CN219953303U - Storage type circulating plugging tool - Google Patents
Storage type circulating plugging tool Download PDFInfo
- Publication number
- CN219953303U CN219953303U CN202321685138.0U CN202321685138U CN219953303U CN 219953303 U CN219953303 U CN 219953303U CN 202321685138 U CN202321685138 U CN 202321685138U CN 219953303 U CN219953303 U CN 219953303U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- injection hole
- plug
- outer sliding
- liquid injection
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Links
- 239000007788 liquid Substances 0.000 claims abstract description 73
- 238000002347 injection Methods 0.000 claims abstract description 53
- 239000007924 injection Substances 0.000 claims abstract description 53
- 239000004568 cement Substances 0.000 claims abstract description 31
- 230000007704 transition Effects 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 8
- 239000002002 slurry Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A storage type circulating plugging tool relates to the technical field of drilling plugging, and comprises an outer shell, wherein a first liquid injection hole, a cement injection hole and a second liquid injection hole are sequentially formed in the side wall of the outer shell from top to bottom, liquid storage bags are fixedly arranged on the outer side of the outer shell corresponding to the two liquid injection holes, the bag opening of each liquid storage bag is communicated with the corresponding liquid injection hole, and a one-way valve which only limits liquid entering the liquid storage bag is arranged at the communicating position; the utility model relates to a cement storage device, which comprises a shell body, wherein a side sliding seal is arranged in the shell body, the shell body is internally provided with an outer sliding sleeve, the outer sliding sleeve comprises two annular cylinder bodies, which are respectively called an outer sliding sleeve upper joint and an outer sliding sleeve lower joint, the outer sliding sleeve upper joint is in counterpoint with a first liquid injection hole to seal and block the outer sliding sleeve upper joint, the outer sliding sleeve lower joint is in counterpoint with a second liquid injection hole to seal and block the outer sliding sleeve lower joint, a transition port is communicated with a cement injection hole after the outer sliding sleeve upper joint slides downwards, and the transition port is blocked when the inner sliding sleeve is in counterpoint with the transition port.
Description
Technical Field
The utility model belongs to the technical field of well drilling plugging, and particularly relates to a warehouse style circulating plugging tool.
Background
Lost circulation is a common underground complex condition in drilling engineering, and if leakage points are not plugged, the complexity of the underground condition can be increased, so that drilling sticking and salvaging operations are caused, and even the well is scrapped.
Chinese patent CN212428712U discloses a slurry bag type plugging tool capable of circulating drilling fluid, which has a good plugging effect, but the plugging space is too large, wherein the ineffective plugging space occupies 70%, and the ineffective plugging space (cement at the shaft) must be drilled out later, which is very inconvenient.
In addition, other types of plugging tools in the prior art cannot control the direction of cement injection, cement paste flows underground wantonly, and the plugging effect is general.
Disclosure of Invention
In order to realize the controllability of the flowing range of injected cement, the utility model provides a storage type circulating plugging tool, and the flowing space of cement paste is formed by the two liquid storage bags after expansion sealing and the surrounding area of the outer cylinder body, so that the cement paste is prevented from flowing into an ineffective plugging area, and therefore, the utility model can control the flowing range of the injected cement paste, reduce the ineffective consumption and realize accurate plugging.
The technical scheme provided by the utility model is as follows: the storage type circulating plugging tool comprises an outer shell, wherein a first liquid injection hole, a cement injection hole and a second liquid injection hole are formed in the side wall of the outer shell from top to bottom in sequence, annular liquid storage bags are fixedly arranged on the outer side of the outer shell corresponding to the two liquid injection holes, the bag opening of each liquid storage bag is communicated with the corresponding liquid injection hole, and a one-way valve which only limits liquid entering the liquid storage bag is arranged at the communicating position; the outer sliding seal in the outer shell is provided with an outer sliding sleeve, the outer sliding sleeve is connected with the outer shell through a shear pin A, the outer sliding sleeve comprises two sections of annular cylinders, namely an outer sliding sleeve upper section and an outer sliding sleeve lower section, the two sections are connected through a rib plate, so that the two sections of sliding sleeves generate synchronous displacement, the outer sliding sleeve upper section is aligned with a first liquid injection hole and seals the first liquid injection hole, the outer sliding sleeve lower section is aligned with a second liquid injection hole and seals the second liquid injection hole, the position of the rib plate is aligned with a cement injection hole, the communication between the inner shell and the outer shell is not influenced at the cement injection hole, the side wall of the outer sliding sleeve upper section is provided with a transition port, and the transition port can be communicated with the cement injection hole after the outer sliding sleeve upper section slides downwards; the inner side of the outer sliding sleeve is provided with an inner sliding sleeve in a sliding sealing manner, the inner sliding sleeve is connected with the outer sliding sleeve through a shear pin B, and the transition port is plugged when the inner sliding sleeve is aligned with the transition port;
the warehouse style circulation leaking stoppage instrument also include to throw the core, throw the structure of core and include outer stopper, well stopper and interior stopper, wherein the outside of outer stopper matches sealedly with outer sliding sleeve upper end, well stopper sliding seal is in outer stopper, the outside of well stopper matches sealedly with the upper end of interior sliding sleeve, interior stopper sliding seal is in well stopper, outer stopper passes through shear pin C with well stopper and is connected, well stopper passes through shear pin D with interior stopper and is connected, the internal diameter of interior stopper is less than the internal diameter of interior sliding sleeve, shear force of shear pin C is stronger than shear pin D, shear force of shear pin D is stronger than shear pin A.
The further technical scheme is as follows: in the initial state, the liquid storage bag is attached to the outer wall of the outer shell, and is made of high-pressure bearing materials.
The further technical scheme is as follows: the lower end of the inner plug extends out of the middle plug, and the lower end of the inner plug is round.
The further technical scheme is as follows: the lower end of the outer shell is connected with a guide shoe.
As an alternative: the outer sliding sleeve comprises three sections, wherein the upper section and the lower section are annular cylinders, the middle section is a cylinder with a hollow side wall, and the upper section and the lower section are not connected.
The technical scheme provided by the utility model has the following advantages:
1. in the initial stage of well running, the cement hole is not plugged, and the inside and the outside of the outer shell can be communicated, so that the drilling fluid circulating device has the function of circulating drilling fluid.
2. The utility model can control the flowing range of cement slurry between two liquid storage bags by using the expansion sealing of two liquid storage bags above and below the leakage point, thus forming a cement warehouse, so that the cement slurry has small usage amount, large effective leakage blocking amount and accurate leakage blocking.
Drawings
Fig. 1 is a sectional view of an initial state of the present utility model.
Fig. 2 is a partial structural diagram of the beginning of core insertion.
Fig. 3 is a state diagram after the core is thrown in and pressed.
Fig. 4 is a state diagram of the inner slide sleeve after being pushed down after pitching.
In the figure: 1. an outer housing; 2. a liquid storage bag; 3. a first liquid injection hole; 4. injecting cement holes; 5. a second liquid injection hole; 6. the lower section of the outer sliding sleeve; 7. guiding shoes; 8. an upper section of the outer sliding sleeve; 9. an inner sliding sleeve; 10. a transition port; 11. rib plates; 12. an outer plug; 13. a middle plug; 14. an inner plug; 15. a shear pin C; 16. a shear pin D; 17. a shear pin B; 18. shear pin a.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. 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 be within the scope of the utility model.
As shown in fig. 1-4, the embodiment comprises an outer shell 1, the upper end of the outer shell 1 is connected with a drilling string, and the lower end of the outer shell 1 can be connected with a guide shoe 7.
The lateral wall of the outer shell body 1 is provided with a first liquid injection hole 3, a cement injection hole 4 and a second liquid injection hole 5 from top to bottom in sequence, wherein the outer side of the outer shell body 1 corresponding to the two liquid injection holes is fixedly provided with an annular liquid storage bag 2, and in an initial state, the liquid storage bag 2 is attached to the outer wall of the outer shell body 1, and the liquid storage bag 2 is made of a high-pressure bearing material. The mouth of each liquid storage bag 2 is communicated with the corresponding liquid injection hole, and a one-way valve which only limits liquid inlet into the liquid storage bag 2 is arranged at the communication position; the two liquid storage bags 2 are sealed up and down at the leakage point, the flowing range of the cement paste is controlled between the two liquid storage bags 2, and a cement storage is formed.
The inside sliding seal of the outer shell 1 is provided with an outer sliding sleeve, the outer sliding sleeve is connected with the outer shell 1 through a shear pin A18, and the outer sliding sleeve is fixed relative to the outer shell 1 at the initial time under the stabilization of the shear pin A18. The outer sliding sleeve comprises two sections of annular cylinders, which are respectively called an outer sliding sleeve upper section 8 and an outer sliding sleeve lower section 6, and the two sections are connected through a rib plate 11, so that the two sections of sliding sleeve generate synchronous displacement; or as the alternative scheme, the outer sliding sleeve includes three sections, and two sections are annular barrel about wherein, and the middle section is the barrel of lateral wall fretwork, and the three is not connected, also can accomplish outer sliding sleeve upper section 8 and slide down this moment, and outer sliding sleeve lower section 6 is pushed down in step, and the fretwork in the middle does not influence the penetrating of cementing hole 4.
The upper joint 8 of the outer sliding sleeve is aligned with the first liquid injection hole 3 and seals the first liquid injection hole, the lower joint 6 of the outer sliding sleeve is aligned with the second liquid injection hole 5 and seals the second liquid injection hole, the position of the rib plate 11 is aligned with the cement injection hole 4, and the inner and outer communication of the outer shell 1 is formed at the cement injection hole 4.
The side wall of the upper outer sliding sleeve joint 8 is provided with a transition port 10, and the transition port 10 can be communicated with the cement injection hole 4 after the upper outer sliding sleeve joint 8 slides downwards. The inner side of the outer sliding sleeve is provided with an inner sliding sleeve 9 in a sliding sealing manner, the inner sliding sleeve 9 is connected with the outer sliding sleeve through a shear pin B17, and the transition port 10 is blocked when the inner sliding sleeve 9 is aligned with the transition port 10.
As shown in fig. 2, 3 and 4, the warehouse-type circulation plugging tool further comprises a core throwing structure, the core throwing structure comprises an outer plug 12, a middle plug 13 and an inner plug 14, wherein the outer side of the outer plug 12 is matched and sealed with the upper end of the outer sliding sleeve, after the core throwing is performed, the outer plug 12 reaches the upper end of the outer sliding sleeve, after the core throwing is performed, the shear force of a shear pin A18 is weaker than that of a shear pin C15 and a shear pin D16, so that the shear pin A is firstly sheared, the outer sliding sleeve is pushed to descend to the lower end of the outer sliding sleeve to be abutted against the guide shoe 7, the upper section 8 of the outer sliding sleeve leaves the first liquid injection hole 3, and the lower section 6 of the outer sliding sleeve leaves the second liquid injection hole 5; the middle plug 13 is sealed in the outer plug 12 in a sliding manner, the outer side of the middle plug 13 is sealed with the upper end of the inner sliding sleeve 9 in a matching manner, the inner plug 14 is sealed in the middle plug 13 in a sliding manner, the outer plug 12 is connected with the middle plug 13 through a shear pin C15, the middle plug 13 is connected with the inner plug 14 through a shear pin D16, and the inner diameter of the inner plug 14 is smaller than the inner diameter of the inner sliding sleeve 9; the shear force of the shear pin C15 is stronger than that of the shear pin D16, so that the shear pin D16 is sheared when the pressing is continued, the inner plug 14 slides downwards to a state shown in fig. 3, and at the moment, the upper liquid injection hole and the lower liquid injection hole are in a through state, so that liquid can be injected to expand and seal the liquid storage bag 2. The lower end of the inner plug 14 extends out of the middle plug 13, and the lower end of the inner plug 14 is round-headed, so as to play a role in guiding.
The plugging process of the utility model is as follows:
1. expanding and sealing a liquid storage bag 2: after the core is thrown into the pipe column and reaches the upper end of the outer sliding sleeve, hydraulic pressure is added to the pipe column, firstly, the shear pin A18 is sheared off, the outer sliding sleeve and the inner sliding sleeve 9 on the inner side of the outer sliding sleeve are pushed to synchronously descend until the outer sliding sleeve abuts against the guide shoe 7, the pressurization is continued, the shear pin D16 is sheared off, the inner plug 14 slides down until the whole body is in the state of figure 3, at this time, the upper liquid injection hole and the lower liquid injection hole are in the state of being communicated with the central pipe, the pressurization is continued, and liquid is pressed into the liquid storage bag 2 through the one-way valve until the liquid storage bag 2 is sealed between the pipe column and the well wall in an expanding mode.
2. Grouting cement paste: after the liquid storage bag 2 is sealed in an expanding mode, throwing balls into the pipe column, enabling the balls to fall above the middle plug 13, pushing the middle plug 13 to move downwards, enabling the middle plug 13 to move downwards, pushing the inner sliding sleeve 9 to move downwards until the state of fig. 4 is achieved, enabling a cementing hole to be opened, and beginning to inject cement slurry through the cementing hole 4.
Claims (5)
1. A storage type circulating plugging tool, which is characterized in that: the liquid storage device comprises an outer shell (1), wherein a first liquid injection hole (3), a cement injection hole (4) and a second liquid injection hole (5) are formed in the side wall of the outer shell (1) from top to bottom in sequence, annular liquid storage bags (2) are fixedly arranged on the outer side of the outer shell (1) corresponding to the two liquid injection holes, the bag opening of each liquid storage bag (2) is communicated with the corresponding liquid injection hole, and a one-way valve which only limits liquid entering the liquid storage bag (2) is arranged at the communicating position; the inner side of the outer shell (1) is provided with an outer sliding sleeve in a sliding sealing manner, the outer sliding sleeve is connected with the outer shell (1) through a shear pin A (18), the outer sliding sleeve comprises two annular sections of cylinders, namely an outer sliding sleeve upper joint (8) and an outer sliding sleeve lower joint (6), the two sections are connected through a rib plate (11), the outer sliding sleeve upper joint (8) is aligned with a first liquid injection hole (3) to seal and block the first liquid injection hole, the outer sliding sleeve lower joint (6) is aligned with a second liquid injection hole (5) to seal and block the second liquid injection hole, the position of the rib plate (11) is aligned with a cement injection hole (4), the outer shell (1) is communicated with the outside at the cement injection hole (4), the side wall of the outer sliding sleeve upper joint (8) is provided with a transition port (10), and the transition port (10) can be communicated with the cement injection hole (4) after the outer sliding sleeve upper joint (8) slides downwards; the inner side of the outer sliding sleeve is provided with an inner sliding sleeve (9) in a sliding sealing manner, the inner sliding sleeve (9) is connected with the outer sliding sleeve through a shear pin B (17), and the transition port (10) is blocked when the inner sliding sleeve (9) is aligned with the transition port (10);
the warehouse style circulation plugging tool also comprises a core, the core comprises an outer plug (12), a middle plug (13) and an inner plug (14), wherein the outer side of the outer plug (12) is sealed with the upper end of the outer sliding sleeve in a matched mode, the middle plug (13) is sealed in the outer plug (12) in a sliding mode, the outer side of the middle plug (13) is sealed with the upper end of the inner sliding sleeve (9) in a matched mode, the inner plug (14) is sealed in the middle plug (13) in a sliding mode, the outer plug (12) is connected with the middle plug (13) through a shear pin C (15), the middle plug (13) is connected with the inner plug (14) through a shear pin D (16), and the inner diameter of the inner plug (14) is smaller than that of the inner sliding sleeve (9); shear force of shear pin C (15) is stronger than shear pin D (16), and shear force of shear pin D (16) is stronger than shear pin a (18).
2. The warehouse style circulation plugging tool of claim 1, wherein: in an initial state, the liquid storage bag (2) is attached to the outer wall of the outer shell (1), and the liquid storage bag (2) is made of high-pressure bearing materials.
3. The warehouse style circulation plugging tool of claim 1, wherein: the lower end of the inner plug (14) extends out of the middle plug (13), and the lower end of the inner plug (14) is round.
4. The warehouse style circulation plugging tool of claim 1, wherein: the lower end of the outer shell (1) is connected with a guide shoe (7).
5. The warehouse style circulation plugging tool of claim 1, wherein: the outer sliding sleeve comprises three sections, wherein the upper section and the lower section are annular cylinders, the middle section is a cylinder with a hollow side wall, and the upper section and the lower section are not connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321685138.0U CN219953303U (en) | 2023-06-30 | 2023-06-30 | Storage type circulating plugging tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321685138.0U CN219953303U (en) | 2023-06-30 | 2023-06-30 | Storage type circulating plugging tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219953303U true CN219953303U (en) | 2023-11-03 |
Family
ID=88552197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321685138.0U Active CN219953303U (en) | 2023-06-30 | 2023-06-30 | Storage type circulating plugging tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219953303U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117468888A (en) * | 2023-12-27 | 2024-01-30 | 中国石油集团川庆钻探工程有限公司 | Underground airtight plugging tool and plugging method |
-
2023
- 2023-06-30 CN CN202321685138.0U patent/CN219953303U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117468888A (en) * | 2023-12-27 | 2024-01-30 | 中国石油集团川庆钻探工程有限公司 | Underground airtight plugging tool and plugging method |
| CN117468888B (en) * | 2023-12-27 | 2024-03-19 | 中国石油集团川庆钻探工程有限公司 | Underground airtight plugging tool and plugging method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |