley 34, the transmission is accurate, the phenomenon of elastic sliding or slipping is not easy to occur, the trolley 34 can be accurately controlled to move to a target position, and the working efficiency of the wellhead oil pipe moving device is improved.

Alternatively, the driving device 38 may be disposed on the guide rail 31 and drivingly connected to any one of the first sprocket 35 and the second sprocket 36.

Illustratively, in the embodiment of the present disclosure, the driving device 38 may be a hydraulic motor, and a rotating shaft of the hydraulic motor is coaxially connected to the first chain wheel 35, the first chain wheel 35 serves as a driving wheel, and the second chain wheel 36 serves as a driven wheel. When the oil pipe a or the elevator needs to be moved, the driller can drive the first chain wheel 35 to rotate by remotely controlling the rotation of the hydraulic motor, so as to drive the trolley 34 to move forwards and backwards.

It should be noted that, in the embodiment of the present disclosure, the first sprocket 35 is only used as an example to be in transmission connection with the rotating shaft of the hydraulic motor, and in other possible implementation manners, the second sprocket 36 may also be used as a driving wheel to be in transmission connection with the rotating shaft of the hydraulic motor, as long as the movement of the trolley 34 can be accurately controlled, which is not limited in the embodiment of the present disclosure.

Optionally, the oil pipe moving assembly 3 further comprises a locking member 4, and at least one of the first chain wheel 35 and the second chain wheel 36 is configured to be slidably connected to the rail 31 along the length direction of the rail 31, and is locked on the rail 31 by the locking member 4. In the chain transmission mechanism 3a including the first sprocket 35, the second sprocket 36, and the chain 37, after a long period of use, the engagement between the chain 37 and the first sprocket 35 and the second sprocket 36 may become loose, and it is necessary to readjust the engagement connection portion between the chain 37 and the first sprocket 35 and the second sprocket 36. In the embodiment of the present disclosure, the length direction of the rail 31 is the extending direction of the rail 31, and at least one of the first chain wheel 35 and the second chain wheel 36 is configured to be slidably connected with the rail 31 along the length direction of the rail 31, and is locked on the rail 31 by the locking member 4. When the engagement between the chain 37 and the first and second sprockets 35, 36 may be loose, the chain 37 wound around the first and second sprockets 35, 36 may be tensioned by unlocking the locker 4, finely adjusting the first or second sprocket 35, 36 in the longitudinal direction of the rail 31, and locking the locker 4. When the chain 37 needs to be maintained and replaced, the chain 37 can be loosened by adjusting one of the first chain wheel 35 and the second chain wheel 36 to the direction close to the other one, so that the chain is convenient to take down, and the maintenance efficiency of the wellhead oil pipe moving device is improved.

FIG. 4 is a schematic partial structural view of a wellhead tubing movement device provided by an embodiment of the present disclosure. Fig. 4 shows the second sprocket 36 as an example. The guide rail 31 is provided with a mounting seat 315, the mounting seat 315 includes two strip-shaped connecting blocks 3151 and baffle plates 3152, wherein the two connecting blocks 3151 are respectively located on two sides of the second chain wheel 36 in the axial direction of the second chain wheel 36, the plate surfaces of the baffle plates 3152 are fixedly connected with the two connecting blocks 3151 and are perpendicular to the guide rail 31, and the two connecting blocks 3151 are provided with sliding grooves 315a extending in the same direction as the guide rail 31. The second sprocket 36 is rotatably mounted on the connecting shaft 361, and the connecting shaft 361 is mounted in the sliding groove 315a with both ends of the connecting shaft 361 extending out of the sliding groove 315 a. In the embodiment of the present disclosure, the locking member 4 includes two connecting bolts 41, two adjusting nuts 42, two first locking nuts 43, and two second locking nuts 44, wherein one end of the two connecting bolts 41 has a connecting plate 411, and after the two connecting plates 411 are sleeved at both ends of the connecting shaft 361, the two connecting plates 411, and the two connecting blocks 3151 are fixedly connected by tightening the two first locking nuts 43. The two connecting bolts 41 are perpendicular to the baffle 3152, and the other ends of the two connecting bolts 41 penetrate through the baffle 3152 and are fixedly connected with the baffle 3152 through the adjusting nut 42 and the second locking nut 44, wherein the adjusting nut 42 is positioned between the baffle 3152 and the second locking nut 44. When the second sprocket 36 needs to be finely adjusted along the length direction of the guide rail 31, the two second locking nuts 44 and the adjusting nuts 42 are sequentially unscrewed, the two first locking nuts 43 are unscrewed again, fine adjustment of the position of the second sprocket 36 is realized by pulling the connecting shaft 361 to slide in the sliding groove 315a, and after the adjustment is in place, the two first locking nuts 43, the two adjusting nuts 42 and the two second locking nuts 44 are sequentially locked, so that the locking of the locking member 4 is completed.

FIG. 5 is a schematic diagram of another wellhead tubing movement device provided by embodiments of the present disclosure. As shown in fig. 1 and 5, the oil pipe moving assembly 3 further includes a first chain case 39a and a second chain case 39b, the first chain wheel 35 is located in the first chain case 39a, the second chain wheel 36 is located in the second chain case 39b, the first chain case 39a and the second chain case 39b are respectively located at two ends of the guide rail 31, that is, the first chain case 39a is located at one end of the guide rail 31 where the first chain wheel 35 is located, and the first chain case 39a covers the outside of the first chain wheel 35 and is fixedly connected with the guide rail 31; the second chain case 39b is located at one end of the guide rail 31 where the second chain wheel 36 is located, and the second chain case 39b covers the outside of the second chain wheel 36 and is fixedly connected with the guide rail 31. Since the movement of the trolley 34 is driven by a chain transmission, the chain 37 usually needs to be maintained by adding lubricating oil at the meshing part with the first chain wheel 35 and the second chain wheel 36 to reduce friction and prolong service life. And in the course of operation of well head oil pipe mobile device, be located first sprocket 35 and the second sprocket 36 at guide rail 31 both ends when rotating, lubricating oil causes because of the effect of centrifugal force easily and splashes, is unfavorable for driller's safe operation, also can cause the waste to lubricating oil simultaneously. In the embodiment of the present disclosure, by providing the first chain case 39a and the second chain case 39b at the positions corresponding to the first chain wheel 35 and the second chain wheel 36 at the two ends of the guide rail 31, respectively, wrapping the first chain wheel 35 in the first chain case 39a, and wrapping the second chain wheel 36 in the second chain case 39b, the first chain case 39a and the second chain case 39b can block and collect splashed lubricating oil when the wellhead oil pipe moving device operates. When the wellhead oil pipe moving device stops working or is maintained and repaired, the lubricating oil collected from the first chain box 39a and the second chain box 39b can be collected and reused, and the safety and the environmental protection performance of the wellhead oil pipe moving device are improved.

Exemplarily, with reference to fig. 3, in the embodiment of the present disclosure, the mounting base 315 further includes a supporting frame 3153 for connecting with the first chain case 39a or the second chain case 39 b. Taking the second chain case 39b as an example, after the second sprocket 36 is completely covered with the second chain case 39b, the second chain case 39b is fixedly connected to the support frame 3153 by bolts, and the second chain case 39b is mounted on the guide rail 31.

Fig. 6 is a schematic structural diagram of a cart provided in the embodiments of the present disclosure. Fig. 7 is a schematic view of a matching structure of a trolley and a guide rail provided by the embodiment of the disclosure. As shown in fig. 6 and 7, the trolley 34 has a through hole 341, the trolley 34 is sleeved on the guide rail 31 through the through hole 341, and a roller 342 is disposed on a side wall of the through hole 341 opposite to the guide rail 31.

Exemplarily, in the embodiment of the present disclosure, the guide rail 31 has a first plate surface 311, a second plate surface 312, and a first side surface 313 and a second side surface 314 connecting the first plate surface 311 and the second plate surface 312, a through hole 341 is provided on the trolley 34, the trolley 34 is sleeved on the guide rail 31 through the through hole 341, and a roller 342 is provided on a groove wall of the through hole 341 opposite to the first plate surface 311, the second plate surface 312, the first side surface 313, and the second side surface 314 of the guide rail 31. When the carriage 34 is assembled with the rail 31, the installation is completed by inserting the through hole 341 into the rail 31 by aligning the inner wall of the through hole 341 with the first plate 311, the second plate 312, the first side surface 333, and the second side surface 334 of the rail 31. And through all set up gyro wheel 342 in through-hole 341 on with first face 311, second face 312, first side 313 and fourth side 314 relative wall, make between every contact surface of dolly 34 and guide rail 31 all can carry out relative motion through gyro wheel 342, convert sliding friction into rolling friction, reduced the frictional force between dolly 34 and the guide rail 31, the slip of dolly 34 on guide rail 31 is more smooth and easy, has further improved well head oil pipe mobile device's work efficiency.

For example, in the embodiment of the present disclosure, the trolley 34 may further include a connecting boss 343, the connecting boss 343 and the through hole 341 are respectively located on two opposite sides of the trolley 34, the connecting boss 343 has a second through hole 3431, an opening direction of the second through hole 3431 is the same as a length direction of the guide rail 31, and the chain 37 may pass through the second through hole 3431 and be fixedly connected to an inner side wall of the connecting boss 343 through a bolt.

Fig. 8 is a schematic structural diagram of a manipulator provided in the embodiment of the present disclosure. As shown in fig. 8, the manipulator 32 includes a lifting ring control claw 321 for gripping a lifting ring and an oil pipe control claw 322 for gripping an oil pipe, and the oil pipe control claw 322 is located in the middle of the lifting ring control claw 321. When the oil pipe at the wellhead is pulled out, the elevator is usually used for fixing the oil pipe, the oil pipe is lifted out of the wellhead by the elevator, and then the oil pipe is subjected to shackle (make-up) and push-pull movement.

For example, in the process of using the workover rig to lift and drop an oil pipe, two single-arm hoisting rings are generally used to connect a workover rig crane hook with an elevator for suspending the oil pipe, and the hoisting ring control claw 321 is used for clamping the single-arm hoisting ring above the elevator. The oil pipe control claw 322 is used for clamping an oil pipe a, and two clamping jaws of the oil pipe control claw 322 are positioned in the middle of the two hoisting ring control claws 321. Through setting up rings control claw 321 and oil pipe control claw 322 simultaneously on manipulator 32, can press from both sides oil pipe a and rings with the control claw that removes the in-process and use the correspondence under oil pipe a plays, realize pushing away to oil pipe a, centering and to the transportation of elevator, improved well head oil pipe mobile device's practicality.

Exemplarily, in the embodiment of the present disclosure, the oil pipe control claw 322 includes a seat plate 3221 and two limit plates 3222, the seat plate 3221 is provided with a U-shaped open groove 3223 for clamping an oil pipe a, two sides of the seat plate 3221 respectively extend upward to form ear plates 32211, a front end of the limit plate 3222 is rotatably connected to a rear end of the seat plate 3221, a rear end of the limit plate 3222 is connected to the ear plates 32211 through a spring 3224, and the two limit plates 3222 are configured such that when the spring 3224 is in a natural state, a distance between the rear ends of the two limit plates 3222 is smaller than a diameter of the clamped oil pipe. When the oil pipe a enters the U-shaped open groove 3223, the oil pipe a firstly struts the two limiting plates 3222, and after the oil pipe a completely enters the U-shaped open groove 3223, the spring 3224 exerts an acting force on the oil pipe a through the limiting plates 3222, so that the two limiting plates 3222 clamp the oil pipe a, and the oil pipe a is prevented from rebounding and sliding out of the U-shaped open groove 3223.

Exemplarily, in the embodiment of the present disclosure, the slinger control claw 321 is provided with an arc-shaped limiting groove 3211 for clamping the single-arm slinger, and the arc-shaped limiting grooves 3211 on the two slinger control claws 321 are arranged oppositely.

For example, the oil pipe moving assembly 3 may further include limit sensors disposed at two ends of the guide rail and a positioning sensor (not shown in the figure) disposed at a position aligned with the wellhead in the middle of the guide rail, both the limit sensor and the positioning sensor are electrically and hydraulically connected to the driving device 38, and when the trolley 34 touches the limit sensor, the limit sensor sends a signal to the control device of the driving device 38 to cut off an oil path of the driving device 38, so as to stop the vehicle; when the trolley 34 drives the U-shaped open slot 3223 of the manipulator 32 to coincide with the center of the wellhead, the positioning sensor sends a signal to the control device of the driving device 38, an oil path of the driving device is cut off, and stopping is realized, so that the manipulator 32 clamps the oil pipe and automatically centers the oil pipe with the upper end of the pipe column in the well when the oil pipe is fed, and the working efficiency of the wellhead oil pipe moving device is further improved.

Fig. 8 is a schematic structural diagram of a mobile device in operation according to an embodiment of the present disclosure. For ease of understanding, the operation of the wellhead tubing movement device provided by the embodiments of the present disclosure is specifically described below with reference to fig. 1 to 8.

S1: and (4) lifting the oil pipe a.

When the oil pipe a is lifted from the well, the uppermost oil pipe a to be lifted out of the well pipe column is firstly held by the lifting clamp, and after the oil pipe a is lifted to a proper height, the lifted oil pipe a is broken off.

When the break-out is complete, the driller remotely controls the hydraulic motor, i.e., the drive unit 38, to rotate in a forward direction to move the manipulator 32 forward (i.e., toward the wellsite tubing tractor) via the chain 37. When the robot 32 moves forward to its tubing control gripper 322 gripping tubing a, the control elevator lifts tubing a slightly away from the uppermost tubing a of the well string. Tubing a is then pushed onto the wellsite tubing tractor by tubing control dogs 322, the elevator is separated from tubing a, and tubing a is transported away from the wellhead. Thereafter, the driller control driver 38 rotates in reverse to drive the manipulator 32 backward via the chain 37, so that the pipe control pawl 322 releases the pipe a and returns to the initial position. And then, the driller lowers the elevator to a height lower than that of the manipulator 32, controls the driving device 38 to rotate forwards again, drives the manipulator 32 to move forwards through the chain 37 until the lifting ring control claw 321 of the manipulator 32 clamps the two single-arm lifting rings on the elevator, drives the elevator to push away from the wellhead by about 50cm through the lifting rings, opens the elevator and releases the oil pipe. Finally, the driller controls the driving device 38 to rotate reversely, drives the manipulator 32 to move backwards through the chain 37, and pulls the elevator back to the wellhead with the help of the manipulator 32 to be buckled on the body of the uppermost oil pipe a of the well string. At this point, the tripping of the first tubing a out of the well is complete. The above operations can be repeated subsequently to realize the lifting of the rest of the oil pipe a.

S2: and (4) lowering the oil pipe a.

When an oil pipe a is put into the well, the driller control driving device 38 rotates forwards, the manipulator 32 is driven to move forwards through the chain 37, and after the two single-arm hanging rings are clamped by the hanging ring control claw 321 of the manipulator 32, the manipulator 32 is continuously driven to drive the two single-arm hanging rings to drive the elevator to push towards the direction close to the well site oil pipe pulling machine. When the manipulator 32 pushes the elevator through the collar end of the tubing a at the front end of the wellsite tubing tractor, the elevator is controlled to close, clamp the tubing a, and then is hoisted. At the same time, the hand 32 controls the driving device 38 to rotate in the reverse direction, and the hand 32 is driven to retract to the home position by the chain 37. When the lifted oil pipe a is in a nearly vertical state, the driver again controls the driving device 38 to rotate forward, and the manipulator 32 is driven by the chain 37 to move in the direction of the lifted oil pipe a. When the tubing control pawl 322 of the manipulator 32 grips the hoisted tubing a, the driller control driving device 38 rotates reversely, and drives the manipulator 32 to move backwards through the chain 37 until the hoisted tubing a is pulled to the center of the wellhead, and the movement is automatically stopped. After centering the oil pipe a with the uppermost oil pipe a end of the well string, the driller control driving device 38 continuously rotates reversely, so that the manipulator 32 continuously moves backwards to the initial position, and a space is provided for the hydraulic clamp to buckle the oil pipe a. At this time, the running of the first tubing a into the well is completed. The above operations can be repeated subsequently to realize the running of the rest of the oil pipe a.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims (10)

1. A wellhead tubing movement device, comprising: a base (1), a bracket (2) and an oil pipe moving component (3),

the base (1) is provided with a connecting structure (11) for connecting with a blowout preventer (m);

the bracket (2) is connected between the base (1) and the oil pipe moving assembly (3) in the vertical direction;

the oil pipe moving assembly (3) comprises a guide rail (31), a manipulator (32), a mechanical arm (33) and a trolley (34), wherein a first end (331) of the mechanical arm (33) is connected with the trolley (34), a second end (332) of the mechanical arm (33) is connected with the manipulator (32), the trolley (34) is slidably mounted on the guide rail (31), and the guide rail (31) is fixedly connected with the support (2).

2. A wellhead tubing movement device according to claim 1, characterized in that the connection structure (11) comprises a first mounting hole (111), a mounting ring (112) and a gland (113), the first mounting hole (111) is located in the middle of the base (1), the mounting ring (112) is provided with a first bolt hole (1121) corresponding to the bolt hole (m2) of the flange of the blowout preventer (m), the gland (113) is provided with a second bolt hole (1131) and a second mounting hole (1132), the second bolt hole (1131) is corresponding to the first bolt hole (1121) and is arranged around the second mounting hole (1132), at least one of the opposite surfaces of the mounting ring (112) and the gland (113) is provided with a limit projection (114), the base (1) is rotatably mounted on the limit projection (114) through the first mounting hole (111), and is at least partially sandwiched between the mounting ring (112) and the gland (113).

3. A wellhead tubing displacement device according to claim 2, characterized in that the carrier (2) comprises at least two support legs (21), and both ends of the guide rail (31) are each fixedly connected with one of the at least two support legs (21).

4. A wellhead tubing moving device according to claim 3, characterized in that the support (2) comprises a first support leg (211), a second support leg (212), a third support leg (213) and a plurality of connecting rods (214), the first support leg (211), the second support leg (212) and the guide rail (31) are fixedly connected at two ends, the third support leg (213) and the first support leg (211) and the second support leg (212) are arranged at intervals and are located at the same side of the first mounting hole (111), and the first support leg (211), the second support leg (212) and the third support leg (213) are fixedly connected with each other through the connecting rods (214).

5. A wellhead tubing movement device according to any of claims 1 to 4, characterized in that the tubing movement assembly (3) further comprises a driving device (38) and a chain transmission mechanism (3a), the driving device (38) is arranged on the guide rail (31), and the driving device (38) is connected with the trolley (34) through the chain transmission mechanism (3 a).

6. A wellhead tubing movement device according to claim 5, characterized in that the chain transmission mechanism (3a) comprises a first chain wheel (35), a second chain wheel (36) and a chain (37), the first chain wheel (35) and the second chain wheel (36) are respectively arranged at two ends of the guide rail (31), the chain (37) is wound on the first chain wheel (35) and the second chain wheel (36), the trolley (34) and the chain (37) are fixedly connected, and the driving device (38) is in transmission connection with any one of the first chain wheel (35) and the second chain wheel (36).

7. A wellhead tubing movement device according to claim 6, characterized in that the tubing movement assembly (3) further comprises a first chain magazine (39a) and a second chain magazine (39b), the first sprocket (35) being located in the first chain magazine (39a) and the second sprocket (36) being located in the second chain magazine (39b), the first chain magazine (39a) and the second chain magazine (39b) being connected with both ends of the guide rail (31), respectively.

8. A wellhead tubing movement device according to claim 6, characterized in that the tubing movement assembly (3) further comprises a lock (4), at least one of the first sprocket (35) and the second sprocket (36) being configured to be slidably connected to the rail (31) along the length direction of the rail (31) and locked on the rail (31) by the lock (4).

9. A wellhead tubing moving device as claimed in any one of claims 1 to 4, characterized in that the trolley (34) is provided with a through hole (341), the trolley (34) is sleeved on the guide rail (31) through the through hole (341), and the side wall of the through hole (341) opposite to the guide rail (31) is provided with a roller (342).

10. A wellhead tubing movement device according to any of claims 1 to 4, characterized in that the manipulator (32) comprises a bail control claw (321) for gripping the bail and a tubing control claw (322) for gripping the tubing, the tubing control claw (322) being located in the middle of the bail control claw (321).

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