Rotatable tubing unit and tubing system

Abstract

The present application relates to the field of oil exploitation, and discloses a rotatable tubing running device and a tubing running system, the tubing running device comprising: a base; a plurality of tubing running assemblies connected to the base and uniformly arranged in the circumferential direction, a predetermined angle being formed between two adjacent tubing running assemblies, each tubing running assembly being configured to grab a tubing in a first position and release the tubing in a second position; wherein the base is capable of rotating by a predetermined angle to enable a single tubing running assembly to rotate from the first position to the second position. The present application can realize automatic tubing running, and can realize simultaneous tubing grabbing and tubing releasing by two tubing running assemblies, thereby reducing construction risks, improving operation efficiency, and also realizing automatic well killing operation.

Description

Technical Field

[0001] This invention relates to the field of oil extraction technology, specifically to a rotatable tubing jacking device and tubing jacking system. Background Technology

[0002] For oilfields primarily producing heavy oil, various thermal recovery methods exist, including steam flooding, SAGD, fire flooding, and steam huff and puff. Well control operations are typically performed using a wash-and-kill method. However, as oilfield recovery increases, reservoir pressure drops significantly, leading to substantial loss of kill fluid. This poses sudden well control safety hazards such as dissolved gas upwelling and inter-well gas leakage, and also prolongs the post-operation drainage time, potentially causing reservoir blockage in severe cases.

[0003] To meet the oilfield company's development needs of "reducing energy consumption, emissions, and increasing production," and addressing the issues of heat loss and reservoir contamination leading to reduced production caused by pre-operation well washing and control, it is necessary to develop non-killing well operation technology for thermal recovery wells and promote the transition from conventional to clean operations. However, non-killing well operation technology for thermal recovery wells involves wellhead operations such as tubing tripping and well washing / control, which involve high personnel risks and low operational efficiency. Therefore, it is necessary to design a highly automated tubing tripping system to solve the problems of high risk and low efficiency in wellhead equipment operations. Summary of the Invention

[0004] The main objective of this invention is to provide a rotatable tubing jacking device and tubing jacking system to solve the problems of high risk and low efficiency in manual tubing jacking operations.

[0005] According to one aspect of the present invention, a rotatable tubing lifting and lowering device is provided, comprising: Base; Multiple tubing lifting and lowering assemblies are connected to the base and evenly arranged in the circumferential direction. A predetermined angle is formed between two adjacent tubing lifting and lowering assemblies. Each tubing lifting and lowering assembly is configured to grip the tubing at a first position and release the tubing at a second position. The base can rotate by a predetermined angle to rotate a single tubing lifting assembly from a first position to a second position.

[0006] According to one embodiment of the present invention, the tubing lifting device includes four tubing lifting assemblies, with two adjacent tubing lifting assemblies perpendicular to each other.

[0007] According to one embodiment of the present invention, the tubing lifting assembly includes: The main body is cylindrical and has fitting holes; The outer shell is fitted onto the outside of the main body and has a first inclined surface; The hook is at least partially disposed between the main body and the outer shell, and has a second inclined surface that mates with the first inclined surface. The hook portion mates with the mating hole. The hook has a gripping position for gripping the oil pipe and a releasing position for releasing the oil pipe. The outer shell can move axially relative to the main body to drive the hook to move radially, so that the hook switches between a gripping position and a release position.

[0008] According to one embodiment of the present invention, the tubing lifting assembly further includes an elastic element disposed between the hook and the body, the elastic element being configured to drive the hook back to the released position.

[0009] According to one embodiment of the present invention, the hook includes a protrusion and a recess, the recess being located between the body and the outer shell, and the junction of the protrusion and the recess forming a second bevel.

[0010] According to one embodiment of the present invention, the hook includes a plurality of alternating protrusions and a plurality of recesses, and the outer shell has a receiving groove for receiving the protrusions.

[0011] According to one embodiment of the present invention, a first hydraulic oil chamber is formed between the main body and the outer shell, and a first partition is provided on the inner side of the outer shell. The first partition divides the first hydraulic oil chamber into a first compartment and a second compartment. The main body has a first flow channel and a second flow channel that communicate with the first compartment and the second compartment respectively. When in use, the hydraulic oil supplied through the first flow channel and the second flow channel drives the outer shell to move in opposite directions respectively.

[0012] According to one embodiment of the present invention, a first groove defining a first hydraulic oil chamber is formed on the outer side of the main body, the first groove has an opening on one axial side, and the main body is provided with a first seal that seals the opening.

[0013] According to one embodiment of the present invention, the tubing tripping assembly further includes an inlet pipe disposed within the main body for the inflow of working fluid into the well, the inlet pipe being axially movable to switch between a connected position connected to the tubing and a disengaged position disconnected from the tubing.

[0014] According to one embodiment of the present invention, the outlet end of the inlet pipe is provided with a retaining ring for sealing the oil pipe.

[0015] According to one embodiment of the present invention, the inlet end of the inlet pipe is bent radially, and the body has an axial groove for accommodating the inlet end.

[0016] According to one embodiment of the present invention, a second hydraulic oil chamber is formed between the main body and the inlet pipe. A second partition is provided on the outer side of the inlet pipe, which divides the second hydraulic oil chamber into a third partition and a fourth partition. The main body has a third flow channel and a fourth flow channel that communicate with the third partition and the fourth partition, respectively. When in use, the hydraulic oil supplied through the third flow channel and the fourth flow channel drives the inlet pipe to move in opposite directions.

[0017] According to one embodiment of the present invention, a second groove defining a second hydraulic oil chamber is formed on the inner side of the main body, and an opening is provided on one axial side of the second groove. The main body is provided with a second seal that seals the opening.

[0018] According to one embodiment of the present invention, the inlets of the first flow channel, the second flow channel, the third flow channel and the fourth flow channel are spaced apart in the axial and circumferential directions.

[0019] According to one embodiment of the present invention, the main body includes a first cylinder and a second cylinder partially sleeved outside the first cylinder; both the first flow channel and the second flow channel include an axially extending portion formed in the first cylinder and a radially extending portion formed in the second cylinder; a third flow channel and a fourth flow channel are formed in the first cylinder.

[0020] According to another aspect of the present invention, a tubing lifting and lowering system is provided, comprising: The tubing lifting and lowering device as described above; Drive unit connected to the base; The control device is configured to: control the drive device to drive the base to rotate by a predetermined angle so that a single tubing lifting assembly rotates from a first position to a second position; and control the two tubing lifting assemblies located at the first position and the second position to simultaneously perform tubing gripping and tubing release respectively.

[0021] According to one embodiment of the present invention, the tubing lifting assembly includes: a main body, a housing, and a hook; the main body is cylindrical and has a mating hole; the housing is sleeved on the outside of the main body and has a first inclined surface; the hook is at least partially disposed between the main body and the housing and has a second inclined surface that mates with the first inclined surface, the hook portion of the hook mates with the mating hole; the hook has a gripping position for gripping the tubing and a release position for releasing the tubing. The control device is configured to: control the housing of the tubing lift assembly in the first position to move along the first axial direction, so that the hook moves radially outward to the gripping position; and control the housing of the tubing lift assembly in the second position to move along the second axial direction, so that the hook moves radially inward to the release position.

[0022] According to one embodiment of the present invention, a first hydraulic oil chamber is formed between the main body and the outer shell, and a first partition is provided on the inner side of the outer shell. The first partition divides the first hydraulic oil chamber into a first compartment and a second compartment. The main body has a first flow channel and a second flow channel that communicate with the first compartment and the second compartment respectively. The system also includes a hydraulic oil supply device. The control device is configured to: control the hydraulic oil supply device to supply hydraulic oil to the first flow channel, causing the housing of the oil pipe lifting assembly to move along the first axial direction; and control the hydraulic oil supply device to supply hydraulic oil to the second flow channel, causing the housing of the oil pipe lifting assembly to move along the second axial direction.

[0023] According to one embodiment of the present invention, the tubing tripping assembly further includes an inlet pipe disposed within the main body for the inflow of working fluid into the oil well; the control device is configured to: control the inlet pipe to move along a first axial direction to a connection position connected to the tubing; and control the inlet pipe to move along a second axial direction to a disengagement position disconnected from the tubing.

[0024] According to one embodiment of the present invention, a second hydraulic oil chamber is formed between the main body and the inlet pipe, and a second partition is provided on the outer side of the inlet pipe. The second partition divides the second hydraulic oil chamber into a third compartment and a fourth compartment. The main body has a third flow channel and a fourth flow channel that communicate with the third compartment and the fourth compartment, respectively. The system also includes a hydraulic oil supply device. The control device is configured to: control the hydraulic oil supply device to supply hydraulic oil to the third flow channel, causing the inlet pipe to move along the first axial direction; and control the hydraulic oil supply device to supply hydraulic oil to the fourth flow channel, causing the inlet pipe to move along the second axial direction.

[0025] In the technical solution of this invention, by rotating the base by a predetermined angle, the tubing lifting and lowering assembly that grips the tubing in the first position rotates to the second position to release the tubing, thereby achieving automated tubing lifting, lowering, and placement, reducing construction risks, and improving work efficiency. Furthermore, the angle between the first and second positions corresponds to the angle between two adjacent tubing lifting and lowering assemblies. When the tubing lifting and lowering assembly that has gripped the tubing in the first position rotates to the second position, the other tubing lifting and lowering assembly rotates to the first position accordingly. The two tubing lifting and lowering assemblies located in the first and second positions can simultaneously perform tubing gripping and tubing release, further improving work efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of a tubing lowering device according to an embodiment of the present invention is shown; Figure 2 A cross-sectional view of a tubing lowering device according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of a single tubing lowering assembly according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of multiple flow channels according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of a first flow channel according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of the second flow channel according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of the third flow channel according to an embodiment of the present invention is shown; Figure 8 A schematic diagram of the fourth flow channel according to an embodiment of the present invention is shown; Figure 9 A schematic diagram showing the tubing lowering assembly in a non-operating state according to an embodiment of the present invention is shown; Figure 10 A schematic diagram showing the tubing lowering assembly in operation according to an embodiment of the present invention is provided. Figure 11 A schematic diagram of the working state of the tubing lowering device according to an embodiment of the present invention is shown. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to specific examples and the accompanying drawings.

[0029] It should be noted that all uses of "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of the present invention. Subsequent embodiments will not explain this in detail.

[0030] refer to Figure 1 and Figure 11The present invention proposes a rotatable tubing lifting and lowering device 100, comprising: a base 20 and a plurality of tubing lifting and lowering assemblies 10 connected to the base 20 and uniformly arranged in a circumferential direction. The plurality of tubing lifting and lowering assemblies 10 are arranged radially, and a predetermined angle is formed between two adjacent tubing lifting and lowering assemblies 10. Each tubing lifting and lowering assembly 10 is configured to grip the tubing 1 at a first position P1 (e.g., a vertically downward position) and release the tubing 1 at a second position P2 (e.g., a horizontally to the right position). The base 20 can rotate a predetermined angle under the drive of an external driving device, so that a single tubing lifting and lowering assembly 10 rotates from the first position P1 to the second position P2.

[0031] In an embodiment of the present invention, by rotating the base 20 by a predetermined angle, the tubing lifting and lowering assembly 10 that grips the tubing at the first position P1 rotates to the second position P2 to release the tubing, thereby automating the lifting, lowering, and placement of the tubing, reducing construction risks, and improving work efficiency. Furthermore, the angle between the first position P1 and the second position P2 corresponds to the angle between two adjacent tubing lifting and lowering assemblies 10. When the tubing lifting and lowering assembly 10 that has gripped the tubing at the first position P1 rotates to the second position P2, the other tubing lifting and lowering assembly 10 rotates accordingly to the first position P1. The two tubing lifting and lowering assemblies 10 located at the first position P1 and the second position P2 can simultaneously perform tubing gripping and tubing release, further improving work efficiency.

[0032] In some embodiments, the tubing lifting device 100 includes four tubing lifting assemblies 10, with adjacent tubing lifting assemblies 10 perpendicular to each other at a predetermined angle of 90 degrees. After the tubing is lifted, it is rotated 90 degrees and placed on a horizontal support structure. Figure 11 As shown, when the lower tubing lifting assembly 10 grips the tubing, the right tubing lifting assembly 10 releases the tubing. The predetermined angle is 90 degrees, ensuring that the tubing lifted from a vertical position is rotated 90 degrees and placed horizontally. In embodiments of the invention, the predetermined angle is equal to 360 degrees divided by the number of tubing lifting assemblies, which can be an integer greater than or equal to 3. The predetermined angle can be set according to the operating angles of the tubing lifting and placing operations. For example, where feasible, the number of tubing lifting assemblies can be 3, 6, or other numbers, and the corresponding predetermined angle can be set to 120 degrees, 60 degrees, or other angles.

[0033] refer to Figures 1 to 3The tubing lifting assembly 10 includes: a main body 110, which is cylindrical and has a mating hole 115; a housing 120, which is sleeved on the outside of the main body 110 and has a first inclined surface; and a hook 130, which is at least partially disposed between the main body 110 and the housing 120 and has a second inclined surface that mates with the first inclined surface. The hook portion of the hook 130 mates with the mating hole 115. The hook 130 has a gripping position for gripping the tubing 1 and a release position for releasing the tubing 1. The housing 120 is axially movable relative to the main body 110 to drive the hook 130 radially, thereby switching the hook 130 between the gripping position and the release position.

[0034] In an embodiment of the present invention, the outer casing 120 can move axially relative to the main body 110 to drive the hook 130 to move radially, so that the hook 130 switches between a gripping position and a release position. In this way, the outer casing 120 can be moved by a corresponding drive system to realize the gripping and release of the oil pipe, thereby realizing automated oil pipe lifting and lowering, reducing construction risks and improving work efficiency.

[0035] The main body 110 may include a first cylindrical body 112 and a second cylindrical body 114 partially sleeved outside the first cylindrical body 112. The first cylindrical body 112 and the second cylindrical body 114 can be sealed together by a sealing element. The first cylindrical body 112 and the second cylindrical body 114 can be arranged front and rear in the axial direction and partially overlap. The main body 110 adopts a split-molded first cylindrical body 112 and second cylindrical body 114, which facilitates manufacturing. Where feasible, the main body 110 can also be a one-piece molded component. The mating hole 115 penetrates the side wall of the main body 110, allowing the hook 130 to pass through the mating hole 115 and enter the interior of the main body 110 to engage with the oil pipe. The mating hole 115 can restrict the axial position of the hook 130. When the hook 130 is subjected to an axial thrust from the outer casing 120, the hook portion of the hook 130 can pass through the mating hole 115 and move radially inward. The engagement of the first inclined surface of the housing 120 and the second inclined surface of the hook 130 allows the hook 130 to be pushed to move radially when the housing 120 moves axially.

[0036] Specifically, when the housing 120 moves along the first axial direction X1, the latch 130 can be driven to move radially inward to the gripping position; when the housing 120 moves along the second axial direction X2, which is opposite to the first axial direction X1, the latch 130 is allowed to move radially outward back to the initial position (release position). (Reference) Figure 9 and Figure 10 The oil pipe 1 includes a coupling 2, and the connection between the oil pipe 1 and the coupling 2 forms a stepped section. For example... Figure 9 As shown, the hook 130 in the released position is located radially outside the coupling 2, cannot engage with the stepped portion, and therefore does not affect the oil pipe 1. Figure 10As shown, the hook 130 in the gripping position overlaps with the coupling 2 in the radial direction. By moving the tubing lifting and lowering device 100 axially closer to the coupling 2, the hook 130 can engage with the stepped portion. At this time, the hook 130 can capture the coupling 2, thereby lifting the tubing 1. The tubing lifting and lowering assembly 10 may have multiple hooks 130.

[0037] refer to Figure 3 In some embodiments, the tubing lowering assembly 10 further includes an elastic element 132 (e.g., a spring) disposed between the hook 130 and the body 110, the elastic element 132 being configured to drive the hook 130 back to the released position. When the housing 120 moves along a first axial direction X1, it pushes the hook 130 radially inward to compress the elastic element 132; when the housing 120 moves along a second axial direction X2, the hook 130 is no longer pushed by the housing 120, and under the elastic restoring force of the elastic element 132, the hook 130 moves radially outward to return to the released position.

[0038] refer to Figure 3 In some embodiments, the hook 130 includes a protrusion and a recess, the recess being located between the main body 110 and the outer shell 120, and the junction of the protrusion and the recess forming a second inclined surface. The recess, positioned between the main body 110 and the outer shell 120, can restrict the hook 130 to a certain extent, preventing it from falling off. Simultaneously, the mating hole 115 can also restrict the hook 130, and the area near the mating hole 115 can also protrude radially outward to axially limit the hook 130.

[0039] refer to Figure 3 In some embodiments, the hook 130 includes a plurality of alternating protrusions and a plurality of recesses, and the housing 110 has a receiving groove 117 for accommodating the protrusions. The junctions of the plurality of protrusions and recesses form a plurality of second inclined surfaces, and a plurality of first inclined surfaces are formed on the housing 120. The cooperation of the plurality of first and second inclined surfaces ensures that the housing 120 can more stably and reliably push the hook 130 to move. The cooperation of the protrusions and the receiving groove 117 further restricts the hook 130 to prevent it from falling off.

[0040] refer to Figure 3In some embodiments, a first hydraulic oil chamber 150 is formed between the main body 110 and the outer casing 120. A first partition 122 protrudes from the inner side of the outer casing 120, dividing the first hydraulic oil chamber 150 into a first compartment and a second compartment. The main body 110 has a first flow channel and a second flow channel that communicate with the first compartment and the second compartment, respectively. In use, hydraulic oil supplied through the first flow channel and the second flow channel drives the outer casing 120 to move in opposite directions. Specifically, hydraulic oil supplied through the first flow channel drives the outer casing 120 to move in a first axial direction X1, and hydraulic oil supplied through the second flow channel drives the outer casing 120 to move in a second axial direction X2.

[0041] refer to Figures 3 to 5 The first flow channel includes an axially extending portion formed in the first cylinder 112 and a radially extending portion formed in the second cylinder 114. In use, hydraulic oil enters the axially extending portion of the first flow channel through inlet A1, then flows out from port A2 and into E1, i.e., into the radially extending portion of the first flow channel, and finally flows into the first partition cavity, acting on the rear end face of the first partition 122 in the first axial direction X1. Figure 3 (The right end face of the middle), pushing the outer shell 120 to move in the first axial direction X1.

[0042] refer to Figure 3 , Figure 4 and Figure 6 The second flow channel includes an axially extending portion formed in the first cylinder 112 and a radially extending portion formed in the second cylinder 114. In use, hydraulic oil enters the axially extending portion of the second flow channel through inlet B1, then flows out from port B2 and into E2, i.e., into the radially extending portion of the second flow channel, and finally flows into the second partition cavity, acting on the rear end face of the first partition 122 in the second axial direction X2. Figure 3 (from the left end face of the casing), pushing the outer casing 120 to move in the biaxial direction X2.

[0043] refer to Figure 3 In some embodiments, a first groove defining a first hydraulic oil chamber 150 is formed on the outer side of the main body 110. The first groove has an opening on one axial side, and the main body 110 is provided with a first seal 111 that seals the opening. The first groove, the first seal 111, and the housing 120 together define a closed first hydraulic oil chamber 150. The first seal 111 can be axially position-adjustably fixed to the main body 110, thereby changing the axial length of the first hydraulic oil chamber 150 as needed, and thus changing the drive stroke.

[0044] refer to Figure 3In some embodiments, the tubing tripping assembly 10 further includes an inlet pipe 140 disposed within the main body 110 for the inflow of working fluid into the well. The inlet pipe 140 is axially movable to switch between a connected position connected to the tubing 1 and a disengaged position disconnected from the tubing 1. Specifically, the inlet pipe 140 is movable in a first axial direction X1 to the connected position and in a second axial direction X2 to the disengaged position. When in the connected position, working fluid can be injected into the tubing 1 via the inlet pipe 140 for relevant construction operations. The working fluid may include well-washing fluid and / or well-killing fluid for well-washing and well-killing operations.

[0045] When in the connected position, the inlet pipe 140 can be sealed to the coupling 2 of the oil pipe 1. (Reference) Figure 3 In some embodiments, the outlet end of the inlet pipe 140 is provided with a retaining ring 142 for sealing the oil pipe 1. The inlet pipe 140 is provided with a pusher 141 and a pusher back cap 143, which are used to install and fix the retaining ring 142 on the inlet pipe 140.

[0046] refer to Figure 3 In some embodiments, the inlet end of the inlet pipe 140 is bent radially, so that the inlet of the inlet pipe 140 can be exposed on the outer surface of the body 110 to receive liquid. (See reference...) Figure 11 The main body 110 has an axial groove 119 for receiving the inlet end to accommodate the axial movement of the inlet pipe 140.

[0047] refer to Figure 3 In some embodiments, a second hydraulic oil chamber 152 is formed between the main body 110 and the inlet pipe 140. A second partition 144 protrudes from the outer side of the inlet pipe 140, dividing the second hydraulic oil chamber 152 into a third compartment and a fourth compartment. The main body 110 has a third flow channel and a fourth flow channel that communicate with the third compartment and the fourth compartment, respectively. In use, hydraulic oil supplied through the third flow channel and the fourth flow channel respectively drives the inlet pipe 140 to move in opposite directions. Specifically, hydraulic oil supplied through the third flow channel drives the inlet pipe 140 to move in the first axial direction X1, and hydraulic oil supplied through the fourth flow channel drives the inlet pipe 140 to move in the second axial direction X2.

[0048] refer to Figure 3 , Figure 4 and Figure 7 The third flow channel is formed in the first cylinder 112. In use, hydraulic oil enters the third flow channel through inlet C1, then flows out from port C2 and into the third partition cavity, acting on the rear end face of the second partition 144 in the first axial direction X1. Figure 3 (on the right end face of the middle), push the liquid inlet pipe 140 to move in the first axial direction X1.

[0049] refer to Figure 3 , Figure 4 and Figure 8 The fourth flow channel is formed in the first cylinder 112. In use, hydraulic oil enters the fourth flow channel through inlet D1, then flows out from port D2 and into the fourth partition cavity, acting on the rear end face of the second partition 144 in the second axial direction X2. Figure 3 (on the left end face of the middle), push the liquid inlet pipe 140 to move in the second axial direction X2.

[0050] refer to Figure 3 In some embodiments, a second groove defining a second hydraulic oil chamber 152 is formed on the inner side of the main body 110. The second groove has an opening on one axial side, and the main body 110 is provided with a second seal 113 to seal this opening. The second groove, the second seal 113, and the inlet pipe 140 together define a closed second hydraulic oil chamber 152. The second seal 113 can be axially position-adjustably fixed to the main body 110, thereby changing the axial length of the second hydraulic oil chamber 152 as needed, and thus changing the drive stroke.

[0051] like Figure 1 As shown in the dashed box, in some embodiments, the inlets of the first, second, third, and fourth flow channels are spaced apart in the axial and circumferential directions to avoid mutual interference. The main body 110 has an exposed portion without the housing 120, where the inlets of the first, second, third, and fourth flow channels, as well as the axial groove 119, are located to facilitate liquid injection.

[0052] The present invention also proposes a tubing retrieval system, comprising: a tubing retrieval device 100 as described above; a drive device connected to a base 20; and a control device configured to: control the drive device to drive the base 20 to rotate by a predetermined angle so that a single tubing retrieval assembly 10 rotates from a first position P1 to a second position P2; and control the two tubing retrieval assemblies 10 located at the first position P1 and the second position P2 to simultaneously perform tubing gripping and tubing release respectively.

[0053] In some embodiments, the control device is configured to: control the housing 120 of the tubing lift assembly 10 located at the first position P1 to move along the first axial direction X1, such that the hook 130 moves radially outward to the gripping position; and control the housing 120 of the tubing lift assembly 10 located at the second position P2 to move along the second axial direction X2, such that the hook 130 moves radially inward to the release position.

[0054] In some embodiments, the system further includes a hydraulic oil supply device; the control device is configured to: control the hydraulic oil supply device to supply hydraulic oil to the first flow channel, causing the housing 120 of the hose lifting assembly 10 to move along the first axial direction X1; and control the hydraulic oil supply device to supply hydraulic oil to the second flow channel, causing the housing 120 of the hose lifting assembly 10 to move along the second axial direction X2.

[0055] In some embodiments, the control device is configured to: control the inlet pipe 140 to move along the first axial direction X1 to a connection position connected to the oil pipe; and control the inlet pipe 140 to move along the second axial direction X2 to a disengagement position disconnected from the oil pipe.

[0056] In some embodiments, the control device is configured to: control the hydraulic oil supply device to supply hydraulic oil to the third flow channel, causing the inlet pipe 140 to move along the first axial direction X1; and control the hydraulic oil supply device to supply hydraulic oil to the fourth flow channel, causing the inlet pipe 140 to move along the second axial direction X2.

[0057] In summary, this invention proposes an automated tubing tripping and well-washing / killing device. It enables automatic gripping of various tubing tripping components and well-washing / killing operations via hydraulic lines, reducing construction risks and improving operational efficiency. The tubing tripping device of this invention can rotate 360°. While the lower tubing tripping component grips the coupling, the tubing gripped by the right-side tubing tripping component can simultaneously fall onto the pipe bridge, facilitating coupling and uncoupling, enabling unmanned operation at the wellhead, and improving operational safety. Simultaneously, the hydraulic lines push the inlet pipe to achieve the function of sealing the coupling, facilitating subsequent well-washing / killing operations.

[0058] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples. Within the framework of the invention, technical features of the above embodiments or different embodiments can be combined, and many other variations of the different aspects of the invention as described above exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A rotatable tubing lifting and lowering device, characterized in that, include: Base; Multiple tubing lifting and lowering assemblies are connected to the base and evenly arranged in a circumferential direction. A predetermined angle is formed between two adjacent tubing lifting and lowering assemblies. Each tubing lifting and lowering assembly is configured to grip the tubing at a first position and release the tubing at a second position. The base is capable of rotating by the predetermined angle to rotate the single tubing lifting assembly from the first position to the second position.

2. The apparatus according to claim 1, characterized in that, The tubing lifting and lowering device includes four tubing lifting and lowering assemblies, with adjacent tubing lifting and lowering assemblies perpendicular to each other.

3. The apparatus according to claim 1, characterized in that, The tubing lifting and lowering assembly includes: The main body is cylindrical and has a mating hole; An outer casing, which is fitted over the outside of the main body and has a first inclined surface; A hook is provided at least partially between the main body and the outer shell, and has a second inclined surface that mates with the first inclined surface. The hook portion mates with the mating hole. The hook has a gripping position for gripping the oil pipe and a releasing position for releasing the oil pipe. The outer shell is axially movable relative to the body to drive the hook to move radially, thereby switching the hook between the gripping position and the releasing position.

4. The apparatus according to claim 3, characterized in that, The tubing lifting assembly also includes an elastic element disposed between the hook and the body, the elastic element being configured to drive the hook back to the released position.

5. The apparatus according to claim 3, characterized in that, The hook includes a protrusion and a recess, the recess being located between the body and the outer shell, and the junction of the protrusion and the recess forming a second inclined surface.

6. The apparatus according to claim 5, characterized in that, The hook includes a plurality of alternating protrusions and a plurality of recesses, and the housing has a receiving groove for accommodating the protrusions.

7. The apparatus according to claim 3, characterized in that, A first hydraulic oil chamber is formed between the main body and the outer shell. A first partition is provided on the inner side of the outer shell. The first partition divides the first hydraulic oil chamber into a first compartment and a second compartment. The main body has a first flow channel and a second flow channel that communicate with the first compartment and the second compartment, respectively. When in use, the hydraulic oil supplied via the first flow channel and the second flow channel drives the housing to move in opposite directions.

8. The apparatus according to claim 7, characterized in that, The outer side of the main body forms a first groove defining the first hydraulic oil chamber, and the first groove has an opening on one axial side. The main body is provided with a first seal to seal the opening.

9. The apparatus according to claim 7, characterized in that, The tubing tripping assembly also includes an inlet pipe disposed within the main body for the inflow of working fluid into the well. The inlet pipe is axially movable to switch between a connected position to the tubing and a disengaged position from the tubing.

10. The apparatus according to claim 9, characterized in that, The outlet end of the inlet pipe is provided with a retaining ring for sealing the oil pipe.

11. The apparatus according to claim 9, characterized in that, The inlet end of the liquid inlet pipe is bent radially, and the body has an axial groove for accommodating the inlet end.

12. The apparatus according to claim 9, characterized in that, A second hydraulic oil chamber is formed between the main body and the inlet pipe. A second partition protrudes from the outer side of the inlet pipe, dividing the second hydraulic oil chamber into a third compartment and a fourth compartment. The main body has a third flow channel and a fourth flow channel that communicate with the third compartment and the fourth compartment, respectively. When in use, the hydraulic oil supplied through the third flow channel and the fourth flow channel drives the inlet pipe to move in opposite directions.

13. The apparatus according to claim 12, characterized in that, The inner side of the main body forms a second groove that defines the second hydraulic oil chamber, and the second groove has an opening on one axial side. The main body is provided with a second seal that seals the opening.

14. The apparatus according to claim 12, characterized in that, The inlets of the first flow channel, the second flow channel, the third flow channel, and the fourth flow channel are spaced apart in the axial and circumferential directions.

15. The apparatus according to claim 12, characterized in that, The main body includes a first cylinder and a second cylinder partially sleeved outside the first cylinder; both the first flow channel and the second flow channel include an axially extending portion formed in the first cylinder and a radially extending portion formed in the second cylinder; the third flow channel and the fourth flow channel are formed in the first cylinder.

16. A tubing lifting and lowering system, characterized in that, include: The tubing lifting and lowering device as described in claim 1; The drive device connected to the base; The control device is configured to: control the drive device to drive the base to rotate by the predetermined angle, so that a single tubing lifting assembly rotates from the first position to the second position; and control the two tubing lifting assemblies located at the first position and the second position to simultaneously perform tubing gripping and tubing release, respectively.

17. The system according to claim 16, characterized in that, The tubing lowering assembly includes: a main body, a housing, and a hook. The main body is cylindrical and has a mating hole. The housing is sleeved on the outside of the main body and has a first inclined surface. The hook is at least partially disposed between the main body and the housing and has a second inclined surface that mates with the first inclined surface. The hook portion mates with the mating hole. The hook has a gripping position for gripping the tubing and a release position for releasing the tubing. The control device is configured to: control the housing of the tubing lifting assembly located at the first position to move along a first axial direction, so that the hook moves radially outward to the gripping position; and control the housing of the tubing lifting assembly located at the second position to move along a second axial direction, so that the hook moves radially inward to the release position.

18. The system according to claim 17, characterized in that, A first hydraulic oil chamber is formed between the main body and the outer shell. A first partition is provided on the inner side of the outer shell. The first partition divides the first hydraulic oil chamber into a first compartment and a second compartment. The main body has a first flow channel and a second flow channel that communicate with the first compartment and the second compartment, respectively. The system also includes a hydraulic oil supply device; The control device is configured to: control the hydraulic oil supply device to supply hydraulic oil to the first flow channel, causing the housing of the hose lifting assembly to move along a first axial direction; and control the hydraulic oil supply device to supply hydraulic oil to the second flow channel, causing the housing of the hose lifting assembly to move along a second axial direction.

19. The system according to claim 17, characterized in that, The tubing tripping assembly further includes an inlet pipe disposed within the main body for the inflow of working fluid into the oil well; the control device is configured to: control the inlet pipe to move along a first axial direction to a connection position connected to the tubing; and control the inlet pipe to move along a second axial direction to a disengagement position detached from the tubing.

20. The system according to claim 19, characterized in that, A second hydraulic oil chamber is formed between the main body and the inlet pipe. A second partition protrudes from the outer side of the inlet pipe, which divides the second hydraulic oil chamber into a third compartment and a fourth compartment. The main body has a third flow channel and a fourth flow channel that communicate with the third compartment and the fourth compartment, respectively. The system also includes a hydraulic oil supply device. The control device is configured to: control the hydraulic oil supply device to supply hydraulic oil to the third flow channel, causing the inlet pipe to move along the first axial direction; and control the hydraulic oil supply device to supply hydraulic oil to the fourth flow channel, causing the inlet pipe to move along the second axial direction.

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