Rotary mousehole slip A rotary mousehole slip

Abstract

The application discloses a rotating mouse hole slip, and relates to the technical field of oil drilling devices, and specifically comprises a rotating assembly, a rotating ring installed at the movable end of the rotating assembly, a lifting assembly installed at the outer side of the rotating assembly, a clamping assembly with the bottom arranged in the rotating ring, and a bearing assembly with the inner ring part connected with the top of the clamping assembly and the outer ring part connected with the movable end of the lifting assembly. The application solves the technical problems of single function and easy damage of the existing mouse hole slip. After clamping the drilling tool, the application can rotate and complete assembly, so that the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of oil drilling equipment technology, and more particularly to a rotating mouse hole chuck. Background Technology

[0002] In oil drilling operations, before drilling begins, multiple drill strings need to be connected together to form a stand, which is then stored in the stand box on the drilling rig to meet the drilling depth requirements. This process, commonly known as "stand connection," is an essential and time-consuming step in drilling operations. To shorten the well construction cycle and improve operational efficiency, the industry generally adopts an "offline stand connection" operation mode. This involves pre-connecting the stand using a mouse hole while normal drilling operations are underway, thus achieving parallel wellhead operations and stand connection operations. However, in actual operations, the space between the mouse hole and the wellhead is extremely narrow. Performing manual threading and flushing operations in this confined space poses significant safety risks, with workers facing the dangers of being injured by rotating drill strings, being pinched, or having tools fall.

[0003] Existing mouse hole slips are mainly used to secure drill bits within stand-up pouches or mouse holes. Their structure typically only provides clamping functionality and cannot enable active rotation of the drill bit. When swivel or punching is required, other auxiliary equipment (such as power swivels or hydraulic tongs) must be relied upon, increasing equipment costs and operational complexity. Furthermore, due to space constraints, efficient and safe operation is often difficult. In addition, existing slips are insufficient in bearing the weight of the drill bit and the enormous counter-torque generated during punching, easily leading to clamping failure or equipment damage. Summary of the Invention

[0004] The purpose of this invention is to provide a rotating mouse hole catcher that solves the technical problems of limited functionality and easy damage of existing mouse hole catchers.

[0005] This application discloses a rotating mouse hole kava, comprising: Rotating components; A rotating ring is installed at the movable end of the rotating assembly; A lifting assembly is installed on the outside of the rotating assembly; The clamping assembly is located at its bottom inside the rotating ring; A bearing assembly, wherein the inner ring portion of the bearing assembly is connected to the top of the clamping assembly, and the outer ring portion is connected to the movable end of the lifting assembly.

[0006] This application uses a lifting assembly to drive the bearing assembly to move up and down, thereby realizing the lifting and lowering of the clamping assembly to complete the clamping and releasing of the drill bit. This completes the clamping of the drill bit. After clamping, the rotating assembly is started to rotate, thereby realizing the rotation and tightening of the drill bit. This achieves the clamping and rotation functions and improves the applicability of this application.

[0007] Based on the above technical solution, the present application can be further improved as follows: Furthermore, the inner wall of the rotating ring is provided with a sliding groove; The clamping assembly includes: A flange component, wherein an assembly groove is provided inside the flange component; The pliers head has its top disposed inside the mounting groove and its bottom disposed inside the sliding groove. The jaw plate is installed on the inside of the pliers head. The advantage of this step is that the clamping action can be completed through the coordinated movement of the jaw plate and the pliers head.

[0008] Furthermore, the inner wall of the sliding groove is an inclined surface, and a pad is installed on the inner wall of the sliding groove. The beneficial effect of this step is that the pad can ensure the stability of the clamping component during long-term sliding.

[0009] Furthermore, the inner side of the dental plate is provided with two sets of teeth, the extension lines of the two sets of teeth intersect, and the angle between the teeth and the horizontal plane is 45 degrees. The beneficial effect of this step is that the dental plate can withstand both vertical gravity and counter-torque.

[0010] Furthermore, the clamping assembly also includes a central tube, which is disposed inside the rotating ring and has clearance holes. The advantage of this step is that it facilitates the extension of the jaw plate to complete the clamping of the pipe, while the central tube can also prevent other parts from being contaminated with mud.

[0011] Furthermore, the top of the pliers head is provided with a raised edge, which cooperates with the mounting groove. The beneficial effect of this step is that the top of the pliers head can move inward or outward along the mounting groove through the cooperation of the mounting groove and the raised edge.

[0012] Furthermore, the number of clamp heads is at least three. The advantage of this step is that by using multiple clamp heads to clamp simultaneously in multiple directions, stability can be guaranteed.

[0013] Further, the rotating assembly includes: shell; The driven gear is disposed inside the housing; A turntable is connected to the driven gear, and the rotating ring is mounted on the turntable; A driving gear is installed inside the housing, and the driving gear meshes with the driven gear; A hydraulic motor is mounted on the housing, and the output end of the hydraulic motor is connected to the drive gear. The advantage of this step is that rotation can be achieved through the cooperation of multiple components, that is, rotation can be performed after stable clamping.

[0014] Furthermore, the lifting assembly includes: The mounting base is located on the outside of the housing; The lifting hydraulic cylinder is connected at its bottom to the mounting base. A connecting seat is provided on the outside of the bearing assembly and is installed on the piston rod end of the lifting hydraulic cylinder. The beneficial effect of this step is that the lifting hydraulic cylinder performs lifting and lowering movements, which in turn drives the flange to move up and down, thereby achieving synchronous lifting and lowering movements of multiple toothed plates.

[0015] Furthermore, a positive and negative nut is provided between the piston rod end of the lifting hydraulic cylinder and the connecting seat. The beneficial effect of this step is that the position of the flange can be adjusted by adjusting the positive and negative nut, thereby enabling better adjustment of the subsequent clamping size of the clamping head and jaw plate.

[0016] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. This application provides a rotating mouse hole clamp that can rotate after clamping the drill bit to complete the assembly, thereby improving work efficiency.

[0017] 2. This application enables multiple clamping heads to move synchronously through the flange, thereby achieving synchronous clamping and ensuring clamping stability.

[0018] 3. This application has a sliding groove with an inclined surface on the inner wall of the rotating ring and a pad is installed to ensure the smooth movement and service life of the clamp head during long-term sliding. At the same time, the central tube of this application has a clearance hole to facilitate the extension of the jaw plate to clamp the pipe, while effectively shielding the internal components and preventing the intrusion of mud and other debris, thereby improving the reliability and maintenance convenience of the equipment.

[0019] 4. This application uses positive and negative nuts provided between the piston rod end of the lifting hydraulic cylinder and the connecting seat to adjust the initial position of the flange and the clamping head, thereby adjusting the opening and closing and clamping diameter of the clamping assembly. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a rotating mouse hole chuck according to a specific embodiment of the present invention; Figure 2 forFigure 1 Side view; Figure 3 for Figure 2 Sectional view along axis AA; Figure 4 for Figure 3 A magnified view of a portion of C in the diagram; Figure 5 for Figure 1 The main view; Figure 6 for Figure 5 BB-direction sectional view; The attached figures are labeled as follows: 1-Rotating assembly; 2-Rotating ring; 3-Lifting assembly; 4-Clamping assembly; 5-Bearing assembly; 101 - Housing; 102 - Driven gear; 103 - Turntable; 104 - Driven gear; 105 - Hydraulic motor; 201-Sliding groove; 202-Plate; 301-Mounting base; 302-Lifting hydraulic cylinder; 303-Connecting base; 304-Positive and negative nuts; 401-Flange; 402-Assembly slot; 403-Pliers head; 404-Gear plate; 405-Teeth; 406-Center tube; 407-Clearing hole; 408-Raised edge. Detailed Implementation

[0022] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention. It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by those skilled in the art to which this invention pertains.

[0023] In the description of this application, it should be understood that the terms "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "setup," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0026] Example: During oil drilling operations, stand-up assembly is required, which involves connecting multiple drill strings together using threads to form a stand-up assembly, which is then stored in a stand-up assembly box on the drilling rig. Traditional stand-up assembly operations typically rely on manual labor, requiring drill string alignment and tightening near the wellhead or burrow. Due to the short distance between the wellhead and burrow and the confined working space, manual operation is not only inefficient and wastes valuable drilling time, but also poses significant personal safety risks, especially when handling counter-torque or heavy drill strings. Existing technologies often struggle to achieve stable clamping and efficient rotation of drill strings within limited space, or the rotation and lifting functions interfere with each other, resulting in complex equipment structures and poor coordination.

[0027] like Figures 1-6 As shown, to address the above problems, this application provides a rotating mouse hole chuck to solve these problems, and its specific structure includes: Rotating assembly 1, which provides the power for rotation, i.e., drives the clamped drill bit to rotate; Rotating ring 2 is installed on the movable end of the rotating component 1, and the rotating ring 2 rotates under the drive of the rotating component 1; The lifting component 3 is installed on the outside of the rotating component 1. The lifting component 3 mainly provides the power for lifting, that is, it drives the clamping component 4 to perform lifting and lowering movements, so that the clamping component can perform clamping and releasing actions. The clamping component 4 is located inside the rotating ring 2 at its bottom, thereby completing the clamping or releasing action; The bearing assembly 5 has an inner ring portion connected to the top of the clamping assembly 4 and an outer ring portion connected to the movable end of the lifting assembly 3. The bearing assembly 5 is designed to facilitate both rotation and clamping.

[0028] The rotating ring 2 is a cylindrical structure that is installed on the movable end of the rotating component 1 and moves synchronously when rotating. The rotating ring 2 also has a cavity inside for installing the clamping component 4.

[0029] The main working principle of this application is that the lifting component 3 drives the clamping component 4 to move up and down to clamp the drill bit, while the rotating component drives the rotating ring to rotate, so that the clamped drill bit can rotate to complete the docking requirement.

[0030] In order to enable the clamping assembly 4 to move up and down stably, this application provides a sliding groove 201 on the inner wall of the rotating ring 2, which can ensure the stability of the subsequent movement of the clamp head.

[0031] like Figure 3 As shown, the clamping assembly 4 includes: Flange 401, wherein an assembly groove 402 is provided inside the flange 401, which facilitates the subsequent assembly of the pliers head; The top of the pliers 403 is disposed inside the assembly groove 402, and the bottom of the pliers 403 is disposed inside the sliding groove 201. The jaw plate 404 is installed on the inside of the pliers head 403.

[0032] Specifically, such as Figure 1 , 3 As shown, the inner wall of the sliding groove 201 is an inclined surface, and a pad 202 is installed on the inner wall of the sliding groove 201.

[0033] Because the inner wall of the sliding groove 201 is inclined, when the clamp head 403 moves downward, it will gradually move inward, that is, the clamp head moves inward along the assembly groove 402 to complete the clamping. At the same time, in order to ensure that the entire device can work stably for a long time, a pad 202 is installed to avoid damage from prolonged contact.

[0034] The flange 401 can be an annular or disc-shaped component, and the jaw plate 404 can be a wear-resistant component installed inside the tongs 403 to increase friction for engaging the drill bit. The connection between the jaw plate 404 and the tongs 403 can be bolted, welded, or snap-fitted; this application does not impose any special limitations on this method.

[0035] When the drill bit needs to be clamped, the lifting assembly 3 drives the bearing assembly 5 and the connected flange 401 to move downwards. Since the top of the tong head 403 is confined within the mounting groove 402 of the flange 401, the tong head 403 is forced to retract radially towards the center during descent, thereby causing the jaw plate 404 installed on its inner side to press against the drill bit surface, achieving clamping. Conversely, when the lifting assembly moves upwards, the tong head 403 opens.

[0036] Existing dental plates typically only have a tilt angle in one direction for teeth. This application improves upon this, such as... Figure 4 As shown, specifically, the inner side of the dental plate 404 is provided with two sets of teeth 405. The extension lines of the two sets of teeth 405 intersect, and the angle between the teeth 405 and the horizontal plane is 45 degrees. Through the two directions of mutually perpendicular teeth, it can withstand both the vertical gravity and the counter torque.

[0037] To protect internal components such as the jaw plate and for guidance, the clamping assembly 4 in this application also includes a central tube 406. The central tube 406 is disposed inside the rotating ring 2, and the central tube 406 has a clearance hole 407. The clearance hole 407 is preferably a rectangular hole, which facilitates the passage of components such as the pliers 403 and the jaw plate 404 for clamping the drill bit.

[0038] Because the clamp head 403 needs to move closer or outward during subsequent up-and-down movements, a protruding edge 408 is provided on the top of the clamp head 403. The protruding edge 408 cooperates with the mounting groove 402, which allows for horizontal sliding to complete the clamping.

[0039] Meanwhile, to ensure the stability of the drill string clamping, the number of clamping heads 403 in this application is at least three, which are spaced apart, thereby ensuring the stability of the drill string clamping.

[0040] This application not only achieves a clamping function but also a rotation function, specifically through a rotating component 1. This rotating component 1 can be an existing mechanism, as long as it can achieve rotation. Figure 6 As shown, the rotating component 1 includes: Outer shell 101; Driven gear 102 is disposed inside the housing 101; Turntable 103 is connected to the driven gear 102, and the rotating ring 2 is mounted on the turntable 103; The driving gear 104 is installed inside the housing 101, and the driving gear 104 meshes with the driven gear 102; A hydraulic motor 105 is mounted on the housing 101, and the output end of the hydraulic motor 105 is connected to the drive gear 104. The rotating component 1 in this application mainly drives the drive gear 104 through the hydraulic motor 105, which then drives the driven gear 102 to rotate, and finally drives the turntable 103 to rotate, thereby realizing the rotation of the rotating ring 2.

[0041] To achieve lifting and lowering, the clamping head 403 is brought closer together for clamping. The lifting assembly 3 includes: Mounting base 301 is disposed on the outside of the housing 101; The lifting hydraulic cylinder 302 is connected at its bottom to the mounting base 301; A connecting seat 303 is disposed on the outside of the bearing assembly 5, and the connecting seat 303 is mounted on the piston rod end of the lifting hydraulic cylinder 302.

[0042] The piston rod end of the lifting hydraulic cylinder 302 is provided with positive and negative nuts 304 between the connecting seat 303, which can adjust the diameter of the clamping.

[0043] Further explanation regarding this application: As a preferred embodiment, the solution of this application is specifically implemented as follows: This application is installed at the entrance of the rat hole at the oil drilling site. When the drill string is delivered to the slip position, the piston rod of the lifting hydraulic cylinder 302 moves down, causing the connecting seat 303 and bearing assembly 5 to move down. Due to the inclination of the sliding groove 201 of the rotating ring 2, the tong head 403 converges towards the center under the action of gravity and guiding force, and its inner jaw plate fits against the drill string to complete the clamping.

[0044] Start the rotating assembly. Driven by the hydraulic motor, turntable 103 rotates, which in turn drives rotating ring 2 to rotate, thus completing the rotational connection.

[0045] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A rotating mouse hole card, characterized in that, include: Rotating component (1); A rotating ring (2) is installed at the movable end of the rotating assembly (1); The lifting assembly (3) is installed on the outside of the rotating assembly (1); The clamping assembly (4) is located at its bottom inside the rotating ring (2); The bearing assembly (5) has its inner ring portion connected to the top of the clamping assembly (4) and its outer ring portion connected to the movable end of the lifting assembly (3).

2. The rotating mouse hole chuck according to claim 1, characterized in that, The inner wall of the rotating ring (2) is provided with a sliding groove (201). The clamping assembly (4) includes: Flange (401), wherein an assembly groove (402) is provided inside the flange (401); The top of the pliers (403) is disposed inside the assembly groove (402), and the bottom of the pliers (403) is disposed inside the sliding groove (201); The jaw plate (404) is installed on the inside of the pliers head (403).

3. The rotating mouse hole chuck according to claim 2, characterized in that, The inner wall of the sliding groove (201) is an inclined surface, and a pad (202) is installed on the inner wall of the sliding groove (201).

4. The rotating mouse hole chuck according to claim 2, characterized in that, The inner side of the dental plate (404) is provided with two sets of teeth (405), the extension lines of the two sets of teeth (405) intersect, and the angle between the teeth (405) and the horizontal plane is 45 degrees.

5. The rotating mouse hole chuck according to claim 2, characterized in that, The clamping assembly (4) also includes a central tube (406), which is disposed inside the rotating ring (2), and the central tube (406) is provided with a clearance hole (407).

6. The rotating mouse hole chuck according to claim 2, characterized in that, The top of the pliers head (403) is provided with a protruding edge (408), which engages with the mounting groove (402).

7. The rotating mouse hole chuck according to claim 2, characterized in that, The number of the clamps (403) is at least three.

8. The rotating mouse hole chuck according to claim 1, characterized in that, The rotating component (1) includes: Outer shell (101); Driven gear (102) is disposed inside the housing (101); A turntable (103) is connected to the driven gear (102), and the rotating ring (2) is mounted on the turntable (103). A drive gear (104) is installed inside the housing (101), and the drive gear (104) meshes with the driven gear (102); A hydraulic motor (105) is mounted on the housing (101), and the output end of the hydraulic motor (105) is connected to the drive gear (104).

9. The rotating mouse hole chuck according to claim 8, characterized in that, The lifting assembly (3) includes: Mounting base (301) is disposed on the outside of the housing (101); The lifting hydraulic cylinder (302) is connected at its bottom to the mounting base (301); A connecting seat (303) is disposed on the outside of the bearing assembly (5), and the connecting seat (303) is mounted on the piston rod end of the lifting hydraulic cylinder (302).

10. The rotating mouse hole chuck according to claim 9, characterized in that, A positive and negative nut (304) is provided between the piston rod end of the lifting hydraulic cylinder (302) and the connecting seat (303).

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