Wellhead operation device and workover rig

Abstract

The present invention provides a wellhead operation device and a workover rig, relating to the technical field of oilfield workover operation equipment. The wellhead operation device includes a transport mechanism, a rotation mechanism, a lifting mechanism, and an operation mechanism; the transport mechanism is in transmission connection with the rotation mechanism, and the transport mechanism is used to drive the rotation mechanism to move horizontally; the rotation mechanism is in transmission connection with the lifting mechanism, and the rotation mechanism is used to drive the lifting mechanism to rotate within a horizontal plane; the operation mechanism can be directly or indirectly installed at the output end of the lifting mechanism, and the lifting mechanism is used to drive the operation mechanism to perform a lifting motion. The workover rig includes the wellhead operation device. Through this wellhead operation device, the technical problem in the prior art that the automated equipment for oilfield workover operations cannot well achieve finding the center of the wellhead at a suitable wellhead height is alleviated.

Description

Technical Field

[0001] The present invention relates to the technical field of oilfield workover operation equipment, and more particularly to a wellhead operation device and a workover rig. Background Art

[0002] At present, some automated equipment has been adopted in oilfield workover operations, realizing unmanned operation at the wellhead, greatly reducing the labor intensity of workers, improving the operation environment, and increasing the safety factor. However, the existing automated equipment for oilfield workover operations cannot well achieve finding the center of the wellhead at a suitable wellhead height. Summary of the Invention

[0003] The purpose of the present invention is to provide a wellhead operation device and a workover rig to alleviate the technical problem in the existing technology that the automated equipment for oilfield workover operations cannot well achieve finding the center of the wellhead at a suitable wellhead height.

[0004] In a first aspect, the present invention provides a wellhead operation device, including: a transporting mechanism, a rotating mechanism, a lifting mechanism, and an operating mechanism;

[0005] The transporting mechanism is in transmission connection with the rotating mechanism, and the transporting mechanism is used to drive the rotating mechanism to move in the horizontal direction;

[0006] The rotating mechanism is in transmission connection with the lifting mechanism, and the rotating mechanism is used to drive the lifting mechanism to rotate in the horizontal plane;

[0007] The operating mechanism is directly or indirectly installed at the output end of the lifting mechanism, and the lifting mechanism is used to drive the operating mechanism to perform a lifting motion.

[0008] Further, the transporting mechanism includes a transporting tray, a guide rail slidably connected to the transporting tray, and a transporting hydraulic cylinder for driving the transporting tray to move along the guide rail;

[0009] The rotating mechanism is installed on the transporting tray.

[0010] Further, there are two groups of the guide rails, and the two groups of guide rails are arranged in parallel;

[0011] The opposite sides of the transporting tray are respectively sleeved on the guide rails.

[0012] Further, the rotating mechanism includes a rotating tray and a rotation drive for driving the rotating tray to rotate;

[0013] The rotation drive is installed on the transporting tray.

[0014] Furthermore, the lifting mechanism includes a fixed sleeve, a lifting sleeve slidably connected to the fixed sleeve, and a lifting hydraulic cylinder driving the lifting sleeve to move;

[0015] The operating mechanism is installed on the lifting sleeve.

[0016] Furthermore, a pushing mechanism is provided between the lifting mechanism and the operating mechanism, and the pushing mechanism is used to push the operating mechanism to move in a horizontal direction.

[0017] Furthermore, the pushing mechanism adopts a multi-stage pushing mechanism, and each stage of the pushing mechanism includes a pushing tray and a pushing hydraulic cylinder;

[0018] The pushing tray of the first-level pushing mechanism is fixedly connected to the output end of the lifting mechanism, and the pushing trays of the two adjacent levels of the pushing mechanisms are connected through the pushing hydraulic cylinder of the upper level;

[0019] The working mechanism is installed on the pushing hydraulic cylinder of the pushing mechanism at the last stage.

[0020] Furthermore, the operating mechanism includes hydraulic clamps or splash-proof locking mechanisms.

[0021] Beneficial effects:

[0022] The wellhead operating device provided by the present invention has a transport mechanism connected with a rotating mechanism, the transport mechanism can drive the rotating mechanism to move in a horizontal direction, the rotating mechanism is connected with a lifting mechanism, the rotating mechanism can drive the lifting mechanism to rotate in a horizontal plane, the lifting mechanism is connected with an operating mechanism, and the lifting mechanism is used to drive the operating mechanism to perform lifting movements; specifically, the transport mechanism and the rotating mechanism cooperate to enable the operating mechanism to move to the center position of the wellhead, and at the same time, driven by the lifting mechanism, the operating mechanism can reach a suitable wellhead height, providing convenience for operating personnel to intervene in the operation.

[0023] In addition, the transport mechanism drives the rotation mechanism, lifting mechanism and operating mechanism to move at the same time, so that the operating mechanism can complete the movement, rotation angle adjustment and lifting in a shorter time, quickly align the wellhead center and quickly find the coupling position.

[0024] In a second aspect, the present invention provides a workover rig, comprising: a workover rig and a wellhead operation device according to any one of the aforementioned embodiments;

[0025] The wellhead operation device is installed on the well repair rig.

[0026] Furthermore, the workover rig is provided with a derrick, and when the transport mechanism and the lifting mechanism move to an initial state, the wellhead operating device is at least partially stored in the derrick;

[0027] And / or, a slip is further provided on the workover rig, and the slip is fixedly connected to the working mechanism during operation;

[0028] And / or, a manipulator is further provided on the workover rig.

[0029] Beneficial effects:

[0030] The workover rig provided by the present invention includes the aforementioned wellhead operation device. Among them, the technical advantages and effects achieved by the workover rig also include the technical advantages and effects achieved by the wellhead operation device, which will not be elaborated here. Description of the drawings

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is one of the structural schematic diagrams of the wellhead operation device provided by the embodiment of the present invention;

[0033] Figure 2 It is the front view of the wellhead operation device provided by the embodiment of the present invention;

[0034] Figure 3 It is the second structural schematic diagram of the wellhead operation device provided by the embodiment of the present invention;

[0035] Figure 4 It is the partial structural schematic diagram of the wellhead operation device provided by the embodiment of the present invention;

[0036] Figure 5 It is the structural schematic diagram of the workover rig provided by the embodiment of the present invention;

[0037] Figure 6 It is the partial structural schematic diagram of the workover rig provided by the embodiment of the present invention, where the wellhead operation device is in a retracted state.

[0038] Icon:

[0039] 10 - Wellhead operation device; 20 - Workover rig; 30 - Derrick; 40 - Slip; 50 - Manipulator:

[0040] 100 - Moving mechanism; 110 - Moving tray; 120 - Guide rail; 130 - Moving hydraulic cylinder; 140 - Support;

[0041] 200 - Rotating mechanism; 210 - Rotating tray; 220 - Rotating drive;

[0042] 300 - Lifting mechanism; 310 - Fixed sleeve; 320 - Lifting sleeve; 330 - Lifting hydraulic cylinder;

[0043] 400 - Operating mechanism;

[0044] 500 - Pushing mechanism; 510 - First - stage pushing tray; 520 - First - stage pushing hydraulic cylinder; 530 - Second - stage pushing tray; 540 - Second - stage pushing hydraulic cylinder; 550 - First - stage guide rod; 560 - Second - stage guide rod. Detailed implementation manners

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0047] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0048] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0049] In addition, terms such as "horizontal" and "vertical" do not require the components to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0050] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0051] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0052] This embodiment provides a wellhead operation device 10, as Figure 1 and Figure 2 shown. The wellhead operation device 10 includes a transportation mechanism 100, a rotation mechanism 200, a lifting mechanism 300, and an operation mechanism 400; the transportation mechanism 100 is drivingly connected to the rotation mechanism 200, and the transportation mechanism 100 is used to drive the rotation mechanism 200 to move in the horizontal direction; the rotation mechanism 200 is drivingly connected to the lifting mechanism 300, and the rotation mechanism 200 is used to drive the lifting mechanism 300 to rotate in the horizontal plane; the operation mechanism 400 can be directly or indirectly installed on the lifting mechanism 300, and the lifting mechanism 300 is used to drive the operation mechanism 400 to perform a lifting motion.

[0053] For the wellhead operation device 10 provided in this embodiment, the transportation mechanism 100 is drivingly connected to the rotation mechanism 200, and the transportation mechanism 100 can drive the rotation mechanism 200 to move in the horizontal direction; the rotation mechanism 200 is drivingly connected to the lifting mechanism 300, and the rotation mechanism 200 can drive the lifting mechanism 300 to rotate in the horizontal plane; the lifting mechanism 300 is drivingly connected to the operation mechanism 400, and the lifting mechanism 300 is used to drive the operation mechanism 400 to perform a lifting motion; specifically, the cooperation between the transportation mechanism 100 and the rotation mechanism 200 can enable the operation mechanism to move to the central position of the wellhead. At the same time, driven by the lifting mechanism 300, the operation mechanism can reach an appropriate wellhead height, which provides convenience for the operator to intervene in the operation.

[0054] In addition, the way that the transportation mechanism 100 drives the rotation mechanism 200, the lifting mechanism 300, and the working mechanism simultaneously can enable the working mechanism to complete the movement, the adjustment of the rotation angle, and the lifting within a short period of time, quickly achieving the alignment of the wellhead center and quickly finding the collar position.

[0055] It should be noted that the working mechanism 400 can be directly or indirectly installed at the output end of the lifting mechanism 300, including the following solutions:

[0056] Solution 1: The working mechanism 400 is directly installed at the output end of the lifting mechanism 300, and no other intermediate structures or components are required between the two.

[0057] Solution 2: The working mechanism 400 is indirectly installed at the output end of the lifting mechanism 300 through an intermediate structure or component (such as the pushing mechanism 500 mentioned later).

[0058] Specifically, as Figure 1 shown, the transportation mechanism 100 includes a transportation tray 110, a guide rail 120 slidably connected to the transportation tray 110, and a transportation hydraulic cylinder 130 for driving the transportation tray 110 to move along the guide rail 120; among them, the rotation mechanism 200 is installed on the transportation tray 110.

[0059] During operation, when the piston rod of the transportation hydraulic cylinder 130 extends, it can drive the transportation tray 110 to move along the first direction of the guide rail 120; similarly, when the piston rod of the transportation hydraulic cylinder 130 retracts, it can drive the transportation tray 110 to move along the second direction of the guide rail 120. Among them, the first direction and the second direction are set in opposite directions.

[0060] Please continue to refer to Figure 1 , the guide rails 120 are two groups, and the two groups of guide rails 120 are arranged in parallel; the opposite sides of the transportation tray 110 are respectively sleeved on the guide rails 120. With such a setting, the stability of the connection between the transportation tray 110 and the guide rails 120 can be improved, making the movement of the transportation tray 110 smoother.

[0061] Please refer to again Figure 1 , the transportation mechanism 100 further includes four groups of supports 140, and both ends of the guide rail 120 are fixed through the supports 140.

[0062] In this embodiment, as Figure 1 shown, the rotation mechanism 200 includes a rotation tray 210 and a rotation drive 220 for driving the rotation tray 210 to rotate; the rotation drive 220 is installed on the transportation tray 110.

[0063] Among them, the rotation drive 220 can adopt various forms. For example: the rotation drive 220 can adopt a motor, a rotary cylinder, an electric motor, etc.

[0064] Further, the rotation drive 220 can be directly connected to the rotation tray 210 for driving the rotation tray 210 to rotate; alternatively, the rotation drive 220 is connected to the rotation tray 210 through an intermediate member (such as a coupling, a reducer, etc.).

[0065] In this embodiment, as Figure 3 shown, the lifting mechanism 300 includes a fixed sleeve 310, a lifting sleeve 320 slidably connected to the fixed sleeve 310, and a lifting hydraulic cylinder 330 for driving the lifting sleeve 320 to move; the working mechanism 400 is installed on the lifting sleeve 320.

[0066] During operation, when the piston rod of the lifting hydraulic cylinder 330 extends, it can drive the lifting sleeve 320 to move upward along the fixed sleeve 310; similarly, when the piston rod of the lifting hydraulic cylinder 330 retracts, it can drive the lifting sleeve 320 to move downward along the fixed sleeve 310.

[0067] Optionally, the cross-sections of the fixed sleeve 310 and the lifting sleeve 320 can be circular or square. In this embodiment, the circular form is selected to reduce the friction between the two.

[0068] Further, the lifting hydraulic cylinder 330 can be one or more; when there are multiple lifting hydraulic cylinders 330, the multiple lifting hydraulic cylinders 330 can be arranged in a circular pattern. In this way, the connection stability between the lifting hydraulic cylinder 330 and the lifting sleeve 320 can be improved, making the lifting of the lifting sleeve 320 more stable.

[0069] In this embodiment, a pushing mechanism 500 is provided between the lifting mechanism 300 and the working mechanism 400. The pushing mechanism 500 is used to push the working mechanism to move horizontally. In this way, the working mechanism 400 can be retracted to reserve enough space.

[0070] Specifically, as Figure 4 shown, the pushing mechanism 500 adopts a multi-stage pushing mechanism. Each stage of the pushing mechanism 500 includes a pushing tray and a pushing hydraulic cylinder; the pushing tray of the first-stage pushing mechanism is fixedly connected to the output end of the lifting mechanism 300, and the pushing trays of two adjacent stages of the pushing mechanism 500 are connected through the pushing hydraulic cylinder of the previous stage; the working mechanism is installed on the pushing hydraulic cylinder of the last stage of the pushing mechanism 500. In this way, the size of the pushing mechanism 500 can be reduced when it retracts or is stored, reducing the space occupied by the pushing mechanism 500.

[0071] In an embodiment of the present application, please continue to refer to Figure 4, the pushing mechanism 500 is a two-stage pushing mechanism. Among them, the first-stage pushing tray 510 is fixedly connected to the lifting sleeve 320. The piston rod of the first-stage pushing hydraulic cylinder 520 is fixedly connected to the second-stage pushing tray 530. The piston rod of the second-stage pushing hydraulic cylinder 540 is fixedly connected to the working mechanism 400.

[0072] It should be noted that in the two-stage pushing mechanism, the last-stage pushing mechanism 500 is a second-stage pushing mechanism. Among them, the working mechanism is installed on the second-stage pushing hydraulic cylinder 540 of the second-stage pushing mechanism. Correspondingly, in the three-stage pushing mechanism, the last-stage pushing mechanism 500 is a three-stage pushing mechanism, and so on.

[0073] Furthermore, a first-stage guide rod 550 is also provided between the first-stage pushing tray 510 and the second-stage pushing tray 530. The first-stage guide rod 550 can be fixedly connected to the first-stage pushing tray 510. The second-stage pushing tray 530 is slidably connected to the first-stage guide rod 550 and moves along the first-stage guide rod 550 to guide the movement of the second-stage pushing tray 530. Similarly, a second-stage guide rod 560 is provided between the second-stage pushing tray 530 and the working mechanism 400. The working mechanism 400 is slidably connected to the second-stage guide rod 560 and moves along the second-stage guide rod 560 to guide the movement of the working mechanism 400.

[0074] In this embodiment, the working mechanism 400 includes a hydraulic tong or a splash-proof coupling mechanism; among them, the hydraulic tong can accurately make and break the connection, and the splash-proof coupling mechanism can accurately hold the coupling to achieve reliable coupling.

[0075] This embodiment also provides a workover rig, as Figure 5 shown. This workover rig includes a workover rig 20 and the aforementioned wellhead operation device 10; the wellhead operation device 10 is installed on the workover rig 20. With such a setting, the integration of the wellhead operation device 10 and the workover rig 20 can be achieved.

[0076] Among them, the wellhead operation device 10 can be installed on the chassis of the workover rig 20. Specifically, the support 140 can be installed on the chassis of the workover rig 20. The wellhead operation device 10 is directly fixedly connected to the chassis of the workover rig 20. During the operation process, there is no need for manual installation, which reduces the labor intensity of workers, avoids potential safety hazards, improves the efficiency of some operation processes, reduces the operation cost, and achieves the purpose of rapid movement.

[0077] Furthermore, as Figure 6 shown, a derrick 30 is provided on the workover rig 20. When the moving mechanism 100 and the lifting mechanism 300 move to the initial state, at least part of the wellhead operation device 10 is received in the derrick 30.

[0078] Specifically, according to Figure 6As shown, when the transporting mechanism 100 and the lifting mechanism 300 move to the initial state, a part of the wellhead operation device 10 is stored in the derrick 30, and part of it is exposed outside the derrick. Of course, by adjusting the installation position of the wellhead operation device 10, etc., the wellhead operation device 10 can also be completely stored in the derrick 30 to prevent interference with other structures and facilitate the transportation of the derrick 30.

[0079] As Figure 5 shown, the workover rig 20 is also provided with a slip 40, and the slip 40 is fixedly connected to the operating mechanism 400 during operation; the workover rig 20 is also provided with a manipulator 50.

[0080] The working process of this workover rig is as follows:

[0081] The wellhead operation device 10 is fixed on the chassis of the workover rig 20. During equipment installation, when the workover rig 20 reaches an appropriate position and the derrick 30 is erected, the operating mechanism 400 is pushed out to an appropriate distance from the wellhead center through the transporting mechanism 100, the operating mechanism 400 is adjusted to an appropriate height from the wellhead through the lifting mechanism 300, and the angle of the operating mechanism 400 is adjusted through the rotating mechanism 200 so that the device can accurately align with the wellhead center during operation.

[0082] During operation, the wellhead operation device 10 is pushed out to the working position, and the hydraulic tong or the anti-splash coupling device is respectively pushed to the wellhead center through two-stage extension of the pushing mechanism 500 for anti-splash coupling or make-up / break-out operations; after the operation is completed, the pushing mechanism 500 is retracted in two stages to retract the hydraulic tong and the anti-splash coupling device, leaving enough space for the elevator to fall.

[0083] During transportation, the wellhead operation device 10 is completely retracted to the transportation position through the transporting mechanism 100, as Figure 6 shown in the state.

[0084] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wellhead operation device, characterized in that, Comprising: A transportation mechanism (100), a rotation mechanism (200), a lifting mechanism (300), and an operating mechanism (400); The transportation mechanism (100) is in transmission connection with the rotation mechanism (200), and the transportation mechanism (100) is used to drive the rotation mechanism (200) to move in the horizontal direction; The rotation mechanism (200) is in transmission connection with the lifting mechanism (300), and the rotation mechanism (200) is used to drive the lifting mechanism (300) to rotate in the horizontal plane; The operating mechanism (400) is directly or indirectly installed at the output end of the lifting mechanism (300), and the lifting mechanism (300) is used to drive the operating mechanism (400) to perform lifting motion; A pushing mechanism (500) is provided between the lifting mechanism (300) and the operating mechanism (400), and the pushing mechanism (500) is used to push the operating mechanism (400) to move in the horizontal direction; The pushing mechanism (500) adopts a multi-stage pushing mechanism (500), and each stage of the pushing mechanism (500) includes a pushing tray and a pushing hydraulic cylinder; The pushing tray of the first-stage pushing mechanism (500) is fixedly connected to the output end of the lifting mechanism (300), and the pushing trays of adjacent two stages of the pushing mechanism (500) are in transmission connection through the pushing hydraulic cylinder of the previous stage; The operating mechanism (400) is installed on the pushing hydraulic cylinder of the last-stage pushing mechanism (500); A first-stage guiding rod is further provided between the first-stage pushing tray and the second-stage pushing tray. The first-stage guiding rod can be fixedly connected to the first-stage pushing tray, and the second-stage pushing tray is slidably connected to the first-stage guiding rod and moves along the first-stage guiding rod to play a guiding role in the movement of the second-stage pushing tray.

2. The wellhead operation device according to claim 1, characterized in that The transportation mechanism (100) includes a transportation tray (110), a guide rail (120) slidably connected to the transportation tray (110), and a transportation hydraulic cylinder (130) for driving the transportation tray (110) to move along the guide rail (120); The rotation mechanism (200) is installed on the transportation tray (110).

3. The wellhead operation device according to claim 2, characterized in that, There are two groups of the guide rails (120), and the two groups of the guide rails (120) are arranged in parallel; Two opposite sides of the transportation tray (110) are respectively sleeved on the guide rails (120).

4. The wellhead operation device according to claim 2, characterized in that, The rotation mechanism (200) includes a rotation tray (210) and a rotation drive (220) for driving the rotation tray (210) to rotate; The rotation drive (220) is installed on the transportation tray (110).

5. The wellhead operation device according to claim 4, characterized in that, The lifting mechanism (300) includes a fixed sleeve (310), a lifting sleeve (320) slidably connected to the fixed sleeve (310), and a lifting hydraulic cylinder (330) for driving the lifting sleeve (320) to move; The operating mechanism (400) is installed on the lifting sleeve (320).

6. The wellhead operation device according to claim 5, wherein, The operating mechanism includes a hydraulic tong or a splash-proof coupling mechanism.

7. A workover rig, characterized in that, Comprising: A workover rig (20) and the wellhead operating device according to any one of claims 1-6; The wellhead operating device (10) is installed on the workover rig (20).

8. The workover rig according to claim 7, characterized in that, A derrick (30) is provided on the workover rig (20). When the moving mechanism (100) and the lifting mechanism (300) move to the initial state, at least part of the wellhead operation device (10) is received in the derrick (30). And / or, a slip (40) is further provided on the workover rig (20), and the slip (40) is fixedly connected to the operation mechanism (400) during operation. And / or, a manipulator (50) is further provided on the workover rig (20).

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