CN219932135U - Switch type well cementation sliding sleeve - Google Patents
Switch type well cementation sliding sleeve Download PDFInfo
- Publication number
- CN219932135U CN219932135U CN202321127876.3U CN202321127876U CN219932135U CN 219932135 U CN219932135 U CN 219932135U CN 202321127876 U CN202321127876 U CN 202321127876U CN 219932135 U CN219932135 U CN 219932135U
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- outer side
- fixed
- sliding sleeve
- type well
- well cementation
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- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000007667 floating Methods 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 description 8
- 239000004568 cement Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model provides a switch type well cementation sliding sleeve which comprises a sleeve, wherein a fracturing mechanism and a centralizing mechanism are respectively arranged on the outer side of the sleeve, a floating shoe is arranged at one end of the sleeve, an air bag is arranged on the outer side of the sleeve, a first limiting ring and a second limiting ring are respectively arranged on the outer side of the air bag, the fracturing mechanism comprises a connecting ring, external threads, a first expansion block, a fixed seat, a fixed pipe, a spring, a connecting column and a second expansion block, the connecting ring is arranged on the outer side of the second limiting ring, and external threads are arranged on the outer side of the connecting ring. The switch type well cementation sliding sleeve solves the problems that the inner diameter of a sleeve is reduced by the existing mechanical structure arranged at the sliding sleeve, underground operation is not facilitated, the fracturing scale is limited due to the fact that the fracturing flow is reduced by necking, and the practicability is low.
Description
Technical Field
The utility model relates to the technical field of oilfield sliding sleeves, in particular to a switch type well cementation sliding sleeve.
Background
In the process of exploration and development of oil and gas fields, fracturing and acidizing operations are often carried out on the shot stratum so as to improve the oil and gas channel near a shaft and achieve the aim of improving the yield.
At present, the switchable well cementation sliding sleeve is mainly divided into three types of mechanical type, hydraulic type and circuit control type, the sliding sleeve is required to be lifted and lowered through an underground mechanical matching oil pipe to finish opening and closing of the sliding sleeve during mechanical construction, the inner diameter of a sleeve is reduced by the aid of the existing mechanical structure arranged at the sliding sleeve, underground operation is not facilitated, fracturing flow is reduced due to necking, fracturing scale is limited, and practicability is low.
Therefore, it is necessary to provide a new on-off type well cementing sliding sleeve to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the switch type well cementation sliding sleeve with the advantages of improving the fracturing scale and the practicability.
The utility model provides a switch type well cementation sliding sleeve, which comprises a pipe sleeve, wherein a fracturing mechanism and a centralizing mechanism are respectively arranged on the outer side of the pipe sleeve, a floating shoe is arranged at one end of the pipe sleeve, an air bag is arranged on the outer side of the pipe sleeve, a first limiting ring and a second limiting ring are respectively arranged on the outer side of the air bag, the fracturing mechanism comprises a connecting ring, external threads, a first expansion block, a fixed seat, a fixed pipe, a spring, a connecting column and a second expansion block, the connecting ring is arranged on the outer side of the second limiting ring, external threads are arranged on the outer side of the connecting ring, the inner wall of the connecting ring is respectively and fixedly connected with the first expansion block and the second expansion block, a fixed seat is fixedly connected to one side of the first expansion block, a fixed pipe is fixedly connected to one side of the fixed seat, a spring is fixedly connected to the inner wall of the fixed pipe, one end of the spring is fixedly connected with the connecting column, and one end of the connecting column is fixedly connected with one side of the second expansion block.
In order to achieve the effect of conveniently fixing the fixed block, the utility model provides a switch type well cementation sliding sleeve, which is preferable in that the righting mechanism comprises a fixed ring, a fixed block, a first rotating shaft, a fixed plate, a second rotating shaft and a righting hoop, wherein the inner wall of the fixed ring is in sliding connection with the outer side of a pipe sleeve, and the fixed block is fixedly connected with the outer side of the fixed ring.
In order to achieve the effect of facilitating adjustment of the fixing plate, the utility model provides the switch type well cementation sliding sleeve, preferably, the inner wall of the fixing block is rotatably connected with the first rotating shaft, and the outer side of the first rotating shaft is rotatably connected with the fixing plate.
In order to achieve the effect of conveniently adjusting the centralizing hoops, the utility model provides the switch type well cementation sliding sleeve, preferably, the inner wall of the fixed plate is rotatably connected with the second rotating shaft, and the outer side of the second rotating shaft is rotatably connected with the centralizing hoops.
In order to achieve the effect of conveniently improving the stability of the fixing seat, the utility model provides the switch type well cementation sliding sleeve, preferably, the inner wall of the fixing seat is in threaded connection with a fixing bolt, and the outer side of the fixing bolt is in threaded connection with the inner wall of the first expansion block.
In order to achieve the effect of conveniently fixing the mounting rings, the utility model provides the switch type well cementation sliding sleeve, preferably, the mounting rings are fixedly connected to the outer side of the sleeve, and the number of the mounting rings is two.
In order to achieve the effect of preventing cement backflow, the utility model provides a switch type well cementation sliding sleeve, preferably, a floating hoop is sleeved on the outer side of the pipe sleeve, and a check valve is arranged on the inner wall of the floating hoop.
Compared with the prior art, the utility model has the beneficial effects that:
this switch formula well cementation sliding sleeve through setting up fracturing mechanism, can conveniently improve the fracturing scale, has improved the practicality, through setting up righting mechanism, can conveniently right the pipe box in the well, makes things convenient for the pipe box to move down smoothly, has solved the mechanical structure that current sliding sleeve department arranged and has reduced the sleeve internal diameter, is unfavorable for the operation in the pit and has reduced the fracturing flow because the necking down has restricted the fracturing scale, problem that the practicality is low.
Drawings
FIG. 1 is a schematic view of a preferred embodiment of a switching cementing sleeve according to the present utility model;
FIG. 2 is a schematic view of a connecting mechanism according to the present utility model;
FIG. 3 is an enlarged schematic view of the structure shown at A in FIG. 2;
FIG. 4 is a schematic view showing the structure of the inside of the fixing tube according to the present utility model;
FIG. 5 is a schematic view of the structure of the righting mechanism of the present utility model;
fig. 6 is a schematic view of the structure of the float collar and check valve of the present utility model.
Reference numerals in the drawings: 1. a pipe sleeve; 2. a fracturing mechanism; 21. a connecting ring; 22. an external thread; 23. a first expansion block; 24. a fixing seat; 25. a fixed tube; 26. a spring; 27. a connecting column; 28. a second expansion block; 3. a righting mechanism; 31. a fixing ring; 32. a fixed block; 33. a first rotating shaft; 34. a fixing plate; 35. a second rotating shaft; 36. centralizing the hoop; 4. a float shoe; 5. an air bag; 6. a first stop collar; 7. a second limiting ring; 8. a fixing bolt; 9. a mounting ring; 10. a float collar; 11. a check valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the utility model. The connection relationships shown in the drawings are for convenience of clarity of description only and are not limiting on the manner of connection.
It is noted that when one component is considered to be "connected" to another component, it may be directly connected to the other component, or intervening components may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. It should also be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless otherwise specifically defined and limited; either mechanically or electrically, or by communication between two components. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6 in combination, fig. 1 is a schematic structural diagram of a preferred embodiment of a switching type well cementing sliding sleeve provided by the present utility model; FIG. 2 is a schematic view of a connecting mechanism according to the present utility model; FIG. 3 is an enlarged schematic view of the structure shown at A in FIG. 2; FIG. 4 is a schematic view showing the structure of the inside of the fixing tube according to the present utility model; FIG. 5 is a schematic view of the structure of the righting mechanism of the present utility model; fig. 6 is a schematic view of the structure of the float collar and check valve of the present utility model. The utility model provides a switch formula well cementation sliding sleeve, including pipe box 1, the outside of pipe box 1 is provided with fracturing unit 2 and righting unit 3 respectively, the one end of pipe box 1 is provided with shoes 4, the outside of pipe box 1 is provided with gasbag 5, the outside of gasbag 5 is provided with first spacing ring 6 and second spacing ring 7 respectively, fracturing unit 2 includes go-between 21, external screw thread 22, first expansion piece 23, fixing base 24, fixed pipe 25, spring 26, spliced pole 27 and second expansion piece 28, go-between 21 sets up in the outside of second spacing ring 7, the outside of go-between 21 is provided with external screw thread 22, the inner wall of go-between 21 is fixedly connected with first expansion piece 23 and second expansion piece 28 respectively, one side fixedly connected with fixing base 24 of first expansion piece 23, one side fixedly connected with fixed pipe 25 of fixing base 24, the inner wall fixedly connected with spring 26 of fixed pipe 25, one end fixedly connected with spliced pole 27 of spring 26, one end and one side fixedly connected with of second expansion piece 28 of spliced pole 27.
The inner wall of the fixed seat 24 is connected with a fixed bolt 8 in a threaded manner, and the outer side of the fixed bolt 8 is connected with the inner wall of the first expansion block 23 in a threaded manner.
The outer side of the pipe sleeve 1 is sleeved with a floating hoop 10, and the inner wall of the floating hoop 10 is provided with a check valve 11.
It should be noted that: through setting up the cooperation of go-between 21 and external screw thread 22 and use, can conveniently increase frictional force after the fracturing, through setting up the cooperation of first expansion block 23 and second expansion block 28 and use, can conveniently strut go-between 21 when being connected with the takeover, through setting up first expansion block 23, can conveniently fix fixing base 24, can conveniently fix fixed pipe 25 through setting up fixing pipe 25, can conveniently fix spring 26 through setting up spring 26, can conveniently fix spliced pole 27, through setting up spliced pole 27, can conveniently be connected with second expansion block 28, shoes 4 are the sleeve pipe guide shoes or the coupling that produces buoyancy, the guide shoes are used for guiding the casing string to descend into the well smoothly along the pit wall, prevent the sleeve pipe foot from inserting the wall of a well, reduce the resistance of descending the well, shoes 4 except have the effect of guide shoes in the process of descending the sleeve pipe, make drilling fluid keep flowing, through setting up the cooperation use of float collar 10 and check valve 11, can play the effect of preventing the backward flow, still have the plug pressure when well cementation, limit artifical bottom depth and the cement paste of bottom of the well bottom of a well plug and the high cement paste assurance casing quality of the well.
Referring to fig. 1 and 5, the centering mechanism 3 includes a fixing ring 31, a fixing block 32, a first rotating shaft 33, a fixing plate 34, a second rotating shaft 35, and a centering collar 36, the inner wall of the fixing ring 31 is slidably connected with the outer side of the pipe sleeve 1, and the fixing block 32 is fixedly connected with the outer side of the fixing ring 31.
The inner wall of the fixed block 32 is rotatably connected with a first rotating shaft 33, and the outer side of the first rotating shaft 33 is rotatably connected with a fixed plate 34.
The inner wall of the fixed plate 34 is rotatably connected with a second rotating shaft 35, and the outer side of the second rotating shaft 35 is rotatably connected with a centralizing hoop 36.
The outside fixedly connected with collar 9 of pipe box 1, the quantity of collar 9 sets up to two.
It should be noted that: through setting up solid fixed ring 31, can conveniently fix fixed block 32, through setting up solid fixed block 32, can make things convenient for first pivot 33 to rotate, through setting up first pivot 33, can make things convenient for fixed plate 34 to adjust, through setting up fixed plate 34, can make things convenient for second pivot 35 to rotate, through setting up second pivot 35, can make things convenient for righting hoop 36 to adjust, through setting up righting hoop 36, can conveniently right pipe box 1.
The working principle of the switch type well cementation sliding sleeve provided by the utility model is as follows:
when the hydraulic fracturing mechanism is used, the joint is inserted into the connecting ring 21, the resistance of the joint drives the first expansion block 23 and the second expansion block 28 to expand outwards, the first expansion block 23 and the second expansion block 28 expand outwards to drive the connecting ring 21 to expand, the connecting ring 21 expands outwards to drive the external threads 22 to expand outwards, the fracturing mechanism 2 body can be prevented from sliding, the first expansion block 23 and the second expansion block 28 can be conveniently connected through the cooperation of the fixing seat 24, the fixing tube 25, the spring 26 and the connecting column 27, the shoe 4 is a casing guide shoe or a coupling for generating buoyancy, the guide shoe is used for guiding a casing string to smoothly descend into a well along a well, the insertion of a casing foot into a well wall stratum is prevented, the well descending resistance is reduced, the floating shoe 4 has the function of the guide shoe, the well drilling fluid keeps flowing in the well descending process, the function of preventing the cement paste backflow through the cooperation of the floating collar 10 and the check valve 11, and the functions of the rubber plug bump during well cementation, the function of limiting the depth of an artificial bottom hole and the height of a cement plug under an oil layer are also achieved, and the sealing quality of the bottom of the casing is ensured.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (7)
1. The utility model provides a switch type well cementation sliding sleeve, its characterized in that, including pipe box (1), the outside of pipe box (1) is provided with fracturing unit (2) and righting mechanism (3) respectively, the one end of pipe box (1) is provided with shoes (4), the outside of pipe box (1) is provided with gasbag (5), the outside of gasbag (5) is provided with first spacing ring (6) and second spacing ring (7) respectively, fracturing unit (2) including go-between (21), external screw thread (22), first expansion block (23), fixing base (24), fixed pipe (25), spring (26), spliced pole (27) and second expansion block (28), go-between (21) are provided with in the outside of second spacing ring (7), the outside of go-between (21) is provided with external screw thread (22), the inner wall of go-between (21) is fixedly connected with first expansion block (23) and second expansion block (28) respectively, one side fixedly connected with fixing base (24) of first expansion block (23), one side fixedly connected with fixing base (25) of fixed pipe (25), one side fixedly connected with spring (26) of fixed pipe (26), one end of the connecting column (27) is fixedly connected with one side of the second expansion block (28).
2. The switch-type well cementation sliding sleeve according to claim 1, wherein the righting mechanism (3) comprises a fixed ring (31), a fixed block (32), a first rotating shaft (33), a fixed plate (34), a second rotating shaft (35) and a righting hoop (36), the inner wall of the fixed ring (31) is in sliding connection with the outer side of the sleeve (1), and the fixed block (32) is fixedly connected with the outer side of the fixed ring (31).
3. The switch type well cementation sliding sleeve according to claim 2, wherein a first rotating shaft (33) is rotatably connected to the inner wall of the fixed block (32), and a fixed plate (34) is rotatably connected to the outer side of the first rotating shaft (33).
4. The switching type well cementation sliding sleeve according to claim 2, wherein a second rotating shaft (35) is rotatably connected to the inner wall of the fixed plate (34), and a centralizing hoop (36) is rotatably connected to the outer side of the second rotating shaft (35).
5. The switch-type well cementation sliding sleeve according to claim 1, wherein the inner wall of the fixed seat (24) is in threaded connection with a fixed bolt (8), and the outer side of the fixed bolt (8) is in threaded connection with the inner wall of the first expansion block (23).
6. The switch type well cementation sliding sleeve according to claim 1, wherein the outer side of the pipe sleeve (1) is fixedly connected with mounting rings (9), and the number of the mounting rings (9) is two.
7. The switch-type well cementation sliding sleeve according to claim 1, wherein a floating hoop (10) is sleeved on the outer side of the pipe sleeve (1), and a check valve (11) is arranged on the inner wall of the floating hoop (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321127876.3U CN219932135U (en) | 2023-05-11 | 2023-05-11 | Switch type well cementation sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321127876.3U CN219932135U (en) | 2023-05-11 | 2023-05-11 | Switch type well cementation sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219932135U true CN219932135U (en) | 2023-10-31 |
Family
ID=88489607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321127876.3U Active CN219932135U (en) | 2023-05-11 | 2023-05-11 | Switch type well cementation sliding sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219932135U (en) |
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2023
- 2023-05-11 CN CN202321127876.3U patent/CN219932135U/en active Active
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| GR01 | Patent grant |