Mouse hole device with adjustable position

Abstract

The utility model relates to a position-adjustable mouse hole device which comprises a mouse hole pipe and a driving mechanism for driving the mouse hole pipe to move, and the mouse hole pipe is arranged beside the center of a well mouth and used for storing a water faucet and a kelly bar. The driving mechanism drives the mouse hole pipe to move towards the side away from the center of the well mouth, and therefore operation space is reserved for the iron roughneck. The driving mechanism is arranged on the drill floor surface, the mousehole pipe is driven by the driving mechanism to move, an operation space is avoided for an iron roughneck, interference of a faucet and a kelly bar with wellhead equipment, the iron roughneck and a three-joint unit area is avoided, and potential safety hazards of equipment operation are reduced; meanwhile, the rat hole pipe can be arranged at a position close to the center of the well mouth, so that the labor intensity of inserting the water faucet and the kelly bar into the rat hole is reduced; the utility model is suitable for drilling machines and workover rigs with smaller drill floor space.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas well drilling and production in oil and gas fields, and in particular to a position-adjustable rathole device. Background Art

[0002] Currently, when a drilling rig is being pulled up or down, the faucet and square drill rod need to be inserted into a rat hole on the drill floor for storage. Due to the heavy weight of the faucet and square drill rod and the large distance between the wellhead center and the rat hole, pushing the faucet and square drill rod from the wellhead center to the rat hole is labor-intensive. Furthermore, the faucet occupies a large space on the drill floor, increasing the risk of collision between equipment.

[0003] The existing drill floor features a fixed rathole on the side, requiring the coordination of multiple personnel to insert the faucet and kelly into the rathole. This system has several drawbacks: 1. The rathole is located far from the wellhead center, making insertion of the faucet and kelly labor-intensive; 2. The faucet and kelly easily interfere with wellhead equipment, the roughneck, and the standpipe, increasing operational safety risks. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a mouse hole device with adjustable position to reduce the safety risk of collision between devices.

[0005] The technical solution adopted by the utility model is: a position-adjustable rathole device, characterized in that it comprises a rathole pipe and a driving mechanism for driving the rathole pipe to move, the rathole pipe being arranged near the center of the wellhead and used for storing a swivel and a kelly; the driving mechanism drives the rathole pipe to move away from the center of the wellhead, thereby making operating space for an iron roughneck.

[0006] Preferably, the upper end of the rathole tube is set on a slide through a rotating shaft, and the slide is set in a slide rail of the drilling table; the driving mechanism drives the rathole tube to move, and the rathole tube moves along the slide rail together with the slide, and the rathole tube rotates along the rotating shaft.

[0007] Preferably, the lower end of the mousehole pipe is sleeved on a fixing seat, and the fixing seat is hinged to the derrick through a pin.

[0008] Preferably, a bottom plate and a buffer spring are provided at the bottom of the rathole tube, the lower end of the buffer spring rests against the bottom of the rathole tube, and the upper end rests against the lower end surface of the bottom plate; a slurry discharge hole is provided in the middle of the bottom plate, and an axially penetrating slurry discharge port is provided at the bottom of the rathole tube.

[0009] Preferably, a radially penetrating transport pin is provided at the lower portion of the rathole tube.

[0010] Preferably, the driving mechanism includes an oil cylinder, which is arranged on the side close to the center of the wellhead, one end of which is arranged on the drilling table through a fixed ear plate, and the other end is connected to the upper part of the rathole pipe; the oil cylinder drives the rathole pipe away from or close to the center of the wellhead.

[0011] The beneficial effects achieved by the utility model are as follows: by providing a driving mechanism on the drill floor, the rathole pipe is driven to move by the driving mechanism, thereby freeing up operating space for the iron roughneck, avoiding interference between the swivel and the kelly and the wellhead equipment, the iron roughneck and the stand area, and reducing safety hazards in equipment operation; at the same time, the rathole pipe can be set closer to the center of the wellhead, reducing the labor intensity of inserting the swivel and the kelly into the rathole; the utility model is suitable for drilling rigs and well repair rigs with smaller drill floor spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of the rat hole device of the present utility model;

[0013] Figure 2 This is a schematic diagram of the position adjustment of the rat hole device;

[0014] Figure 3 This is a schematic diagram of the structure of the rathole tube;

[0015] Figure 4 This is a schematic diagram of the structure of the rathole device installed on the derrick;

[0016] In the figure: 1. Rathole pipe; 11. Guide tube; 12. Rotating shaft; 13. Transport pin; 14. Buffer spring; 15. Slurry discharge port; 16. Bottom plate; 161. Slurry discharge hole; 2. Driving mechanism; 21. Cylinder; 22. Fixed ear plate; 3. Slide seat; 4. Derrick; 41. Drilling table; 411. Slide rail; 5. Fixed seat; 51. Pin shaft; 6. Root stand area; 7. Iron roughneck; 8. Faucet; 9. Kelly rod; 91. Roller core packing; 10. Wellhead center. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0018] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0019] like Figure 1-4 As shown, the present invention provides an adjustable position rathole device, comprising a rathole tube 1 and a drive mechanism 2 for driving the rathole tube 1. The rathole tube 1 is disposed near the wellhead center 10 and is used to store a faucet 8 and a kelly 9. The drive mechanism 2 drives the rathole tube 1 to move away from the wellhead center 10, thereby freeing up operating space for the iron roughneck 7, avoiding interference between the faucet 8 and the kelly 9 and the wellhead equipment, the iron roughneck 7, and the standpipe area 6, and reducing safety hazards during equipment operation. Furthermore, the rathole tube 1 can be disposed closer to the wellhead center 10, reducing the labor intensity of inserting the faucet 8 and the kelly 9 into the rathole.

[0020] In this embodiment, the upper end of the rathole tube 1 is set on the slide 3 through the rotating shaft 12, and the slide 3 is set in the slide rail 411 of the drilling table 41; the driving mechanism 2 drives the rathole tube 1 to move, and the rathole tube 1 moves along the slide rail 411 together with the slide 3, and the rathole tube 1 rotates along the rotating shaft 12.

[0021] In this embodiment, the drive mechanism 2 pushes and pulls the rathole tube 1 to rotate about the pin 51 of the fixed base 5. The rotating shaft 12 of the rathole tube 1 drives the slide 3 to slide within the slide rail 411 of the drilling table 41. Due to the weight of the rathole tube 1, the slide 3 always supports the rathole tube 1. The shape of the slide rail 411 can be set according to the rotational motion trajectory of the rathole tube 1, so that the slide 3 can always support the rathole tube 1 during its movement.

[0022] In this embodiment, the lower end of the rathole pipe 1 is sleeved on the fixing seat 5, and the fixing seat 5 is hinged to the derrick 4 through a pin 51.

[0023] In this embodiment, the rathole pipe 1 includes a guide tube 11, a rotating shaft 12 is provided on the upper part of the guide tube 11, a bottom plate 16 and a buffer spring 14 are provided at the bottom of the guide tube 11, and the buffer spring 14 is sleeved on the guide column. The lower end of the buffer spring 14 abuts against the bottom of the guide tube 11, and the upper end abuts against the lower end surface of the bottom plate 16; a slurry discharge hole 161 is provided in the middle of the bottom plate 16, and an axially penetrating slurry discharge port 15 is provided at the bottom of the guide tube 11. After the square drill rod is placed, the mud water can be discharged from the rathole pipe 1 along the slurry discharge hole 161 and the slurry discharge port 15.

[0024] In this embodiment, a radially penetrating transport pin 13 is provided at the lower portion of the rathole pipe 1, which serves as a position limiter when the kelly drill rod is placed.

[0025] In this embodiment, the driving mechanism 2 includes a cylinder 21, which is arranged on the side close to the wellhead center 10, one end of which is arranged on the drilling floor 41 through a fixed ear plate 22, and the other end is connected to the upper part of the rathole pipe 1; the cylinder 21 drives the rathole pipe 1 away from or close to the wellhead center 10.

[0026] It should be noted that the description of the above technical solutions is illustrative only. This specification may be embodied in various forms and should not be construed as limiting the technical solutions set forth herein. Rather, these descriptions are provided to ensure that the disclosure of this utility model is thorough and complete and to fully convey the scope of this specification to those skilled in the art. Furthermore, the technical solutions of this utility model are limited only by the scope of the claims.

[0027] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and is susceptible to numerous variations. Any simple modifications, equivalent variations, and modifications to the above embodiments based on the technical essence of the present invention shall be deemed to fall within the scope of protection of the present invention.

Claims

1. A position-adjustable rathole device, characterized by: The invention comprises a rathole pipe and a driving mechanism for driving the rathole pipe to move. The rathole pipe is arranged near the center of the wellhead and is used to store a swivel and a kelly. The driving mechanism drives the rathole pipe to move away from the center of the wellhead, thereby making room for the iron roughneck to operate.

2. The position-adjustable rathole device according to claim 1, characterized in that: The upper end of the rathole tube is arranged on a slide seat through a rotating shaft, and the slide seat is arranged in a slide rail of the drilling table; the driving mechanism drives the rathole tube to move, and the rathole tube moves along the slide rail together with the slide seat, and the rathole tube rotates along the rotating shaft.

3. The position-adjustable rathole device according to claim 1, characterized in that: The lower end of the mousehole pipe is sleeved on a fixing seat, and the fixing seat is hinged on the derrick through a pin shaft.

4. The position-adjustable rathole device according to claim 1, characterized in that: A bottom plate and a buffer spring are provided at the bottom of the rat hole tube. The lower end of the buffer spring rests against the bottom of the rat hole tube, and the upper end rests against the lower end surface of the bottom plate. A slurry discharge hole is provided in the middle of the bottom plate, and an axially penetrating slurry discharge port is provided at the bottom of the rat hole tube.

5. The position-adjustable rathole device according to claim 1, characterized in that: A radially penetrating transport pin is provided at the lower portion of the rathole tube.

6. The position-adjustable rathole device according to claim 1, characterized in that: The driving mechanism includes an oil cylinder, which is arranged on the side close to the center of the wellhead, one end of which is arranged on the drilling floor through a fixed ear plate, and the other end is connected to the upper part of the rathole pipe; the oil cylinder drives the rathole pipe away from or close to the center of the wellhead.

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