Multi-directional wellhead tubing push and retrieval device

Abstract

The present application belongs to the technical field of downhole operation equipment of petroleum engineering, and particularly relates to a multi-directional wellhead oil pipe pushing device, aiming at solving the problems of too few working directions of the wellhead oil pipe pushing and pulling device and poor centering with the well pipe. The present application comprises a wellhead base, a winding base, a sleeve suction assembly and an adjusting assembly. The adjusting assembly comprises a middle connecting arm, a cylinder seat, a first telescopic cylinder and a second telescopic cylinder. The sleeve suction assembly comprises a connecting cylinder U-shaped ring. The first telescopic cylinder and the second telescopic cylinder drive the connecting cylinder U-shaped ring to push and pull the oil pipe by elongation and shortening. The present application can freely select the direction at 360 degrees, which is more suitable for the construction site of one place with multiple wells and has higher practicality. Moreover, the second telescopic cylinder, the connecting cylinder U-shaped ring, the well pipe and the oil pipe conveyor running track are on the same straight line, which guarantees the centering of the oil pipe pushing and pulling device with the well pipe, reduces the deviation correction and improves the construction speed and efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of downhole equipment for petroleum engineering, and specifically relates to a multi-directional wellhead tubing push-and-retract device. Background Technology

[0002] In China's petroleum system, downhole operations involve a large number of tubing tripping operations. These generally include a series of tasks such as manually attaching and detaching clamps, pushing and pulling threaded hydraulic tongs, and pushing and retrieving tubing. "Pushing and retrieving tubing" refers to two different working states: "retrieve" and "push." ​​"Retrieve" is used when running tubing downhole, receiving it from the distal runner and moving it to the wellhead, aligning the tubing centerline with the wellhead centerline, and then engaging the male thread of the running tubing with the female thread of the downhole tubing. "Push" is used when retrieving tubing downhole, moving it from the wellhead to the distal runner inlet. To address the safety risks of bumps, collisions, injuries, and disabilities associated with manual wellhead operations, as well as the high labor intensity and frequency of these operations, automated wellhead operation technology has emerged.

[0003] Patent No. ZL201410601601.8, entitled "Mechanical Arm and its Control Method", discloses a mechanical arm installed at the tail of a workover rig as one of the important devices for completing the push and pull of tubing. Specifically, when pulling tubing, the mechanical arm grabs the tubing and extends forward past the longitudinal axis of the tubing in the well, pushing the uncoupled tubing to the top slide entrance of the tubing conveyor at the front of the wellhead. When lowering tubing, the mechanical arm grabs the tubing and extends forward past the longitudinal axis of the tubing in the well, receiving the tubing to be lowered from the slide entrance of the tubing conveyor toward the center of the wellhead, and controlling it to be above the tubing coupling in the well.

[0004] Regarding the aforementioned technologies, the inventors discovered that in construction sites with multiple wells in one location, the insufficient number of working directions leads to unstable alignment between the equipment and the tubing inside the well, requiring real-time adjustments, which in turn results in low production efficiency. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, namely the limited working directions of the wellhead tubing pusher / retrieval device and poor alignment with the tubing inside the well, this invention provides a multi-directional wellhead tubing pusher / retrieval device.

[0006] This application provides a multi-directional wellhead tubing push-and-retract device, which adopts the following technical solution:

[0007] A multi-directional wellhead tubing pusher includes a wellhead base plate installed on a tubing blowout preventer, a detachable winding base platform connected to the circumference of the wellhead base plate, a suction assembly installed on the winding base platform, and an adjustment assembly for controlling the movement and alignment of the tubing by the suction assembly.

[0008] The wellhead base plate includes a circumferential flat plate;

[0009] The adjustment assembly includes a middle connecting arm with one end hinged to the winding platform, a cylinder seat hinged to the other end of the middle connecting arm, a first telescopic cylinder installed between the winding platform and the middle connecting arm, and a second telescopic cylinder installed on the cylinder seat; the bottom end of the first telescopic cylinder is hinged to the surface of the winding platform, and the piston rod of the first telescopic cylinder is hinged to the rod body of the middle connecting arm.

[0010] The suction assembly includes a connecting cylinder U-shaped ring, which is arranged laterally and connected to the piston rod of the second telescopic cylinder.

[0011] The first and second telescopic cylinders extend and retract, driving the connecting cylinder U-shaped ring to push and retract the moving oil pipe.

[0012] When the first and second telescopic cylinders retract, the center point of the U-shaped ring of the connecting cylinder forms a straight line with the longitudinal axis of the tubing in the well and the center line of the inlet of the tubing conveyor slide.

[0013] Preferably, a plurality of circumferential holes are provided at the edge of the circumferential plate, and the plurality of circumferential holes are evenly distributed on a circumferential line extending outward from the central hole of the circumferential plate.

[0014] The winding platform is detachably connected to the circumferential flat plate by inserting a pin into a circumferential hole.

[0015] Preferably, a double-plate frame is fixedly connected to the edge of the circumferential plate platform, and the double-plate frame is clamped to the outer edge of the circumferential plate by forming a groove with two layers of clamping plates;

[0016] At least two pins are inserted into the double-plate frame, and the two pins are inserted into two circumferential holes on the circumferential plate.

[0017] Preferably, an explosion-proof solenoid is installed on the connecting cylinder U-ring.

[0018] Preferably, a counterweight plate is fixedly connected to the lower side of the connecting cylinder U-shaped ring.

[0019] Preferably, an anchor support rod is installed on the other side of the circling platform, with one end of the anchor support rod in contact with the ground and the other end supporting the circling platform.

[0020] Preferably, the winding platform has an outward through-rod hole, and a positioning screw threadedly connected to the winding platform is threaded through the winding platform, with one end of the positioning screw inserted into the outward through-rod hole;

[0021] When the anchor support rod is inserted into the outward through hole, the positioning screw tightens the anchor support rod.

[0022] Preferably, a two-way balancer is installed on the middle connecting arm;

[0023] The bidirectional balancer includes a connecting plate fixedly connected to the middle connecting arm, and two vertically upward balancing screws are threaded through the edge of the connecting plate and are threaded to the connecting plate.

[0024] A compression spring is installed at the end of the balance screw, and the length of the balance screw is adjusted until the top of the compression spring contacts the bottom plane of the cylinder seat.

[0025] Preferably, the cylinder seat is a rectangular hollow body, and the second telescopic installation is inside the cylinder seat.

[0026] Preferably, the explosion-proof electromagnet is a DC electromagnet.

[0027] The beneficial effects of this invention are:

[0028] (1) The tubing push-and-retract device built around the base plate and the upper structure is installed on the circumference of the wellhead base plate, and the orientation can be freely selected in 360 degrees. This makes it more adaptable to construction sites with multiple wells in one place and more practical.

[0029] (2) The wellhead base plate, the winding plate base, the cylinder seat, the second telescopic cylinder, and the suction mechanism are all set around the longitudinal axis of the wellhead, so that the second telescopic cylinder, the connecting cylinder U-shaped ring, the tubing in the well, and the tubing conveyor run on the same straight line, ensuring the alignment of the tubing push and pull device with the tubing in the well, reducing deviation correction, and improving construction speed and efficiency. Attached Figure Description

[0030] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0031] Figure 1 This is a schematic diagram of the multi-directional wellhead tubing push-and-retract device in this embodiment;

[0032] Figure 2 This is a schematic diagram of the wellhead base plate in this embodiment;

[0033] Figure 3 This is a schematic diagram showing the connection between the winding base platform and the wellhead base platform in this embodiment;

[0034] Figure 4 This is a schematic diagram of the adjustment component in this embodiment;

[0035] Figure 5 This is a schematic diagram of the bidirectional balancer in this embodiment;

[0036] Figure 6 This is a schematic diagram of the suction assembly in this embodiment;

[0037] Figure 7 This is a schematic diagram of the anchor support rod supporting the base plate in this embodiment.

[0038] Explanation of reference numerals in the attached drawings: 1. Wellhead base plate; 11. Circumferential flat plate; 12. Flange sleeve; 13. Circumferential even hole; 2. Circumferential base plate; 21. Double plate connecting frame; 22. Pin; 23. Circumferential platform; 24. Outward through-rod hole; 25. Positioning screw; 3. Adjustment assembly; 31. Middle connecting arm; 32. Cylinder seat; 33. First telescopic cylinder; 331. First power supply and control group; 34. Second telescopic cylinder; 341. Second power supply and control group; 35. Bidirectional balancer; 351. Connecting plate; 352. Balance screw; 353. Compression spring; 4. Suction assembly; 41. Cylinder U-ring; 42. Counterweight hanging plate; 43. Explosion-proof electromagnetic device; 431. Third power supply and control group; 5. Anchor support rod. Detailed Implementation

[0039] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] This invention provides a multi-directional wellhead tubing push-and-retrieve device. Essential equipment commonly used at wellheads during well workover operations mainly includes a tubing blowout preventer (BOP), wellhead tubing, a tubing chuck, a moving tubing, and an external tubing conveyor. The multi-directional wellhead tubing push-and-retrieve device is mounted on the tubing BOP. The tubing BOP is installed at the wellhead, and the wellhead tubing passes through the BOP and is inserted into the well. The tubing chuck is installed to hold and secure the wellhead tubing and is positioned above the BOP. The moving tubing is used to connect to the wellhead tubing, and the external tubing conveyor is mainly used to transport the moving tubing.

[0042] Reference Figure 1 The multi-directional wellhead tubing push-and-retrieve device includes a wellhead base plate 1, a winding base 2 connected to the wellhead base plate 1, a suction assembly 4 installed on the winding base 2, an adjustment assembly 3 that controls the movement and alignment of the tubing by the suction assembly 4, and an anchor support rod 5 that further increases the stability of the winding base 2.

[0043] Reference Figure 1 , Figure 2The wellhead base plate 1 includes a circumferential flat plate 11 with a central hole. A flange sleeve 12 is welded to the lower surface of the circumferential flat plate 11. The flange sleeve 12 is concentrically arranged with the circumferential flat plate 11, and the circumferential flat plate 11 is connected to the tubing blowout preventer flange at the wellhead through the flange sleeve 12. The central hole of the circumferential flat plate 11 is used for tubing to pass through, ensuring that the tubing can rise and fall without interference from the circumferential flat plate 11. A tubing chuck is installed on the upper surface of the circumferential flat plate 11, and the tubing chuck is concentrically arranged with the circumferential flat plate 11. Circumferentially distributed holes 13 are formed at the edge of the circumferential flat plate 11. Multiple circumferentially distributed holes 13 are evenly distributed on a circumferential line extending outward from the central hole of the circumferential flat plate 11. The more circumferentially distributed holes 13 there are, the more angles that can be installed on the wellhead base plate 1, which is very important in modern oilfields where the increasing number of cluster wells leads to complex well conditions. If 36 circumferential holes are arranged, the wellhead center can be adjusted 35 times with a reference angle of 10 degrees. If 72 circumferential holes are arranged, the wellhead center can be adjusted 71 times with a reference angle of 5 degrees, thus increasing the degree of freedom in use.

[0044] Compared to the tubing push-and-retract device installed on the workover rig, which can only move forward and backward by one angle, the present invention solves the problem of the tubing push-and-retract device installed on the rotating base 2 being able to freely select its working direction by 360 degrees. This makes it more adaptable and practical for construction sites with multiple wells in one location.

[0045] Reference Figure 3 The rotating base 2 includes a double-plate frame 21, which is clamped to the outer edge of the circumferential plate 11 by two layers of clamping plates forming a groove. Pins 22 are inserted through the double-plate frame 21 and into circumferential holes 13, connecting the double-plate frame 21 to the circumferential plate 11. At least two pins 22 are inserted into the double-plate frame 21 and into two circumferential holes 13 on the circumferential plate 11, ensuring the rotating base 2 is stably and securely mounted on the circumferential plate 11.

[0046] A winding platform 23 is welded to the other side of the double-plate frame 21. The winding platform 23 is arranged horizontally. The suction assembly 4 and the adjustment assembly 3 are installed on the upper side of the winding platform 23.

[0047] Reference Figure 4The adjusting assembly 3 includes a central connecting arm 31, which is rod-shaped. One end of the central connecting arm 31 is hinged to the winding platform 23, and the other end is fitted with a cylinder mounting seat 32, which is hinged to the central connecting arm 31. A first telescopic cylinder 33 is installed between the central connecting arm 31 and the winding platform 23. The bottom end of the first telescopic cylinder 33 is hinged to the surface of the winding platform 23, away from the double-plate connecting frame 21. The connection point between the central connecting arm 31 and the winding platform 23 is located between the double-plate connecting frame 21 and the first telescopic cylinder 33, and the connection points of the three are on the same straight line. The piston rod of the first telescopic cylinder 33 is hinged to the rod body of the central connecting arm 31.

[0048] The first telescopic cylinder 33 is equipped with a first power supply and control group 331, which includes a power source, pipelines, electro-hydraulic valves, and a selective control switch, and is a conventional configuration. The power source can be hydraulic, derived from the workover rig that is essential for minor repairs, which is economical and provides stable speed. The electro-hydraulic valve is used to receive and selectively transmit pressurized media. The selective control switch is used to receive power from upstream and selectively transmit current to the electro-hydraulic valve. It is located near the operator, away from the wellhead, thus enabling power supply and remote control of the first telescopic cylinder 33.

[0049] When the first telescopic cylinder 33 is in the retracted state, the middle connecting arm 31 is in the vertical state, the cylinder mounting seat 32 is horizontal, and the second telescopic cylinder 34 in the cylinder mounting seat 32 is arranged horizontally; as the piston rod of the first telescopic cylinder 33 continuously pops out, the middle connecting arm 31 tilts towards the center of the rotating platform 23.

[0050] The cylinder mounting base 32 is a rectangular hollow body, and a second telescopic cylinder 34 is fixedly connected to the inner cavity of the cylinder mounting base 32. The second telescopic cylinder 34 is arranged facing the center of the rotating platform 23.

[0051] The second telescopic cylinder 34 is equipped with a second power supply and control group 341, which includes a power source, pipelines, electro-hydraulic valves, and a selective control switch, and is a standard configuration. The power source can be hydraulic, derived from the workover rig that is essential for minor repairs, which is economical and provides stable speed. The electro-hydraulic valve is used to receive and selectively transmit pressurized media. The selective control switch is used to receive power from upstream and selectively transmit current to the electro-hydraulic valve. It is located adjacent to the selective control switch of the first power supply and control group 331. This not only enables power supply and remote control of the second telescopic cylinder 34, but also facilitates operation.

[0052] To ensure that the cylinder head seat 32 is horizontal when the connecting arm 31 is vertical, a two-way balancer 35 is installed on the connecting arm 31. (Refer to...) Figure 5The bidirectional balancer 35 includes a connecting plate 351 fixedly connected to the middle connecting arm 31. Two balance screws 352 are inserted through the edge of the connecting plate 351, and the balance screws 352 are vertically upward inserted into the connecting plate 351 and threadedly connected to the connecting plate 351. The two balance screws 352 are located on both sides of the middle connecting arm 31. A compression spring 353 is installed at the end of the balance screw 352. The length of the balance screw 352 is adjusted so that the top of the compression spring 353 contacts the bottom plane of the cylinder seat 32. When the cylinder seat 32 tilts along the end of the middle connecting arm 31, it will press down on the compression spring 353. The compression spring 353 returns to its original position and pushes the cylinder seat 32 to rotate in a direction perpendicular to the middle connecting arm 31, so that the cylinder seat 32 returns to its original position.

[0053] Reference Figure 1 , Figure 6 The suction assembly 4 includes a connecting cylinder U-shaped ring 41, which is arranged laterally and connected to the piston rod of the second telescopic cylinder 34. The translation of the connecting cylinder U-shaped ring 41 is achieved by the extension and retraction of the piston rod of the second telescopic cylinder 34. The connecting cylinder U-shaped ring 41 is used to accommodate the moving oil pipe. The piston rod of the second telescopic cylinder 34 and the connecting cylinder U-shaped ring 41 can be connected by threads, allowing for a detachable connection between the connecting cylinder U-shaped ring 41 and the piston rod of the second telescopic cylinder 34, thus facilitating the connection of the suction assembly 4 to the adjusting assembly 3.

[0054] A counterweight plate 42 is fixedly connected to the lower side of the connecting cylinder U-ring 41. The counterweight plate 42 generates balance through counterweight to ensure that the transversely arranged connecting cylinder U-ring 41 does not tilt. An explosion-proof solenoid 43 is installed on the counterweight plate 42 by screws.

[0055] When the first telescopic cylinder 33 and the second telescopic cylinder 34 retract, the center point of the U-shaped ring 41 of the connecting cylinder forms a straight line with the longitudinal axis of the tubing in the well and the center line of the inlet of the tubing conveyor slide.

[0056] The suction assembly 4 is equipped with a third power supply and control group 431, which includes a power supply, wires, and a selector switch. The power supply comes from the workover rig that is essential at the minor repair site, and is a safe 24-volt voltage. The selector switch is used to receive power from the upstream wire and supply current to the explosion-proof solenoid 43. It is located adjacent to the selector switch of the first power supply and control group 331. This not only enables the power supply and remote control of the explosion-proof solenoid 43, but also provides convenience.

[0057] When pulling out the tubing, the movable tubing is disconnected from the tubing in the well. The movable tubing is lifted a short distance, and the first telescopic cylinder 33 extends, causing the middle connecting arm 31 to drive the second telescopic cylinder 34 and the suction assembly 4 forward. The connecting cylinder U-shaped ring 41 first accommodates and controls the movable tubing. The second telescopic cylinder 34 extends and pushes the movable tubing towards the slide inlet of the tubing conveyor at the front end of the wellhead. The movable tubing is lowered as a whole and its bottom contacts the slide inlet. The connecting cylinder U-shaped ring 41 completes the tubing pushing operation. The second telescopic cylinder 34 and the first telescopic cylinder 33 retract synchronously, causing the suction assembly 4 to return to the standby position. At this time, the center point of the ring opening of the connecting cylinder U-shaped ring 41 forms a straight line with the longitudinal axis of the tubing in the well and the center line of the slide inlet of the tubing conveyor. When the tubing is lowered, the moving tubing moves upward as a whole at the inlet of the tubing conveyor slide. The first telescopic cylinder 33 and the second telescopic cylinder 34 extend synchronously, causing the connecting cylinder U-shaped ring 41 to move forward and accommodate and control the moving tubing. When the second telescopic cylinder 34 retracts to complete its full retraction stroke, the center point of the ring opening of the connecting cylinder U-shaped ring 41 coincides with or is close in height to the longitudinal axis of the tubing in the well. The moving tubing is then lowered so that its bottom male thread enters the female thread of the tubing in the well. The connecting cylinder U-shaped ring completes the work of receiving the tubing. The first telescopic cylinder 33 retracts, driving the sleeve suction mechanism back to the standby position.

[0058] Under normal conditions, the longitudinal axis of the moving tubing suspended by the hoisting system coincides with the longitudinal axis of the tubing inside the well. However, in field operations, seasonal winds are common, which can cause the longitudinal axis of the moving tubing to deviate from that of the tubing inside the well. The function of the explosion-proof solenoid 43 is to stabilize the moving tubing in a timely manner and assist in ensuring that the male thread at the bottom of the moving tubing enters the female thread of the tubing inside the well. The explosion-proof solenoid 43 is a DC electromagnet, which mainly consists of an iron core, coil, conductor, and structural components, and can use the 24-volt safe voltage supplied by the workover rig on site. When current flows through the coil, it generates a magnetic force, creating a magnetic field that attracts the ferrous tubing. When the power is cut off, the attraction is immediately released. During tubing installation, the U-shaped ring 41 receives the tubing to be moved from the tubing conveyor's slide inlet. However, the outdoor wind and the inertia of the tubing moving obliquely upwards cause it to sway, making it difficult to align the male thread at the bottom of the tubing with the female thread inside the well. At this point, the explosion-proof solenoid 43 is energized, generating a magnetic force to stabilize the moving tubing. The tubing is then lowered until its male thread perpendicularly enters the female thread inside the well. The power is then cut off to release the magnetic force of the explosion-proof solenoid 43. This solves the problem of poor alignment between the tubing pusher / retractor and the tubing inside the well, reducing the need for corrections and improving construction speed and efficiency.

[0059] During the contact process between the connecting cylinder U-ring 41 and the moving oil pipe, two forces are generated: upward and downward. To prevent the piston rod of the second telescopic cylinder 34 from being twisted forcefully, the cylinder mounting seat 32 can rotate within a limited range around the middle connecting arm 31. To maintain the stability of the cylinder mounting seat 32, a two-way balancer 35 is installed on the upper part of the middle connecting arm 31. After the connecting cylinder U-ring 41 releases contact with the moving oil pipe, the cylinder mounting seat 32, the second telescopic cylinder 34, and the suction assembly 4 can be quickly returned to a stationary standby state by the compression spring 353.

[0060] Reference Figure 7 Anchor support rod 5 is used to assist in supporting the winding platform 23. It is connected to the winding platform 23 so that the winding base 2, adjustment component 3, and suction component 4 can be stably and balancedly arranged on the wellhead base plate 1. Specifically, an outward through-hole 24 is provided on the side of the winding platform 23 away from the double plate connecting frame 21. One end of the anchor support rod 5 is inserted into the outward through-hole 24, and the other end is provided with an anchor disc in contact with the ground. A positioning screw 25 is threaded onto the edge of the winding platform 23 and is threaded to the winding platform 23. One end of the positioning screw 25 is inserted into the outward through-hole 24. The positioning screw 25 is perpendicular to the anchor support rod 5. When the anchor support rod 5 is inserted into the outward through-hole 24, the positioning screw 25 is tightened. The end of the positioning screw 25 presses against the anchor support rod 5, tightly connecting the anchor support rod 5 and the winding platform 23 together, so that the anchor support rod 5 can support the winding platform 23. Furthermore, by setting outward-facing through-holes 24, the anchor support rod 5 can be inserted into the outward-facing through-holes 24, allowing workers to adjust the support height of the anchor support rod 5 according to the actual ground conditions. After setting the anchor support rod 5, the vibrations caused by the rapid movement of the first telescopic cylinder 33, the middle connecting arm 31, the cylinder seat 32, the second telescopic cylinder, and the suction assembly 4 can be reduced to the greatest extent possible, laying the foundation for the final aligning of the center point of the cylinder U-shaped ring 41 with the longitudinal axis of the tubing in the well and the center line of the tubing conveyor slide inlet.

[0061] The implementation method of this application embodiment is as follows: the step of pushing the tubing out of the wellhead using a multi-directional wellhead tubing pusher / retractor is as follows:

[0062] (1) After the movable tubing is pulled out and the tubing in the well is completely separated by threads, the movable tubing is lifted up by a short distance of about 10 cm. Then, the first control group 331 selector switch is operated to extend the first telescopic cylinder 33, which in turn drives the middle connecting arm 31, the second telescopic cylinder 34 and the sleeve suction assembly 4 forward a set distance. The connecting cylinder U-shaped ring 41 accommodates and controls the movable tubing. At this time, the center point of the ring opening of the connecting cylinder U-shaped ring 41 coincides with or is close in height to the longitudinal axis of the tubing in the well and the movable tubing.

[0063] (2) Operate the second power supply control group 341 selector switch to make the piston rod of the second telescopic cylinder 34 extend step by step, pushing the moving oil pipe to move towards the slide inlet of the oil pipe conveyor at the front end of the wellhead. At this time, the center point of the cylinder U-shaped ring 41, the longitudinal axis of the moving oil pipe, and the center line of the slide inlet of the oil pipe conveyor are on the same straight line.

[0064] (3) Move the bottom of the oil pipe to contact the slide entrance, and then start sliding on the slide. Operate the second power supply control group 341 to switch the control switch so that the piston rod of the second telescopic cylinder 34 retracts step by step, and the connecting cylinder U-shaped ring 41 completes the pushing of the oil pipe.

[0065] (4) Operate the first power supply control group 331 selector switch to retract the first telescopic cylinder 33 and return the suction assembly 4 to the standby position.

[0066] The steps for receiving tubing towards the center of the wellhead using a multi-directional wellhead tubing pusher / retractor are as follows:

[0067] (1) The moving tubing moves upward as a whole at the inlet of the tubing conveyor slide. After the bottom of the tubing leaves the slide inlet, the selector switches of the first control group 331 and the second control group 341 are operated to drive the first telescopic cylinder 33 and the second telescopic cylinder 34 to extend synchronously, so that the connecting cylinder U-shaped ring 41 moves forward to accommodate and control the moving tubing. If there is wind or the derrick is not straight, the selector switch of the third control group 431 is operated to energize the explosion-proof solenoid 43, generating a suction force to stabilize the moving tubing and prevent it from shaking.

[0068] (2) Move the bottom of the tubing away from the tubing conveyor slide, operate the selector switch of the second supply control group 341 to drive the second telescopic cylinder 34 to retract, complete the entire retraction stroke, and the male thread at the bottom of the moving tubing is above the female thread of the tubing in the well. At this time, the center point of the cylinder U-shaped ring 41, the moving tubing and the longitudinal axis of the tubing in the well coincide or are close in height, and lower the moving tubing to connect it with the thread of the tubing in the well.

[0069] (3) Operate the third power supply control group 431 selector switch to de-energize the explosion-proof solenoid 43 and release the suction force of the moving oil pipe.

[0070] (4) Operate the first power supply control group 331 selection switch to drive the first telescopic cylinder 33 to retract, so that the suction assembly 4 returns to the standby position.

[0071] The beneficial effects of the embodiments of this application are as follows:

[0072] (1) The tubing push-and-retract device of the wellhead base 2 and the upper structure are installed on the circumference of the wellhead base 1, and the orientation can be freely selected in 360 degrees. This makes it more adaptable to the construction site of multiple wells in one place and more practical.

[0073] (2) The wellhead base plate 1, the surrounding base plate 2, the cylinder seat 32, the second telescopic cylinder 34, and the sleeve suction assembly 4 are all set around the longitudinal axis of the wellhead, so that the second telescopic cylinder 34, the connecting cylinder U-shaped ring 41, the tubing in the well, and the tubing conveyor run on the same straight line, ensuring the alignment of the tubing push and pull device with the tubing in the well, reducing deviation correction, and improving construction speed and efficiency.

[0074] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0075] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A multi-directional wellhead tubing delivery device, characterized in that: It includes a wellhead base plate (1) installed on the tubing blowout preventer, a detachable circumferential mounting plate (2) connected to the wellhead base plate (1), a suction assembly (4) installed on the circumferential mounting plate (2), and an adjustment assembly (3) for controlling the suction assembly (4) to move and align the moving tubing. The wellhead base plate (1) includes a circumferential flat plate (11); The circumferential base (2) includes a circumferential platform (23), which is arranged horizontally; The adjustment assembly (3) includes a middle connecting arm (31) hinged at one end to the winding platform (23), a cylinder seat (32) hinged at the other end of the middle connecting arm (31), a first telescopic cylinder (33) installed between the winding platform (23) and the middle connecting arm (31), and a second telescopic cylinder (34) installed on the cylinder seat (32); the bottom end of the first telescopic cylinder (33) is hinged to the surface of the winding platform (23), and the piston rod of the first telescopic cylinder (33) is hinged to the rod body of the middle connecting arm (31); The suction assembly (4) includes a connecting cylinder U-ring (41), which is arranged laterally and is connected to the piston rod of the second telescopic cylinder (34). The first telescopic cylinder (33) and the second telescopic cylinder (34) extend and shorten to drive the connecting cylinder U-shaped ring (41) to push and retract the moving oil pipe; When the first telescopic cylinder (33) and the second telescopic cylinder (34) retract, the center point of the ring opening of the connecting cylinder U-shaped ring (41) forms a straight line with the longitudinal axis of the tubing in the well and the center line of the inlet of the tubing conveyor slide. A two-way balancer (35) is installed on the middle connecting arm (31); The bidirectional balancer (35) includes a connecting plate (351) fixedly connected to the middle connecting arm (31), and two vertically upward balancing screws (352) are provided at the edge of the connecting plate (351), and the balancing screws (352) are threadedly connected to the connecting plate (351). A compression spring (353) is installed at the end of the balance screw (352), and the length of the balance screw (352) is adjusted until the top of the compression spring (353) contacts the bottom plane of the cylinder seat (32).

2. The multi-directional wellhead tubing pusher according to claim 1, characterized in that: The circumferential plate (11) has a circumferentially evenly distributed hole (13) at its edge. There are multiple circumferentially evenly distributed holes (13), which are evenly distributed on the circumferential line extending outward from the central hole of the circumferential plate (11). The winding platform (23) is detachably connected to the circumferential flat plate (11) by inserting a pin (22) into the circumferential hole (13).

3. The multi-directional wellhead tubing pusher according to claim 2, characterized in that: A double-plate frame (21) is fixedly connected to the edge of the circumferential plate platform (23). The double-plate frame (21) is clamped to the outer edge of the circumferential plate (11) by two layers of clamping plates forming a groove. At least two pins (22) are inserted into the double plate frame (21), and the two pins (22) are inserted into the two circumferential holes (13) on the circumferential plate (11).

4. The multi-directional wellhead tubing pusher according to claim 1, characterized in that: An explosion-proof solenoid (43) is installed on the connecting cylinder U-ring (41).

5. The multi-directional wellhead tubing pusher according to claim 1, characterized in that: A counterweight plate (42) is fixedly connected to the lower side of the connecting cylinder U-shaped ring (41).

6. The multi-directional wellhead tubing pusher according to claim 1, characterized in that: An anchor support rod (5) is installed on the other side of the circling platform (23). One end of the anchor support rod (5) is in contact with the ground, and the other end supports the circling platform (23).

7. The multi-directional wellhead tubing pusher according to claim 6, characterized in that: The winding platform (23) is provided with an outward through-rod hole (24), and a positioning screw (25) threadedly connected to the winding platform (23) is provided on the winding platform (23). One end of the positioning screw (25) is inserted into the outward through-rod hole (24). When the anchor support rod (5) is inserted into the outward through-hole (24), the positioning screw (25) tightens the anchor support rod (5).

8. The multi-directional wellhead tubing pusher according to claim 7, characterized in that: One end of the anchor support rod (5) is inserted into the outward through hole (24), and the other end is provided with an anchor disc that contacts the ground.

9. The multi-directional wellhead tubing pusher according to claim 1, characterized in that, The cylinder mounting base (32) is a rectangular hollow body, and the second telescopic cylinder (34) is installed inside the cylinder mounting base (32).

10. The multi-directional wellhead tubing pusher according to claim 4, characterized in that: The explosion-proof electromagnet (43) is a DC electromagnet.

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