Casing windowing whipstock

Abstract

The utility model relates to the field of petroleum drilling, and discloses a casing windowing whipstock which comprises a window repairing device, a guide pipe is arranged on the surface of the window repairing device, a pin is arranged on the surface of the guide pipe, a slip is arranged on the surface of the guide pipe, a guide structure is arranged in the guide pipe, the guide structure comprises an inclined pipe, and the inclined pipe is connected with the guide pipe. The inner wall of the guide pipe is in threaded connection with a threaded ring, one end of the threaded ring is fixedly connected with a disc, the other end of the threaded ring is hinged to a sliding seat, an insertion hole is formed in the surface of the disc, and a sliding groove is formed in the side wall of the inclined pipe. According to the utility model, the guide structure is arranged, so that the window opening angle can be changed without carrying and replacing a plurality of deflecting plates with different inclination angles, the abrasion between the pipe wall and the window repairing device is reduced, the service life of equipment is prolonged, the operation of the window repairing device is quicker and more accurate, and the working efficiency and the working flexibility are improved.

Description

Technical Field

[0001] The utility model relates to the field of petroleum drilling, in particular to a casing window whipstock. Background Art

[0002] The purpose of casing windowing is to create artificial gaps or holes on the oil well casing, so that oil and gas can enter the casing through these openings, which is convenient for mining and production, and can help oil wells to mine and produce oil and gas resources. When opening casing windows, a casing window whipstock is required. The casing window whipstock is a special tool used in oil and gas drilling. It is mainly used for drilling and opening windows inside the casing. The function of this tool is to mill an oblique and long window on the inner wall of the casing so that a new wellbore can be drilled from the side of the window, thereby realizing further development of the oil and gas reservoir.

[0003] After searching, Chinese patent announcement number: CN212642591U discloses a casing window opening whipstock, which realizes the replacement of the second slide groove by replacing different whipstock plates, so that the inclination angle of the whipstocking surface can be changed under the action of the second slide groove and the connecting block, guide block and guide groove at different inclination angles, so that the inclination angle of the whipstocking surface can be changed according to the specific needs of drilling window opening, and has good flexibility in adjusting the window opening angle, which can better meet the needs of drilling window opening.

[0004] In the above technical solution, the window repairer can meet different window opening requirements by replacing different beveling plates. However, when opening a window on a casing, it is necessary to carry multiple beveling plates with different angles. Replacing the beveling plates will extend the time of the entire window opening operation. Carrying and using multiple beveling plates may increase material costs and maintenance costs, thereby increasing the complexity of the operation and the requirements for the operator's skills, and reducing work efficiency and work flexibility. Therefore, a casing window opening beveling device is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a casing window opening and beveling device, which aims to improve the problem in the existing technology that the casing window opening and beveling device cannot change the inclination angle of the beveling assembly in the guide tube, which requires replacing the beveling plate, resulting in increased cumbersome operation and reduced work efficiency.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a casing window opening and beveling device, including a window repairer, a guide tube is provided on the surface of the window repairer, a pin is provided on the surface of the guide tube, a slip is provided on the surface of the guide tube, a guide structure is provided inside the guide tube, the guide structure includes an inclined tube, the inner wall of the guide tube is threadedly connected to a threaded ring, one end of the threaded ring is fixedly connected to a disc, the other end of the threaded ring is hinged to a sliding seat, a socket is provided on the surface of the disc, a sliding groove is provided on the side wall of the inclined tube, and a guide assembly is provided on the surface of the inclined tube.

[0007] As a further description of the above technical solution:

[0008] An arcuate groove is provided on the side wall of the inclined tube. A connecting seat is slidably connected to the interior of the arcuate groove. A support rod is rotatably connected to the surface of the connecting seat. An end of the support rod away from the connecting seat is rotatably connected to a matching block.

[0009] As a further description of the above technical solution:

[0010] The outer wall of the top end of the inclined tube is hinged to the inner wall of the guide tube, and the disc is located outside the guide tube.

[0011] As a further description of the above technical solution:

[0012] The side of the sliding seat away from the threaded ring is slidably connected to the inner wall of the sliding groove.

[0013] As a further description of the above technical solution:

[0014] The guide assembly includes a groove, the inner wall of the groove is fixedly connected to a rotating shaft, and the outer wall of the rotating shaft is rotatably connected to a guide roller.

[0015] As a further description of the above technical solution:

[0016] The groove is formed on the outer wall of the inclined tube away from the chute, and the groove is located on the inclined surface of the inclined tube.

[0017] As a further description of the above technical solution:

[0018] The inner wall of the guide tube is provided with a notch matching the arc-shaped groove on the surface of the inclined tube, and the end of the matching block away from the support rod is slidably connected to the inside of the notch of the guide tube.

[0019] As a further description of the above technical solution:

[0020] The arc angle of the arc groove is set toward the inclined surface of the inclined tube.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, the tilting tube can switch the tilting angle inside the guide tube by being provided with a disc, a socket, a threaded ring, a sliding seat, and a sliding groove. In combination with the guide assembly, the window repairer can be conveniently used to perform window opening operations at different angles. The window opening angle of the window repairer can be adjusted without carrying a plurality of tilting plates with different tilting angles for replacement. At the same time, the static friction generated by the window repairer during the window opening process is converted into rolling friction, thereby reducing the wear between the tube wall and the window repairer, extending the service life of the equipment, making the operation of the window repairer faster and more accurate, and improving work efficiency and flexibility.

[0023] 2. In the present invention, the arc groove, the connecting seat, the support rod and the matching block are provided so that the tilting tube can provide a certain supporting force when adjusting the tilting angle, thereby ensuring the stability of the tilting tube in guiding the window repairer in the guide tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a right side schematic diagram of the main structure of a casing window whipstock proposed in the utility model;

[0025] Figure 2 This is a left side schematic diagram of the main structure of a casing window whipstock proposed in the utility model;

[0026] Figure 3 A casing window whipstock proposed in this utility model Figure 2 A magnified schematic diagram of area A in the middle;

[0027] Figure 4 This is a left side schematic diagram of the inclined tube structure of a casing window whipstock proposed in the present invention;

[0028] Figure 5 This is a right side schematic diagram of the inclined tube structure of a casing window whipstock proposed in the utility model.

[0029] Legend:

[0030] 1. Window repairer; 2. Guide tube; 3. Pin; 4. Slip; 5. Tilt tube; 6. Disc; 7. Socket; 8. Threaded ring; 9. Slide seat; 10. Slide groove; 11. Groove; 12. Rotating shaft; 13. Guide roller; 14. Arc groove; 15. Connecting seat; 16. Support rod; 17. Matching block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1-Figure 3 The utility model provides an embodiment of a casing window whipstock, comprising a window repair device 1, a guide tube 2 is provided on the surface of the window repair device 1, a pin 3 is provided on the surface of the guide tube 2, a slip 4 is provided on the surface of the guide tube 2, a guide structure is provided inside the guide tube 2, the guide structure comprises an inclined tube 5, the inner wall of the guide tube 2 is threadedly connected with a threaded ring 8, one end of the threaded ring 8 is fixedly connected to a disc 6, and the other end of the threaded ring 8 is hingedly connected to a slide 9. The slide 9 determines the area of ​​movement of the slide 9 in the slide groove 10 by the depth of the threaded ring 8 inside the guide tube 2. The surface of the disc 6 is provided with a socket 7, and the socket 7 is provided in a plurality of groups, and the plurality of sockets 7 are equidistantly distributed on the surface of the disc 6. The socket 7 facilitates the insertion of an external iron rod, and the threaded ring 8 is driven to rotate forward or reversely by the principle of leverage. The side wall of the inclined tube 5 is provided with a slide groove 10, and the surface of the inclined tube 5 is provided with a guide assembly.

[0033] Reference Figure 3-Figure 5 The outer wall of the top end of the inclined tube 5 is hinged to the inner wall of the guide tube 2, the disc 6 is located on the outside of the guide tube 2, and the side of the slide 9 away from the threaded ring 8 is slidably connected to the inner wall of the slide groove 10. The guide assembly includes a groove 11, which is located on the inclined surface of the inclined tube 5. The groove 11 is opened on the outer wall of the inclined tube 5 away from the slide groove 10. The inner wall of the groove 11 is fixedly connected to the rotating shaft 12, and the outer wall of the rotating shaft 12 is rotatably connected to the guide roller 13. The guide roller 13 and the rotating shaft 12 are provided in several groups, and the several groups of guide rollers 13 are equidistant from the rotating shaft 12 in the groove 11. When the guide roller 13 contacts the window repairer 1, it rotates to provide a guiding function for the window repairer 1.

[0034] Reference Figure 4-Figure 5 The side wall of the inclined tube 5 is provided with an arc-shaped groove 14, and the arc angle of the arc-shaped groove 14 is set toward the inclined surface of the inclined tube 5. The inside of the arc-shaped groove 14 is slidably connected with a connecting seat 15, and the surface of the connecting seat 15 is rotatably connected with a support rod 16. The end of the support rod 16 away from the connecting seat 15 is rotatably connected with a matching block 17. The inner wall of the guide tube 2 is provided with a notch matching the arc-shaped groove 14 on the surface of the inclined tube 5, and the end of the matching block 17 away from the support rod 16 is slidably connected to the inside of the notch of the guide tube 2. When the inclination angle of the inclined tube 5 changes, the connecting seat 15 slides inside the arc-shaped groove 14, and the matching block 17 is pulled and moved in the notch of the guide tube 2 by the support rod 16.

[0035] Working principle: put the guide tube 2 and the window repairer 1 vertically into the casing, the valve inside the window repairer 1 pushes out the pin 3, and the window repairer 1 will slide downward under the influence of gravity. The window repairer 1 contacts multiple sets of parallel guide rollers 13 on the way down, so that the static friction between the window repairer 1 and the tilting tube 5 is converted into rolling friction, reducing the wear between the tube wall and the window repairer 1 and extending the service life of the equipment. The rolling friction can make the movement of the window repairer 1 smoother and reduce the vibration and noise caused by uneven friction. When the window opening angle of the window repairer 1 needs to be changed, first use the external cylindrical iron rod to insert into the inside of the socket 7, and use the lever to adjust the opening angle. The rod principle drives the disc 6 to continue to rotate forward or reverse, so that the threaded ring 8 approaches or moves away from the tilting tube 5, and the slide seat 9 slides inside the slide groove 10 to adjust the tilting angle of the tilting tube 5 inside the guide tube 2. When the tilting tube 5 moves, the connecting seat 15 will slide inside the arc groove 14. At the same time, due to the setting of the support rod 16, the matching block 17 moves inside the guide tube 2 at the same time, providing auxiliary support when adjusting the tilting angle of the tilting tube 5, thereby facilitating the window repairer 1 to open windows according to the tilting tube 5 at different angles, and then there is no need to replace the tilting plates with different tilting amplitudes to increase the cumbersomeness of replacement, providing better flexibility in adjusting the window opening angle.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A casing window whipstock, comprising a window repairer (1), a guide tube (2) provided on the surface of the window repairer (1), a pin (3) provided on the surface of the guide tube (2), and a slip (4) provided on the surface of the guide tube (2), characterized in that: A guide structure is provided inside the guide tube (2), and the guide structure includes an inclined tube (5). The inner wall of the guide tube (2) is threadedly connected to a threaded ring (8), one end of the threaded ring (8) is fixedly connected to a disc (6), and the other end of the threaded ring (8) is hinged to a slide seat (9). A socket (7) is provided on the surface of the disc (6), a sliding groove (10) is provided on the side wall of the inclined tube (5), and a guide component is provided on the surface of the inclined tube (5).

2. The casing window whipstock according to claim 1, characterized in that: The side wall of the inclined tube (5) is provided with an arc-shaped groove (14), the interior of the arc-shaped groove (14) is slidably connected to a connecting seat (15), the surface of the connecting seat (15) is rotatably connected to a support rod (16), and the end of the support rod (16) away from the connecting seat (15) is rotatably connected to a matching block (17).

3. The casing window whipstock according to claim 1, characterized in that: The outer wall of the top end of the inclined tube (5) is hinged to the inner wall of the guide tube (2), and the disc (6) is located outside the guide tube (2).

4. The casing window whipstock according to claim 1, characterized in that: The side of the slide seat (9) away from the threaded ring (8) is slidably connected to the inner wall of the slide groove (10).

5. The casing window whipstock according to claim 1, characterized in that: The guide assembly comprises a groove (11), the inner wall of the groove (11) is fixedly connected to a rotating shaft (12), and the outer wall of the rotating shaft (12) is rotatably connected to a guide roller (13).

6. The casing window whipstock according to claim 5, characterized in that: The groove (11) is formed on the outer wall of the inclined tube (5) on a side away from the chute (10), and the groove (11) is located on the inclined surface of the inclined tube (5).

7. The casing window whipstock according to claim 2, characterized in that: The inner wall of the guide tube (2) is provided with a notch that matches the arc-shaped groove (14) on the surface of the inclined tube (5), and the end of the matching block (17) away from the support rod (16) is slidably connected to the inside of the notch of the guide tube (2).

8. The casing window whipstock according to claim 2, characterized in that: The arc angle of the arc groove (14) is set toward one side of the inclined surface of the inclined tube (5).

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