Mouse hole device with adjustable position

Abstract

The invention relates to a position-adjustable mousehole device which comprises a mousehole pipe and a driving mechanism for driving the mousehole pipe to move, and the mousehole pipe is arranged beside the center of a wellhead and used for storing a 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 invention is suitable for drilling machines and workover rigs with small drill floor space.

Description

Technical Field

[0001] The invention 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 rat hole device. Background Art

[0002] At present, when the drilling rig is being raised or lowered, the faucet and the square drill rod need to be inserted into the rat hole on the drilling table for storage. Since the faucet and the square drill rod are heavy and the center of the wellhead is far away from the rat hole, the labor intensity of pushing the faucet and the square drill rod from the center of the wellhead to the rat hole is high. In addition, the faucet occupies a large space on the drilling table, increasing the risk of collision between equipment.

[0003] The existing drilling table has a fixed rat hole position on the side, and multiple people are required to cooperate to insert the faucet and the square drill rod into the rat hole. The disadvantages are: 1. The rat hole is far from the center of the wellhead, and the labor intensity of inserting the faucet and the square drill rod into the rat hole is high; 2. The faucet and the square drill rod are easy to interfere with the wellhead equipment, the iron roughneck and the root area, which increases the safety hazards of equipment operation. Summary of the invention

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

[0005] The technical solution adopted by the present invention is: a rathole device with adjustable position, characterized in that it includes 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 the faucet and the square drill rod; the driving mechanism drives the rathole pipe to move to a side away from the center of the wellhead, thereby making room for the iron driller to operate.

[0006] Preferably, 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.

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

[0008] Preferably, a bottom plate and a buffer spring are provided at the bottom of the rat hole tube, the lower end of the buffer spring abuts against the bottom of the rat hole tube, and the upper end abuts 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.

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

[0010] Preferably, the driving mechanism comprises 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 present invention are as follows: by arranging a driving mechanism on the drilling table, the rathole pipe is driven to move by the driving mechanism, thereby freeing up operating space for the iron roughneck, avoiding interference between the faucet and the square drill rod and the wellhead equipment, the iron roughneck and the standpipe area, and reducing the hidden safety hazards of equipment operation; at the same time, the rathole pipe can be arranged at a place closer to the center of the wellhead, reducing the labor intensity of inserting the faucet and the square drill rod into the rat hole; the present invention is suitable for drilling rigs and well repair rigs with small drilling table space. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of the rat hole device of the present invention;

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

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

[0015] Figure 4 It is a schematic diagram of the structure of the rat hole device installed on the derrick;

[0016] In the figure: 1. rathole pipe; 11. guide pipe; 12. rotating shaft; 13. transport pin; 14. buffer spring; 15. slurry discharge port; 16. bottom plate; 161. slurry discharge hole; 2. driving mechanism; 21. oil cylinder; 22. fixed ear plate; 3. slide seat; 4. derrick; 41. drilling table; 411. slide rail; 5. fixed seat; 51. pin shaft; 6. root area; 7. iron roughneck; 8. faucet; 9. square drill rod; 91. roller core; 10. wellhead center. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1-4 As shown, a position-adjustable rathole device of the present invention comprises a rathole pipe 1 and a driving mechanism 2 for driving the rathole pipe 1 to move. The rathole pipe 1 is arranged beside the wellhead center 10 and is used to store a faucet 8 and a square drill rod 9. The driving mechanism 2 drives the rathole pipe 1 to move to a side away from the wellhead center 10, thereby making room for the iron roughneck 7 to operate, avoiding interference between the faucet 8 and the square drill rod 9 and the wellhead equipment, the iron roughneck 7 and the root area 6, thereby reducing the safety hazard of equipment operation. At the same time, the rathole pipe 1 can be arranged at a place closer to the wellhead center 10, thereby reducing the labor intensity of inserting the faucet 8 and the square drill rod 9 into the rat hole.

[0020] In this embodiment, the upper end of the rat hole 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 rat hole tube 1 to move, and the rat hole tube 1 moves along the slide rail 411 with the slide 3, and the rat hole tube 1 rotates along the rotating shaft 12 at the same time.

[0021] In this embodiment, the driving mechanism 2 pushes and pulls the rathole pipe 1 to rotate around the pin 51 of the fixing seat 5, and the rotating shaft 12 of the rathole pipe 1 drives the slide seat 3 to slide in the slide rail 411 of the drilling table 41. Due to the deadweight of the rathole pipe 1, the slide seat 3 always supports the rathole pipe 1. The shape of the slide rail 411 can be set according to the rotational motion trajectory of the rathole pipe 1, so that the slide seat 3 can always support the rathole pipe 1 during the movement of the rathole pipe 1.

[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 on the derrick 4 through a pin shaft 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, 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 part of the rathole pipe 1, which plays a role of limiting when the square drill rod is put in.

[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 table 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 exemplary, and this specification can be embodied in different forms and should not be interpreted as being limited to the technical solutions set forth herein. On the contrary, providing these descriptions will make the disclosure of the present invention thorough and complete, and will fully convey the scope disclosed in this specification to those skilled in the art. In addition, the technical solutions of the present invention are limited only by the scope of the claims.

[0027] Finally, it should be pointed out that the above embodiments are only representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention should be considered to belong to the protection scope of the present invention.

Claims

1. A position-adjustable rathole device, characterized in that: The invention comprises a rathole pipe and a driving mechanism for driving the rathole pipe to move. The rathole pipe is arranged beside the center of the wellhead and is used for storing a swivel and a square drill rod. The driving mechanism drives the rathole pipe to move to a side away from the center of the wellhead, thereby making room for the iron roughneck to operate.

2. The position-adjustable rat hole 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 with the slide seat, and the rathole tube rotates along the rotating shaft.

3. The position-adjustable rat hole 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 rat hole 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 abuts against the bottom of the rat hole tube, and the upper end abuts 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 rat hole 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 rat hole device according to claim 1, characterized in that: The driving mechanism comprises an oil cylinder, which is arranged on the side close to the wellhead center, 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 wellhead center.

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