CN221236702U - Cement paste plugging instrument - Google Patents
Cement paste plugging instrument Download PDFInfo
- Publication number
- CN221236702U CN221236702U CN202323463765.2U CN202323463765U CN221236702U CN 221236702 U CN221236702 U CN 221236702U CN 202323463765 U CN202323463765 U CN 202323463765U CN 221236702 U CN221236702 U CN 221236702U
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- China
- Prior art keywords
- cement
- plugging
- injection pipe
- outflow pipe
- pipe
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- 239000004568 cement Substances 0.000 title claims abstract description 103
- 230000007246 mechanism Effects 0.000 claims abstract description 59
- 238000002347 injection Methods 0.000 claims abstract description 37
- 239000007924 injection Substances 0.000 claims abstract description 37
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 12
- 239000002103 nanocoating Substances 0.000 claims description 4
- 239000011440 grout Substances 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
The utility model belongs to the field of well drilling plugging, in particular relates to a cement slurry plugging instrument, and aims to solve the problems that cement is difficult to stop and a fracture hole to be plugged is difficult to plug or the plugging effect is poor due to the backflow of cement caused by the action of pressure in a well. The utility model comprises the following steps: the cement injection pipe is used for injecting cement slurry and can extend into the well, the outer surface of the cement injection pipe is fixedly sealed and communicated with a cement outflow pipe, and plugging mechanisms are respectively arranged on two sides of the cement outflow pipe; one end of each plugging mechanism, which is close to the cement outflow pipe, is fixed with the cement injection pipe, and one end of each plugging mechanism, which is far away from the cement outflow pipe, is movably connected with the cement injection pipe; the plugging mechanisms comprise air bags, and the air bags are extruded through movement of one end, far away from the cement outflow pipe, of each plugging mechanism, so that plugging is realized. According to the utility model, the independent space is formed at the position of the hole, cement is injected into the independent space to repair the hole, so that the cement can be ensured to reside at the hole.
Description
Technical Field
The utility model belongs to the field of well drilling plugging, and particularly relates to a cement slurry plugging instrument.
Background
The leakage in the drilling of oil and gas wells seriously affects construction safety, engineering quality, oil and gas yield and exploration discovery. The method solves the problem of severe leakage of the oil and gas well fracture hole, and is a complex engineering technical problem, the repairing means of the oil and gas well fracture hole is to plug the fracture hole so as to prevent leakage, and plugging materials are various, wherein the fracture hole can be plugged by cement to obtain reliable strength, but in the repairing process of the fracture hole by cement, the cement is possibly caused to flow back due to the action of the pressure in the well, so that the cement is not easy to stop at the fracture hole to be plugged, and further the plugging failure or poor effect can be caused.
Based on the above, the utility model provides a cement paste plugging instrument.
Disclosure of utility model
In order to solve the problems in the prior art, namely that cement is difficult to stop at the position of a fracture hole to be plugged due to the fact that cement flows back due to the action of pressure in a well in the process of repairing the fracture hole, and further the problem that plugging fails or the effect is poor is solved, the utility model provides a cement slurry plugging instrument, which comprises a cement injection pipe, a cement outflow pipe and a plugging mechanism;
The cement injection pipe is used for injecting cement slurry and can extend into a well, the cement outflow pipe is fixedly sealed on the outer surface of the cement injection pipe and communicated with the cement injection pipe, and the plugging mechanisms are respectively arranged on two sides of the cement outflow pipe along the length direction of the cement injection pipe;
One end, close to the cement outflow pipe, of each blocking mechanism is fixed with the cement injection pipe, and one end, far away from the cement outflow pipe, of each blocking mechanism is movably connected with the cement injection pipe;
The blocking mechanism comprises air bags, and the air bags are extruded through movement of one end, far away from the cement outflow pipe, of each blocking mechanism, so that blocking is achieved.
In some preferred embodiments, the occlusion mechanism further comprises a drive mechanism, a first connection plate, and a second connection plate;
One end face of the first connecting plate is fixed with the movable end of the driving mechanism, the first connecting plate can reciprocate along the cement injection pipe, the fixed end of the driving mechanism is fixed with the outer surface of the cement injection pipe, the other end face of the first connecting plate is fixed with one end of the air bag, the other end of the air bag is fixed with the second connecting plate, and the second connecting plate is fixed with the cement injection pipe.
In some preferred embodiments, the plugging mechanisms are respectively installed on two sides of the cement outflow pipe along the length direction of the cement injection pipe, and the plugging mechanisms have the following structures: the first connecting plate, the driving mechanism, the second connecting plate and the air bag are symmetrically arranged along the central line of the cement outflow pipe.
In some preferred embodiments, a protective cover is mounted on the outer circumferential surface of the balloon, the protective cover being used to prevent damage to the balloon.
In some preferred embodiments, a nanocoating is provided on the outer surface of the protective sheath, the nanocoating being used to assist in repositioning the occlusion mechanism.
In some preferred embodiments, the driving mechanism includes any one of a cylinder, a hydraulic cylinder, and a linear motor.
In some preferred embodiments, the drive mechanism is uniformly disposed along a surface of the first connection plate.
The utility model has the beneficial effects that:
(1) According to the cement slurry plugging instrument, the independent space is formed at the position of the hole, cement is injected into the independent space to repair the hole, so that the cement can be ensured to reside at the position of the hole, and the effective repair of the hole is realized.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of a cement slurry plugging instrument of the present utility model in a state of being plugged into a well;
FIG. 2 is a schematic diagram of the operation state of a plugging mechanism of the cement paste plugging instrument;
fig. 3 is a schematic view of a protective sleeve mounted on a plugging mechanism of a cement paste plugging instrument.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the present utility model are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 3, the present utility model provides a cement paste plugging instrument, which comprises a cement injection pipe 100, a cement outflow pipe 200 and a plugging mechanism 300;
the cement injection pipe 100 is used for injecting cement slurry and can extend into a well, the cement outflow pipe 200 is fixedly sealed on the outer surface of the cement injection pipe 100 and communicated with the cement injection pipe 100, and the plugging mechanisms 300 are respectively arranged on two sides of the cement outflow pipe 200 along the length direction of the cement injection pipe 100;
One end of each plugging mechanism 300 close to the cement outflow pipe 200 is fixed with the cement injection pipe 100, and one end of each plugging mechanism 300 far away from the cement outflow pipe 200 is movably connected with the cement injection pipe 100;
The plugging mechanisms 300 comprise air bags 400, and the air bags 400 are extruded by the movement of one end of each plugging mechanism 300 away from the cement outflow pipe 200, so as to realize plugging.
Referring to fig. 1 and 2, as a further explanation of the present utility model, the plugging mechanism 300 further includes a driving mechanism 301, a first connection plate 302, and a second connection plate 303;
One end face of the first connecting plate 302 is fixed to the moving end of the driving mechanism 301, the first connecting plate 302 can reciprocate along the cement injection pipe 100, the fixed end of the driving mechanism 301 is fixed to the outer surface of the cement injection pipe 100, the other end face of the first connecting plate 302 is fixed to one end of the air bag 400, the other end of the air bag 400 is fixed to the second connecting plate 303, and the second connecting plate 303 is fixed to the cement injection pipe 100.
Referring to fig. 1, as a further explanation of the present utility model, the plugging mechanism 300 is respectively installed on both sides of the cement outflow pipe 200 along the length direction of the cement inflow pipe 100, and has the structure as follows: the first connection plate 302, the driving mechanism 301, the second connection plate 303, and the airbag 400 are symmetrically disposed along a center line of the cement outflow pipe 200.
Referring to fig. 3, as a further explanation of the present utility model, a protective cover 304 is installed on an outer circumferential surface of the airbag 400, the protective cover 304 being used to prevent the airbag 400 from being damaged.
Referring to fig. 3, as a further explanation of the present utility model, the outer surface of the protective sheath 304 is provided with a nano-coating for assisting in the non-easy repositioning of the occlusion mechanism 300.
Wherein, the protective sheath 304 is flexible material preparation, can take place the deformation, and the coating nanometer coating on this protective sheath 304 outer wall guarantees that cement solidification back can not adhere to the shutoff mechanism 300 and lead to shutoff mechanism 300 difficult reset.
Referring to fig. 1, as a further explanation of the present utility model, the driving mechanism 301 includes any one of a cylinder, a hydraulic cylinder, and a linear motor.
Referring to fig. 1, as a further explanation of the present utility model, the driving mechanism 301 is uniformly provided with at least one group along the surface of the first connecting plate 302.
When repairing the hole, the cement injection pipe 100 is inserted into the hole to the position of the hole, the position of the cement outflow pipe 200 on the cement injection pipe 100 is kept unchanged from the position of the hole, and the plugging mechanism 300 is started;
specifically, when the driving mechanism 301 is started, the first connecting plate 302 applies pressure to the air bag 400, so that the air bag 400 is flattened and deformed, the deformed cylindrical air bag 400 can be attached to the well wall, when the upper blocking mechanism and the lower blocking mechanism are operated, an independent space can be formed, the cement outflow pipe 200 is located in the independent space, and at the moment, cement can be discharged into the independent space, so that accurate and effective blocking of a hole can be completed.
The terms "first," "second," and the like, are used for distinguishing between similar objects and not for describing a particular sequential or chronological order.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus/apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus/apparatus.
Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will be within the scope of the present utility model.
Claims (7)
1. The cement paste plugging instrument is characterized by comprising a cement injection pipe (100), a cement outflow pipe (200) and a plugging mechanism (300);
The cement injection pipe (100) is used for injecting cement slurry and can extend into a well, the cement outflow pipe (200) is fixedly sealed and communicated on the outer surface of the cement injection pipe (100), and the plugging mechanisms (300) are respectively arranged on two sides of the cement outflow pipe (200) along the length direction of the cement injection pipe (100);
One end, close to the cement outflow pipe (200), of each plugging mechanism (300) is fixed with the cement injection pipe (100), and one end, far away from the cement outflow pipe (200), of each plugging mechanism (300) is movably connected with the cement injection pipe (100);
the plugging mechanisms (300) comprise air bags (400), and the air bags (400) are extruded through movement of one end, away from the cement outflow pipe (200), of each plugging mechanism (300) so as to realize plugging.
2. A cement paste leak stopper according to claim 1, wherein the stopper mechanism (300) further comprises a drive mechanism (301), a first connection plate (302) and a second connection plate (303);
One end face of the first connecting plate (302) is fixed with the moving end of the driving mechanism (301), the first connecting plate (302) can reciprocate along the cement injection pipe (100), the fixed end of the driving mechanism (301) is fixed with the outer surface of the cement injection pipe (100), the other end face of the first connecting plate (302) is fixed with one end of the air bag (400), the other end of the air bag (400) is fixed with the second connecting plate (303), and the second connecting plate (303) is fixed with the cement injection pipe (100).
3. The plugging device according to claim 2, wherein the plugging mechanism (300) is respectively installed on both sides of the cement outflow pipe (200) along the length direction of the cement injection pipe (100), and has a structure as follows: the first connecting plate (302), the driving mechanism (301), the second connecting plate (303) and the air bag (400) are symmetrically arranged along the central line of the cement outflow pipe (200).
4. A cement paste leak stopper according to claim 3, wherein a protective sleeve (304) is mounted on the outer circumference of the air bag (400), the protective sleeve (304) being adapted to prevent damage to the air bag (400).
5. A cement paste leak stopper as claimed in claim 4, wherein the outer surface of the protective sleeve (304) is provided with a nano-coating for assisting in the resetting of the stopper mechanism (300).
6. A grout plugging instrument according to claim 5, wherein the driving mechanism (301) comprises any one of a cylinder, a hydraulic cylinder and a linear motor.
7. A cement paste leak stopper according to claim 6, wherein the drive mechanism (301) is arranged uniformly in at least one group along the surface of the first connection plate (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323463765.2U CN221236702U (en) | 2023-12-19 | 2023-12-19 | Cement paste plugging instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323463765.2U CN221236702U (en) | 2023-12-19 | 2023-12-19 | Cement paste plugging instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221236702U true CN221236702U (en) | 2024-06-28 |
Family
ID=91593850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323463765.2U Active CN221236702U (en) | 2023-12-19 | 2023-12-19 | Cement paste plugging instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221236702U (en) |
-
2023
- 2023-12-19 CN CN202323463765.2U patent/CN221236702U/en active Active
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