Power mouse hole

Abstract

The utility model relates to a power mouse hole which comprises a mouse hole pipe body, a pipe righting mechanism, a pipe lifting bottom support and a bottom support driving mechanism. The mousehole pipe body is installed on a drilling platform, an opening in the top end of the mousehole pipe body is flush with the platform face of the drilling platform, the pipe righting mechanism is installed at the top end of the mousehole pipe body, the pipe lifting collet is movably installed in the mousehole pipe body, and the collet driving mechanism is installed on the outer side of the mousehole pipe body and connected to the pipe lifting collet. And the pipe lifting bottom support is driven to vertically lift along the mouse hole pipe body. The lifting device has the beneficial effects that stable vertical lifting of the pipe can be realized, the height adjustment of the pipe can be met, different drilling tool combinations and operation requirements can be quickly adapted, the time consumed by height adjustment is reduced, and the overall efficiency of drilling operation is improved; and the pipe can be effectively restrained through the pipe righting mechanism, the pipe is prevented from shaking and rotating in the operation process, and the operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and natural gas drilling, in particular to a power rathole. Background Art

[0002] In oil drilling operations, traditional ratholes are mostly simple bare casing structures, which have many problems in practical applications.

[0003] In terms of drill tool height adjustment, traditional height adjustment methods mainly rely on opening multiple pin holes at the lower end of the drill tool and inserting retaining pins (such as bolts). This method has significant limitations. In drilling processes where drill tool height needs to be frequently adjusted to suit different operational requirements, manually adjusting the retaining pin positions one by one is not only cumbersome but also unable to achieve continuous and precise height adjustment. For example, when drilling in complex formations, it may be necessary to quickly and accurately adjust the rathole height according to different drill tool combinations to ensure smooth drilling operations. However, traditional methods are difficult to meet this requirement, resulting in low operational efficiency.

[0004] Traditional rathole systems exhibit significant deficiencies in the stability of drill tools within ratholes. During drilling operations, the drill tools lack effective restraint and stabilization measures within the rathole. When using an automatic tie-in device for tie-off, the drill tools often rotate along with the square drill pipe due to the lack of reliable fixation. This not only reduces the efficiency of tie-off, but also causes thread wear, affecting the service life and connection reliability of the drill tools. Furthermore, due to the lack of effective straightening and cushioning, the drill tools are prone to shaking during entry and exit of ratholes and while remaining within them. Excessive shaking can cause the drill tools to collide with the inner wall of the rathole, damaging the drill tools and the rathole itself, increasing maintenance costs, and posing a threat to the safety of drilling operations.

[0005] Therefore, there is an urgent need for a power rathole with high safety and high operating efficiency. Utility Model Content

[0006] (1) Technical issues to be resolved

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a power mouse hole, which solves the problems of the prior art.

[0008] (2) Technical solution

[0009] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0010] The utility model provides a power rathole, comprising a rathole pipe body, a pipe straightening mechanism, a pipe lifting bottom support and a bottom support driving mechanism; the rathole pipe body is installed on a drilling platform, and the opening at the top of the rathole pipe body is flush with the platform surface of the drilling platform; the pipe straightening mechanism is installed on the top of the rathole pipe body; the pipe lifting bottom support is movably installed in the rathole pipe body; the bottom support driving mechanism is installed on the outside of the rathole pipe body; the bottom support driving mechanism is connected to the pipe lifting bottom support to drive the pipe lifting bottom support to vertically rise and fall along the rathole pipe body.

[0011] Optionally, the pipe straightening mechanism includes a box, a mounting plate, two clamp arms, a straightening drive and a straightening transmission assembly; the box is installed at the top of the rathole pipe body, and the through holes at the top and bottom of the box and the opening at the top of the rathole pipe body are flush up and down; the mounting plate is installed in the box, the two clamp arms are rotatably mounted on the mounting plate, the straightening transmission assembly is installed on the mounting plate, the straightening drive is installed on the outside of the box, and the straightening drive is connected to the two clamp arms through the straightening transmission assembly to drive the two clamp arms to rotate in a vertical plane to clamp the pipe; when the two clamp arms clamp the pipe, the pipe can move along its axial direction.

[0012] Optionally, the righting transmission assembly includes a slider and two connecting rods; a vertical sliding rod is provided on the top of the mounting plate, the slider is slidably mounted on the sliding rod, the slider is rotatably connected to the two clamp arms through two connecting rods, and the righting driver is connected to the slider to drive the slider to slide up and down along the sliding rod. The sliding of the slider is converted into the rotation of the two clamp arms in the vertical plane through the two connecting rods to straighten or release the pipe.

[0013] Optionally, two rotatable limiting wheels are provided on the clamp arm; the two limiting wheels are arranged in a V-shape to form a clamping portion.

[0014] Optionally, the bottom support driving mechanism includes a connecting rope and two driving assemblies; the driving assembly includes a bottom support driver, a movable pulley seat, a movable pulley and a fixed pulley; the two ends of the connecting rope are respectively fixed to the upper part of both sides of the rat hole tube body, and the two bottom support drivers of the two driving assemblies are respectively installed at the lower part of both sides of the rat hole tube body, and the movable pulley is installed on the driving end of the bottom support driver through the movable pulley seat; the fixed pulley is installed on the top of the rat hole tube body and is located below the pipe straightening mechanism; the movable pulley is connected to the fixed pulley through the connecting rope, and the pipe lifting bottom support is hung on the connecting rope; the bottom support driver can drive the movable pulley to lift and lower to release or pull the connecting rope, so that the pipe lifting bottom support can be lowered or raised along the rat hole tube body through the connecting rope.

[0015] Optionally, the connecting rope is a steel wire rope; steel wire rope connecting parts are respectively provided on both sides of the rathole tube body, and the two ends of the connecting rope are connected to the two steel wire rope connecting parts.

[0016] Optionally, the base driver is an electric cylinder, a pneumatic cylinder or a hydraulic cylinder; a displacement sensor is provided in the base driver.

[0017] Optionally, two installation channels are provided from the inside to the outside of the rathole tube body, and the two installation channels are located on both sides of the rathole tube body and extend along the axial direction of the rathole tube body; the pipe lifting base includes a buffer support and a connecting plate; the connecting plate is installed on the buffer support, and a plurality of first rollers are evenly arranged on the outside of the buffer support, and the buffer support is movably supported in the rathole tube body through the plurality of first rollers; the two ends of the connecting plate are located in the two installation channels; the outer ring of the connecting plate is provided with a connecting groove extending along its circumference, and the connecting plate is connected to the connecting rope of the base drive mechanism through the connecting groove.

[0018] Optionally, a plurality of rope-stopping rods are evenly arranged on the connecting groove to limit the connecting rope.

[0019] (3) Beneficial effects

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides a power rathole. When on standby, the pipe lifting base is located at the top opening of the rathole pipe body. The pipe first enters the pipe straightening mechanism, and the pipe straightening mechanism straightens the pipe so that the pipe remains in a vertical state and enters the rathole pipe body and abuts against the pipe lifting base. Then, the base driving mechanism drives the pipe lifting base to descend, and the pipe descends to the target height along with the pipe lifting base. Thereafter, the pipe is kept stable by the pipe lifting base and the pipe straightening mechanism. Compared with the existing technology, the utility model can realize stable vertical lifting of the pipe, meet the height adjustment of the pipe, can quickly adapt to different drilling tool combinations and operation requirements, reduce the time spent on height adjustment, and improve the overall efficiency of the drilling operation; and the pipe straightening mechanism can effectively restrain the pipe, prevent the pipe from shaking and rotating during operation, reduce the collision and friction between the pipe and the inner wall of the rathole pipe body, reduce the risk of pipe damage, and also improve the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a power mouse hole in a specific embodiment of the present invention;

[0023] Figure 2 This is a structural diagram of a pipe straightening mechanism in a specific embodiment of the present utility model;

[0024] Figure 3 This is a structural diagram of a pipe lifting base in a specific embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the installation of the pipe lifting base in the rathole pipe body in a specific embodiment of the present utility model.

[0026] [Description of Reference Numerals]

[0027] 1: rathole pipe body; 11: installation channel;

[0028] 2: Pipe straightening mechanism; 21: Box; 22: Mounting plate; 23: Clamp arm; 24: Straightening actuator; 25: Slider; 26: Connecting rod; 27: Limiting wheel;

[0029] 31: connecting rope; 32: bottom support driver; 33: movable pulley; 34: fixed pulley; 35: wire rope connection part;

[0030] 41: Buffer support; 42: Connecting plate; 43: First roller; 44: Connecting groove; 45: Rope blocking rod. DETAILED DESCRIPTION

[0031] To better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0032] like Figure 1 and Figure 2 As shown, this embodiment provides a power rathole, including a rathole pipe body 1, a pipe straightening mechanism 2, a pipe lifting bottom support and a bottom support driving mechanism; the rathole pipe body 1 is installed on the drilling platform, and the opening at the top thereof is flush with the platform surface of the drilling platform, the pipe straightening mechanism 2 is installed on the top of the rathole pipe body 1, the pipe lifting bottom support is movably installed in the rathole pipe body 1, the bottom support driving mechanism is installed on the outside of the rathole pipe body 1, and the bottom support driving mechanism is connected to the pipe lifting bottom support to drive the pipe lifting bottom support to rise and fall vertically along the rathole pipe body 1.

[0033] Specifically, when it is on standby, the pipe lifting base is located at the top opening of the rathole pipe body 1, and the pipe first enters the pipe straightening mechanism 2, and the pipe is straightened by the pipe straightening mechanism 2, so that the pipe remains in a vertical state and enters the rathole pipe body 1 and abuts against the pipe lifting base. Then, the base driving mechanism drives the pipe lifting base to descend, and the pipe descends to the target height along with the pipe lifting base. Thereafter, the pipe is kept stable by the pipe lifting base and the pipe straightening mechanism 2. Compared with the existing technology, it can realize stable vertical lifting of the pipe, meet the height adjustment of the pipe, and can quickly adapt to different drilling tool combinations and operation requirements, reduce the time spent on height adjustment, and improve the overall efficiency of the drilling operation; and the pipe straightening mechanism 2 can effectively restrain the pipe to prevent the pipe from shaking and rotating during operation, reduce the collision and friction between the pipe and the inner wall of the rathole pipe body 1, reduce the risk of pipe damage, and also improve the safety of the operation.

[0034] Furthermore, as shown in the figure, the pipe straightening mechanism 2 includes a box body 21, a mounting plate 22, two clamp arms 23, a straightening driver 24 and a straightening transmission assembly; the box body 21 is installed at the top of the rathole pipe body 1, and the through holes at the top and bottom of the box body 21 and the opening at the top of the rathole pipe body 1 are flush with each other; the mounting plate 22 is installed in the box body 21, the two clamp arms 23 are rotatably mounted on the mounting plate 22, the straightening transmission assembly is installed on the mounting plate 22, and the straightening driver 24 is installed on the outside of the box body 21. The straightening driver 24 is connected to the two clamp arms 23 through the straightening transmission assembly to drive the two clamp arms 23 to rotate in a vertical plane to clamp the pipe; when the two clamp arms 23 clamp the pipe, the pipe can move along its axial direction. Specifically, the straightening drive assembly includes a slider 25 and two connecting rods 26. A vertical sliding rod is mounted on the top of the mounting plate 22, and the slider 25 is slidably mounted on the sliding rod. The slider 25 is rotatably connected to the two clamp arms 23 via two connecting rods 26. A straightening driver 24 is connected to the slider 25 to drive the slider 25 up and down along the sliding rod. The sliding movement of the slider 25 is converted by the two connecting rods 26 into vertical rotation of the two clamp arms 23 to straighten or release the pipe. In this embodiment, the clamp arms 23 are equipped with two rotatable limiting wheels 27; these limiting wheels 27 are arranged in a V-shape to form a clamping portion. This clamping portion on the two clamp arms 23 limits the pipe in both the lateral and circumferential directions, allowing only axial movement. A guide cone is provided at the top through-hole of the housing 21 to guide the pipe into the straightening space.

[0035] Further, as shown in the figure, the bottom support driving mechanism includes a connecting rope 31 and two driving assemblies; the driving assembly includes a bottom support driver 32, a movable pulley seat, a movable pulley 33 and a fixed pulley 34; the two ends of the connecting rope 31 are respectively fixed to the upper part of both sides of the rathole pipe body 1, and the two bottom support drivers 32 of the two driving assemblies are respectively installed at the lower part of both sides of the rathole pipe body 1, and the movable pulley 33 is installed on the driving end of the bottom support driver 32 through the movable pulley seat; the fixed pulley 34 is installed at the top of the rathole pipe body 1 and is located below the pipe straightening mechanism 2, specifically, the fixed pulley 34 is located below the box body 21; the movable pulley 33 is connected to the fixed pulley 34 through the connecting rope 31, and the pipe lifting bottom support is hung on the connecting rope 31; the bottom support driver 32 can drive the movable pulley 33 to lift and release or pull the connecting rope 31, so that the pipe lifting bottom support can be lowered or raised along the rathole pipe body 1 through the connecting rope 31. In this embodiment, the connecting rope 31 is a steel wire rope. Steel wire rope connectors 35 are provided on either side of the rathole pipe body 1, with both ends of the connecting rope 31 connected to the two steel wire rope connectors 35. The supporting actuator 32 is an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder. A displacement sensor is incorporated into the supporting actuator 32, and precise pipe height adjustment is performed based on the extension of the supporting actuator 32.

[0036] Furthermore, as shown in the figure, the rathole pipe body 1 is provided with two installation channels 11 from the inside to the outside. The two installation channels 11 are located on both sides of the rathole pipe body 1 and extend along the axial direction of the rathole pipe body 1. The pipe lifting base includes a buffer support 41 and a connecting plate 42. The connecting plate 42 is installed on the buffer support 41. A plurality of first rollers 43 are evenly arranged on the outer side of the buffer support 41. The buffer support 41 is movably supported in the rathole pipe body 1 by the plurality of first rollers 43. The two ends of the connecting plate 42 are located in the two installation channels 11. The outer ring of the connecting plate 42 is provided with a connecting groove 44 extending along its circumference. The connecting plate 42 is connected to the connecting rope 31 of the base drive mechanism through the connecting groove 44, and a plurality of rope blocking rods 45 are evenly arranged on the connecting groove 44 to limit the connecting rope 31. When the buffer support 41 moves along the rathole pipe body 1, the two ends of the connecting plate 42 move in the two installation channels 11.

[0037] The working conditions of the power rathole provided by this specific embodiment are as follows: the pipe enters the straightening space through the through hole at the top of the box body 21, and the slider 25 is driven to slide upward along the slide rod by the straightening driver 24. The sliding of the slider 25 is converted into the rotation of the two clamp arms 23 in the vertical plane through the two connecting rods 26. The clamping parts of the two clamp arms 23 straighten the pipe, and the pipe enters the opening of the rathole and abuts against the buffer support 41. The bottom support driver 32 is started to drive the movable pulley 33 to rise and release the connecting rope 31. The buffer support 41 descends along the rathole pipe body 1, and the two ends of the connecting plate 42 move synchronously along the installation channel 11. The pipe descends to the target height along with the buffer support 41.

[0038] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0039] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0040] In the present invention, unless otherwise expressly specified or limited, when a first feature is “above” or “below” a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0041] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0042] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A powered rathole, characterized in that: It comprises a rathole pipe body (1), a pipe straightening mechanism (2), a pipe lifting base and a base driving mechanism; The rathole pipe body (1) is installed on a drilling platform, and the opening at the top thereof is flush with the platform surface of the drilling platform. The pipe straightening mechanism (2) is installed on the top of the rathole pipe body (1). The pipe lifting base is movably installed in the rathole pipe body (1). The base driving mechanism is installed on the outside of the rathole pipe body (1). The base driving mechanism is connected to the pipe lifting base to drive the pipe lifting base to vertically rise and fall along the rathole pipe body (1).

2. The power rat hole according to claim 1, characterized in that: The pipe straightening mechanism (2) comprises a box (21), a mounting plate (22), two clamp arms (23), a straightening driver (24) and a straightening transmission assembly; The box (21) is installed at the top of the rathole pipe (1), and the through holes at the top and bottom of the box (21) and the opening at the top of the rathole pipe (1) are flush with each other; the mounting plate (22) is installed in the box (21), the two clamp arms (23) are rotatably mounted on the mounting plate (22), the righting transmission assembly is installed on the mounting plate (22), the righting driver (24) is installed outside the box (21), and the righting driver (24) is connected to the two clamp arms (23) through the righting transmission assembly to drive the two clamp arms (23) to rotate in a vertical plane to clamp the pipe; When the two clamp arms (23) clamp the pipe, the pipe can move along its axial direction.

3. The power rat hole according to claim 2, characterized in that: The righting transmission assembly includes a slider (25) and two connecting rods (26); A vertical slide bar is provided on the top of the mounting plate (22), and a slider (25) is slidably mounted on the slide bar. The slider (25) is rotatably connected to the two clamp arms (23) in a one-to-one correspondence through two connecting rods (26). A straightening driver (24) is connected to the slider (25) to drive the slider (25) to slide up and down along the slide bar. The sliding of the slider (25) is converted into the rotation of the two clamp arms (23) in a vertical plane through the two connecting rods (26) to straighten or release the pipe.

4. The power rat hole according to claim 2, characterized in that: Two rotatable limiting wheels (27) are provided on the clamp arm (23); The two limiting wheels (27) are arranged in a V shape to form a clamping portion.

5. The power rat hole according to claim 1, characterized in that: The bottom support driving mechanism comprises a connecting rope (31) and two driving components; The driving assembly includes a bottom support driver (32), a movable pulley seat, a movable pulley (33) and a fixed pulley (34); The two ends of the connecting rope (31) are respectively fixed to the upper parts of both sides of the rat hole pipe body (1); the two bottom support drivers (32) of the two driving assemblies are respectively installed at the lower parts of both sides of the rat hole pipe body (1); the movable pulley (33) is installed on the driving end of the bottom support driver (32) through the movable pulley seat; the fixed pulley (34) is installed on the top of the rat hole pipe body (1) and is located below the pipe straightening mechanism (2); the movable pulley (33) is connected to the fixed pulley (34) through the connecting rope (31), and the pipe lifting bottom support is hung on the connecting rope (31); The bottom support driver (32) can drive the movable pulley (33) to lift and release or pull the connecting rope (31), so that the pipe lifting bottom support can be lowered or raised along the rathole pipe body (1) through the connecting rope (31).

6. The power rat hole according to claim 5, characterized in that: The connecting rope (31) is a steel wire rope; Steel wire rope connecting parts (35) are respectively provided on both sides of the rat hole tube body (1), and both ends of the connecting rope (31) are connected to the two steel wire rope connecting parts (35).

7. The power rat hole according to claim 5, characterized in that: The bottom support driver (32) is an electric cylinder, a pneumatic cylinder or a hydraulic cylinder; A displacement sensor is provided in the bottom support driver (32).

8. The power rathole according to claim 1, characterized in that: The rat hole tube body (1) is provided with two installation channels (11) from the inside to the outside. The two installation channels (11) are located on both sides of the rat hole tube body (1) and extend along the axial direction of the rat hole tube body (1). The pipe lifting base includes a buffer support (41) and a connecting plate (42); The connecting plate (42) is mounted on the buffer support (41), and a plurality of first rollers (43) are evenly arranged on the outer side of the buffer support (41). The buffer support (41) is movably supported in the rat hole tube body (1) by the plurality of first rollers (43); both ends of the connecting plate (42) are located in the two mounting channels (11); The outer ring of the connecting disk (42) is provided with a connecting groove (44) extending along its circumference, and the connecting disk (42) is connected to the connecting rope (31) of the bottom support driving mechanism through the connecting groove (44).

9. The power rat hole according to claim 8, characterized in that: A plurality of rope-blocking rods (45) are evenly arranged on the connecting groove (44) to limit the connecting rope (31).

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