Fracturing sliding sleeve and fracturing sliding sleeve group of oil and gas well

Abstract

The fracturing sliding sleeve and the fracturing sliding sleeve set comprise the fracturing sliding sleeve, fracturing holes are formed in the outer side of the fracturing sliding sleeve at equal intervals, an inner sliding cylinder is connected into the fracturing sliding sleeve in a sliding mode, connecting holes are formed in the outer side of the inner sliding cylinder at equal intervals, and a blocking ball is arranged in the inner sliding cylinder. Fixing blocks are symmetrically and fixedly connected to the outer side of the fracturing sliding sleeve, sliding seats are slidably connected to the interiors of the fixing blocks, and clamping blocks are fixedly connected to one sides of the sliding seats; according to the fracturing sliding sleeve and the fracturing sliding sleeve set of the oil and gas well, the fracturing sliding sleeve, the fracturing hole, the inner sliding barrel, the connecting hole and the blocking ball are arranged, so that the function of conducting fracturing operation in a ball throwing pressure building mode is achieved, and operation is convenient and fast; through the arrangement of the threaded rod, the sliding plate, the connecting plate, the push rod, the sliding seat, the clamping block, the connecting block and the fixing groove, the function of quickly disassembling and assembling the upper connector is achieved, a large-drift-diameter connector is convenient to replace, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of fracturing sliding sleeve groups, in particular to a fracturing sliding sleeve and a fracturing sliding sleeve group for oil and gas wells. Background Art

[0002] The fracturing sleeve group is a tool used in oil and gas well operations, mainly used to achieve staged fracturing operations in oil and gas wells. It controls the flow of fracturing fluid by opening and closing the sleeve, thereby achieving effective transformation of the formation.

[0003] The Chinese utility model patent application number: CN202021472273.3 discloses a ball seat and a fracturing sleeve for a fracturing sleeve. The ball seat and the fracturing sleeve have a reasonable structure and are easy to use. By changing the size of the fracturing ball assembly, the size of the fracturing fluid discharge port can be adjusted to meet the fracturing requirements in different situations.

[0004] While the aforementioned patent achieves the function of assisting the use of a fracturing sleeve, it suffers from the following drawbacks: the ball seat and joints for the fracturing sleeve are fixed during use, allowing them to connect only to pipes of a single diameter. To accommodate a larger diameter pipe to meet different flow requirements, the entire fracturing sleeve must be replaced, which is inconvenient. Therefore, we propose a fracturing sleeve and fracturing sleeve assembly for oil and gas wells. Utility Model Content

[0005] In response to the deficiencies in the prior art, the utility model provides a fracturing sleeve and a fracturing sleeve assembly for oil and gas wells, which solves the problem that the ball seat and the joint of the fracturing sleeve are fixed when in use and can only be connected to pipes of a single diameter. When a larger diameter pipe needs to be replaced to meet different flow requirements, the entire fracturing sleeve needs to be replaced.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The cam is fixedly mounted on the outside of the cam and is secured to the bottom of the cam, and the cam has a locking plate on one side for locking the cam in place and the locking cam is secured to the bottom of the cam.

[0008] Preferably, the inside of the fracturing sleeve is symmetrically fixedly connected with a fixed rod, the outside of the fixed rod is slidably connected to a limiting block, the inner slide is fixedly connected to the limiting block, and a spring is provided on the outside of the fixed rod and on one side of the limiting block. The limiting block is driven by the spring to move and reset. The setting of the fixed rod and the limiting block can limit the movement of the inner slide to prevent deviation.

[0009] Preferably, the fixed block is fixedly connected to a limiting rod inside, the limiting rod is slidably connected to a slider outside, and the sliding seat is fixedly connected to the slider. The setting of the limiting rod and the slider can limit the movement of the sliding seat to prevent deviation.

[0010] Preferably, the interior of the fixed block is fixedly connected to a fixed plate, the interior of the fixed plate is slidably connected to a connecting plate, one side of the connecting plate is fixedly connected to a push rod, and the interior of the sliding seat is provided with an inclined groove for use with the push rod. The movement of the connecting plate drives the push rod to move, thereby cooperating with the inclined groove, so that the push rod squeezes and drives the sliding seat to slide.

[0011] Preferably, one end of the connecting plate is fixedly connected to a sliding plate, the interior of the fixed block is rotatably connected to a threaded rod, the sliding plate is threadedly connected to the threaded rod, and the sliding plate is driven to move by the rotation of the threaded rod.

[0012] Preferably, the top of the fixing block is threadedly connected to a protective cover, and the provision of the protective cover can protect the knob of the threaded rod.

[0013] Preferably, a lower joint is fixedly connected to the bottom of the fracturing sleeve, and a delivery pipe is installed at one end of the lower joint. The arrangement of the lower joint and the delivery pipe can assist in the fracturing operation.

[0014] The utility model provides a fracturing sleeve and a fracturing sleeve assembly for oil and gas wells. Compared with the prior art, it has the following beneficial effects:

[0015] 1. The fracturing sleeve and fracturing sleeve assembly of the oil and gas well realize the function of fracturing operation by using the method of throwing balls to hold pressure by arranging the fracturing sleeve, fracturing hole, inner slide tube, connecting hole and plugging ball, which is convenient to operate.

[0016] 2. The fracturing sleeve and fracturing sleeve assembly of the oil and gas well realize the function of rapid disassembly and assembly of the upper joint by setting the threaded rod, sliding plate, connecting plate, push rod, sliding seat, clamping block, connecting block and fixing groove, which is convenient for replacing large-diameter joints and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a structural diagram of the utility model fracturing sliding sleeve;

[0019] Figure 3 This is a schematic diagram of the internal structure of the fracturing sliding sleeve of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the fixed block of the utility model;

[0021] Figure 5 It is a structural diagram of the sliding seat of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the upper joint of the utility model.

[0023] In the figure: 1. Fracturing sleeve; 2. Lower joint; 3. Fracturing hole; 4. Upper joint; 5. Protective cover; 6. Fixed block; 7. Fixed rod; 8. Limit block; 9. Spring; 10. Ball blocking; 11. Inner slide; 12. Connecting hole; 13. Limit rod; 14. Slider; 15. Block; 16. Sliding seat; 17. Fixed plate; 18. Connecting plate; 19. Threaded rod; 20. Push rod; 21. Inclined groove; 22. Sliding plate; 23. Connecting block; 24. Fixed groove; 25. Delivery pipe. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figures 1 to 6 , the utility model provides a technical solution:

[0026] A fracturing sleeve and a fracturing sleeve assembly for an oil and gas well, comprising a fracturing sleeve 1, wherein the outer side of the fracturing sleeve 1 is provided with fracturing holes 3 at equal intervals, an inner slide tube 11 is slidably connected to the inside of the fracturing sleeve 1, and connection holes 12 are equidistantly opened on the outer side of the inner slide tube 11, a blocking ball 10 is provided inside the inner slide tube 11, a fixed block 6 is symmetrically fixedly connected to the outer side of the fracturing sleeve 1, a sliding seat 16 is slidably connected to the inner side of the fixed block 6, a clamping block 15 is fixedly connected to one side of the sliding seat 16, an upper joint 4 is provided on the top of the fracturing sleeve 1, and the outer side of the upper joint 4 is symmetrically fixed. It is connected with a connecting block 23, and a fixing groove 24 for use with the clamping block 15 is opened inside the connecting block 23; when in use, the function of performing fracturing operation by throwing balls to hold pressure is realized through the setting of the inner slide 11 and the blocking ball 10, so that the connecting hole 12 and the fracturing hole 3 are connected, which is convenient for fracturing operation and easy to operate. The movement of the sliding seat 16 drives the clamping block 15 to move, so that the clamping block 15 moves into the interior of the fixing groove 24, thereby locking the position of the connecting block 23, which is convenient for installation of the upper joint 4.

[0027] Furthermore, the inside of the fracturing sleeve 1 is symmetrically fixedly connected with a fixed rod 7, the outside of the fixed rod 7 is slidably connected with a limit block 8, the inner slide 11 is fixedly connected to the limit block 8, and a spring 9 is provided on the outside of the fixed rod 7 and on one side of the limit block 8. The limit block 8 is driven by the spring 9 to move and reset. The setting of the fixed rod 7 and the limit block 8 can limit the movement of the inner slide 11 to prevent deviation.

[0028] Furthermore, the interior of the fixed block 6 is fixedly connected to a limiting rod 13, the outer side of the limiting rod 13 is slidably connected to a slider 14, and the sliding seat 16 is fixedly connected to the slider 14. The setting of the limiting rod 13 and the slider 14 can limit the movement of the sliding seat 16 to prevent deviation.

[0029] Furthermore, the interior of the fixed block 6 is fixedly connected to a fixed plate 17, the interior of the fixed plate 17 is slidably connected to a connecting plate 18, a push rod 20 is fixedly connected to one side of the connecting plate 18, and the interior of the sliding seat 16 is provided with an inclined groove 21 for use with the push rod 20. The movement of the connecting plate 18 drives the push rod 20 to move, thereby cooperating with the inclined groove 21, so that the push rod 20 squeezes and drives the sliding seat 16 to slide.

[0030] Furthermore, one end of the connecting plate 18 is fixedly connected to a sliding plate 22 , and the interior of the fixed block 6 is rotatably connected to a threaded rod 19 . The sliding plate 22 is threadedly connected to the threaded rod 19 , and the rotation of the threaded rod 19 drives the sliding plate 22 to move.

[0031] Furthermore, a protective cover 5 is threadedly connected to the top of the fixing block 6 , and the setting of the protective cover 5 can protect the knob of the threaded rod 19 .

[0032] Furthermore, a lower joint 2 is fixedly connected to the bottom of the fracturing sleeve 1 , and a delivery pipe 25 is installed at one end of the lower joint 2 . The arrangement of the lower joint 2 and the delivery pipe 25 can assist in the fracturing operation.

[0033] During use, the function of fracturing operation by throwing balls to hold pressure is realized through the setting of the inner slide 11 and the blocking ball 10, so that the connecting hole 12 is connected with the fracturing hole 3, which is convenient for fracturing operation and easy to operate. When the upper joint 4 needs to be replaced, the protective cover 5 is unscrewed and the threaded rod 19 is rotated. The rotation of the threaded rod 19 drives the sliding plate 22 to move, and the sliding plate 22 drives the connecting plate 18 to move, and the connecting plate 18 drives the push rod 20 to slide, thereby cooperating with the inclined groove 21, so that the push rod 20 squeezes and drives the sliding seat 16 to slide, and the sliding seat 16 drives the block 15 to move out of the fixed groove 24, releasing the locking state of the connecting block 23, and the upper joint 4 can be removed, which is convenient for replacement and use.

[0034] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fracturing sleeve and a fracturing sleeve assembly for an oil and gas well, comprising a fracturing sleeve (1), characterized in that: The outer side of the fracturing sleeve (1) is provided with fracturing holes (3) at equal intervals, the inner side of the fracturing sleeve (1) is slidably connected to an inner slide (11), the outer side of the inner slide (11) is provided with connecting holes (12) at equal intervals, the inner side of the inner slide (11) is provided with a blocking ball (10), the outer side of the fracturing sleeve (1) is symmetrically fixedly connected to a fixed block (6), the inner side of the fixed block (6) is slidably connected to a sliding seat (16), one side of the sliding seat (16) is fixedly connected to a clamping block (15), the top of the fracturing sleeve (1) is provided with an upper joint (4), the outer side of the upper joint (4) is symmetrically fixedly connected to a connecting block (23), and the interior of the connecting block (23) is provided with a fixing groove (24) used in conjunction with the clamping block (15).

2. The fracturing sleeve and fracturing sleeve assembly for an oil and gas well according to claim 1, characterized in that: The interior of the fracturing sleeve (1) is symmetrically fixedly connected to a fixing rod (7), the outer side of the fixing rod (7) is slidably connected to a limiting block (8), the inner slide cylinder (11) is fixedly connected to the limiting block (8), and a spring (9) is sleeved on the outer side of the fixing rod (7) and located on one side of the limiting block (8).

3. The fracturing sleeve and fracturing sleeve assembly for oil and gas wells according to claim 1, characterized in that: The interior of the fixed block (6) is fixedly connected to a limiting rod (13), the exterior of the limiting rod (13) is slidably connected to a slider (14), and the sliding seat (16) is fixedly connected to the slider (14).

4. The fracturing sleeve and fracturing sleeve assembly for an oil and gas well according to claim 1, characterized in that: The interior of the fixed block (6) is fixedly connected to a fixed plate (17), the interior of the fixed plate (17) is slidably connected to a connecting plate (18), one side of the connecting plate (18) is fixedly connected to a push rod (20), and the interior of the sliding seat (16) is provided with an inclined groove (21) for use with the push rod (20).

5. The fracturing sleeve and fracturing sleeve assembly for oil and gas wells according to claim 4, characterized in that: One end of the connecting plate (18) is fixedly connected to a sliding plate (22), the interior of the fixed block (6) is rotatably connected to a threaded rod (19), and the sliding plate (22) is threadedly connected to the threaded rod (19).

6. The fracturing sleeve and fracturing sleeve assembly for an oil and gas well according to claim 1, characterized in that: The top of the fixing block (6) is threadedly connected to a protective cover (5).

7. The fracturing sleeve and fracturing sleeve assembly for oil and gas wells according to claim 6, characterized in that: The bottom of the fracturing sleeve (1) is fixedly connected to a lower joint (2), and one end of the lower joint (2) is installed with a delivery pipe (25).

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