CN116856881B - Bridge plug with embedded plugging structure and bridge plug setting method thereof - Google Patents
Bridge plug with embedded plugging structure and bridge plug setting method thereof Download PDFInfo
- Publication number
- CN116856881B CN116856881B CN202311126753.2A CN202311126753A CN116856881B CN 116856881 B CN116856881 B CN 116856881B CN 202311126753 A CN202311126753 A CN 202311126753A CN 116856881 B CN116856881 B CN 116856881B
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- plugging structure
- embedded
- bridge plug
- alloy sheet
- embedded plugging
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000956 alloy Substances 0.000 claims abstract description 93
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 93
- 238000003825 pressing Methods 0.000 claims abstract description 64
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 239000002245 particle Substances 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of bridge plug setting, and discloses an embedded plugging structure bridge plug and a bridge plug setting method thereof, wherein the embedded plugging structure bridge plug comprises a central pipe shaft, and an upper pressing ring, a first embedded plugging structure, an integrated slip pressing table, a second embedded plugging structure, a lower pressing ring and a positioning taper sleeve are sequentially arranged on the central pipe shaft from top to bottom; the first embedded plugging structure comprises a plurality of alloy sheets which are arranged in a three-dimensional staggered mode, and an upper slip is arranged on the outer wall of the alloy sheet on the outermost layer of the first embedded plugging structure; the embedded plugging structure of second includes a plurality of three-dimensional dislocation distribution's alloy piece, is provided with down slips on the outer wall of the embedded plugging structure's of second outermost alloy piece. The invention adopts the bridge plug with the embedded plugging structure and the bridge plug setting method thereof, and can solve the problem that residual particles remain after the plugging is unstable and the bridge plug can be dissolved in the prior art.
Description
Technical Field
The invention relates to the technical field of bridge plug setting, in particular to an embedded plugging structure bridge plug and a bridge plug setting method thereof.
Background
In the exploration and exploitation process of an oil field, a temporary plugging process is needed to plug a current production layer so as to facilitate the implementation of processes on other production layers, and after the processes are completed, temporary plugging is removed, a flow channel between the production layer and a shaft is established, so that the oil and gas extraction and gas production of an oil and gas well are realized. Although the plugging technology of the bridge plug is widely applied in the development and transformation process, at least the following technical problems exist in the bridge plug in the prior art:
firstly, the bridge plug has unstable plugging effect in the process after the completion of setting, and the current production layer cannot be plugged, so that the bridge plug cannot play a role in plugging, and the production cannot be normally carried out, so that the bridge plug with unstable plugging effect is required to be recovered, and the construction period and the labor are consumed.
Secondly, after the bridge plug is set, after the production process is finished, the bridge plug is often waited for to be dissolved, and residual solid particles still exist after the soluble bridge plug is dissolved, and then manual cleaning is needed, so that the convenience of construction is greatly influenced.
Disclosure of Invention
The invention aims to provide an embedded plugging structure bridge plug and a bridge plug setting method thereof, which solve the problems of the background technology.
The invention provides an embedded plugging structure bridge plug, which comprises a central pipe shaft, wherein an upper pressing ring, a first embedded plugging structure, an integrated slip pressing table, a second embedded plugging structure, a lower pressing ring and a positioning taper sleeve are sequentially arranged on the central pipe shaft from top to bottom;
the first embedded plugging structure comprises a plurality of alloy sheets which are arranged in a three-dimensional staggered mode, and an upper slip is arranged on the outer wall of the alloy sheet on the outermost layer of the first embedded plugging structure;
the embedded plugging structure of second includes a plurality of three-dimensional dislocation distribution's alloy piece, is provided with down slips on the outer wall of the embedded plugging structure's of second outermost alloy piece.
Preferably, the upper end of the alloy sheet of the first embedded plugging structure is connected with the lower end of the upper pressing ring.
Preferably, the lower end of the alloy sheet of the second embedded plugging structure is connected with the upper end of the lower pressing ring.
Preferably, the integrated slip pressing platform comprises a first pressing platform and a second pressing platform, and the first pressing platform and the second pressing platform are arranged in an up-down symmetrical mode.
Preferably, the first embedded plugging structure and the second embedded plugging structure are arranged in a vertically symmetrical manner, and the alloy sheet of the first embedded plugging structure and the alloy sheet of the second embedded plugging structure are identical in structure.
Preferably, the alloy sheets within the outermost alloy sheet are each provided with a rubber layer.
Preferably, the first pressing table and the second pressing table are both cones.
An embedded plugging structure bridge plug setting method comprises the following steps:
setting is carried out when the bridge plug reaches a designated position, the upper pressing ring is pressed and transmitted to the first embedded plugging structure under the action of axial force, so that the innermost alloy sheet at the lower end of the first embedded plugging structure is contacted with the upper end of the first pressing table, the innermost alloy sheet is extruded at the upper end of the first pressing table, the innermost alloy sheet transmits the force to the alloy sheet at the outermost layer through the alloy sheets arranged in a staggered manner layer by layer, the alloy sheet at the outermost layer is extruded outwards to form an upper slip, and the first embedded plugging structure is stressed to move outwards;
the lower pressing ring is pressed and transmitted to the second embedded plugging structure under the action of axial force, so that the innermost alloy sheet at the upper end of the second embedded plugging structure is contacted with the lower end of the second pressing table, the innermost alloy sheet is extruded at the lower end of the second pressing table, the innermost alloy sheet transmits force to the alloy sheet at the outermost layer through the alloy sheets arranged in a staggered manner layer by layer, the alloy sheet at the outermost layer is extruded outwards to form a lower slip, and the second embedded plugging structure is stressed to move outwards;
until the integral slip pressing platform wraps the first embedded plugging structure and the second embedded plugging structure, the bridge plug is sealed on the outer wall, and the bridge plug is sealed.
Therefore, the embedded plugging structure bridge plug and the bridge plug setting method thereof have the following beneficial effects:
(1) According to the bridge plug, the blocking effect can be enhanced through the embedded blocking structure, the alloy sheets which are arranged in a three-dimensional staggered mode are extruded layer by layer to transfer force to the slips, so that the embedded blocking structure is stressed to move outwards, the bridge plug is completed to be seated, and the blocking stability is higher.
(2) Compared with the traditional sealing rubber cylinder bridge plug, the rubber layer used on the alloy sheet is far less than the rubber of the sealing rubber cylinder, so that the bridge plug has few solid particles remained after dissolution, manual cleaning is not needed, and the construction convenience is improved.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of an embedded plugging bridge plug according to the present invention;
FIG. 2 is a schematic illustration of an embodiment of an in-line plug according to the present invention;
FIG. 3 is a top view of a first in-line occlusion structure of an in-line occlusion structure bridge plug embodiment of the present invention;
FIG. 4 is a side view of a first in-line occlusion structure of an in-line occlusion structure bridge embodiment of the present invention;
FIG. 5 is a side view of an integral slip land of an embodiment of an in-line occlusion structure bridge plug of the present invention.
Reference numerals
1. A center tube shaft; 2. a pressing ring is arranged; 3. the first embedded plugging structure; 4. the second embedded plugging structure; 5. a lower pressing ring; 6. positioning the taper sleeve; 7. alloy sheets; 8. an upper slip; 9. a lower slip; 10. an integral slip pressing table; 11. a first platen; 12. and a second pressing table.
Detailed Description
The technical scheme of the invention is further described below through the attached drawings and the embodiments.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Examples
As shown in fig. 1, the bridge plug with the embedded plugging structure comprises a central pipe shaft 1, wherein an upper pressing ring 2, a first embedded plugging structure 3, an integrated slip pressing table 10, a second embedded plugging structure 4, a lower pressing ring 5 and a positioning taper sleeve 6 are sequentially arranged on the central pipe shaft 1 from top to bottom. The upper pressing ring 2, the first embedded plugging structure 3, the integrated slip pressing table 10, the second embedded plugging structure 4, the lower pressing ring 5 and the positioning taper sleeve 6 are all in sliding connection with the central pipe shaft 1 through sliding blocks and sliding grooves in the prior art. The lower end of the upper pressing ring 2 is fixedly connected with the upper end of the first embedded plugging structure 3, and the upper end of the lower pressing ring 5 is fixedly connected with the lower end of the second embedded plugging structure 4.
FIG. 3 is a top view of a first in-line occlusion structure of an in-line occlusion structure bridge plug embodiment of the present invention; fig. 4 is a side view of a first in-line occlusion structure of an in-line occlusion structure bridge embodiment of the present invention. The first embedded plugging structure 3 comprises a plurality of alloy sheets 7 which are arranged in a three-dimensional staggered mode, and an upper slip 8 is arranged on the outer wall of the alloy sheet 7 on the outermost layer of the first embedded plugging structure 3. The upper end of the alloy sheet 7 of the first embedded plugging structure 3 is connected with the lower end of the upper pressing ring 2. The second embedded plugging structure 4 comprises a plurality of alloy sheets 7 which are arranged in a three-dimensional staggered mode, and lower slips 9 are arranged on the outer wall of the alloy sheet 7 on the outermost layer of the second embedded plugging structure 4. The lower end of the alloy sheet 7 of the second embedded plugging structure 4 is connected with the upper end of the lower pressing ring 5. The first embedded plugging structure 3 and the second embedded plugging structure 4 are arranged symmetrically up and down, and the alloy sheet 7 of the first embedded plugging structure 3 and the alloy sheet 7 of the second embedded plugging structure 4 are identical in structure. Between the innermost alloy sheet 7 and the outermost alloy sheet 7 of the first embedded plugging structure 3 and the second embedded plugging structure 4, a plurality of layers of alloy sheets 7 are arranged in a staggered manner from inside to outside. The two sides of the alloy sheet 7 are provided with inclined structures inclined downwards from top to bottom.
FIG. 5 is a side view of an integral slip land of an embodiment of an in-line occlusion structure bridge plug of the present invention. The inner wall of the integral slip pressing table 10 is connected to the central tube shaft 1, the inner diameters of the upper end and the lower end of the integral slip pressing table are tightly attached to the central tube shaft 1, and the circle with the maximum outer diameter is equal to the maximum outer diameter of the integral bridge plug. A gap is reserved between the integral slip pressure table 10 and the minimum inner diameter of the lower end of the first embedded plugging structure 3 and the minimum inner diameter of the upper end of the second embedded plugging structure 4. The integral slip pressure table 10 can provide transverse force to the alloy sheet 7 of the embedded plugging structure when the bridge plug is conveniently seated, and the alloy sheet 7 is promoted to expand outwards to form the plugging structure of the bridge plug. The integral slip press 10 comprises a first press table 11 and a second press table 12, wherein the first press table 11 and the second press table 12 are arranged symmetrically up and down. The first pressing table 11 and the second pressing table 12 are both cones.
The alloy sheet 7 within the outermost alloy sheet 7 of the first embedded plugging structure 3 is provided with a rubber layer, and the alloy sheet 7 within the outermost alloy sheet 7 of the second embedded plugging structure 4 is provided with a rubber layer. The rubber layer can avoid friction loss of the alloy sheet 7 caused by movement of the embedded structure, and meanwhile, the plugging effect of the bridge plug after setting is enhanced. The alloy sheet 7 is made of a material with high shaping, so that the alloy sheet 7 is not easy to break in the bridge plug movement process.
The bridge plug setting method provided by the invention comprises the following steps:
setting is carried out when the bridge plug reaches a designated position, the upper pressing ring 2 is pressed and conducted to the first embedded plugging structure 3 under the action of axial force, so that the innermost alloy sheet 7 at the lower end of the first embedded plugging structure 3 is contacted with the upper end of the first pressing table 11, the innermost alloy sheet 7 is extruded at the upper end of the first pressing table 11, the innermost alloy sheet 7 conducts force to the alloy sheet 7 at the outermost layer through the alloy sheets 7 which are arranged in a staggered manner layer by layer, the alloy sheet 7 at the outermost layer is extruded to the upper slips 8 outwards, and the first embedded plugging structure 3 is forced to move outwards;
the lower pressing ring 5 is pressed and transmitted to the second embedded plugging structure 4 under the action of axial force, so that the innermost alloy sheet 7 at the upper end of the second embedded plugging structure 4 is contacted with the lower end of the second pressing table 12, the lower end of the second pressing table 12 presses the innermost alloy sheet 7, the innermost alloy sheet 7 transmits force to the outermost alloy sheet 7 through the alloy sheets 7 which are arranged in a staggered manner layer by layer, the outermost alloy sheet 7 presses the lower slips 9 outwards, and the second embedded plugging structure 4 moves outwards under the action of force; the bridge plug seats against the outer wall until the integral slip table 10 is fully encased within the first and second in-line plug structures 3, 4. Thus, the bridge plug setting is completed. After bridge plug setting is completed, the alloy sheets 7 of the innermost layer are extruded by the first pressing table 11 and the second pressing table 12, the alloy sheets 7 of the innermost layer are extruded layer by layer until the alloy sheets 7 of the outermost layer are extruded, the alloy sheets 7 of the outermost layer cannot be jacked up by the alloy sheets 7 of the inner layer, and the alloy sheets 7 of the layer are tightly attached together to form a sealing structure. Fig. 2 is a schematic illustration of an embodiment of an in-line plug according to the present invention after setting.
After the setting is finished, the plugging effect of the bridge plug is not dependent on the expansion length of the outermost alloy sheet 7, but is dependent on the minimum expansion radius of the dislocation three-dimensional alloy sheet 7, and as an alternative scheme, the length of the inner alloy sheet 7 can be enhanced, so that the plugging radius formed after the bridge plug is set is consistent.
The plugging of the bridge plug can be regulated and controlled according to the actual application requirements, and the inner diameter and the inclined plane length of the integrated slip pressure table 10 can be controlled to control the expanding plugging structure of the embedded plugging structure. Meanwhile, the number of layers in the embedded plugging structure can be increased to control the radius of the plugging structure after the bridge plug is set.
Therefore, the bridge plug with the embedded plugging structure and the bridge plug setting method can solve the technical problems that in the prior art, plugging is unstable, residual particles remain after the bridge plug is dissolved, and the cost and the material consumption of the bridge plug are low.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (3)
1. An embedded plugging structure bridge plug which is characterized in that: the slip pipe comprises a central pipe shaft, wherein an upper compression ring, a first embedded plugging structure, an integrated slip compression table, a second embedded plugging structure, a lower compression ring and a positioning taper sleeve are sequentially arranged on the central pipe shaft from top to bottom;
the first embedded plugging structure comprises a plurality of alloy sheets which are arranged in a three-dimensional staggered mode, and an upper slip is arranged on the outer wall of the alloy sheet on the outermost layer of the first embedded plugging structure;
the second embedded plugging structure comprises a plurality of alloy sheets which are arranged in a three-dimensional staggered mode, and a lower slip is arranged on the outer wall of the alloy sheet on the outermost layer of the second embedded plugging structure;
the upper end of the alloy sheet of the first embedded plugging structure is connected with the lower end of the upper pressing ring, and the lower end of the alloy sheet of the second embedded plugging structure is connected with the upper end of the lower pressing ring;
the integrated slip pressing platform comprises a first pressing platform and a second pressing platform, the first pressing platform and the second pressing platform are arranged symmetrically up and down, and the first pressing platform and the second pressing platform are conical;
the embedded plugging structure bridge plug further comprises an embedded plugging structure bridge plug setting method, and the embedded plugging structure bridge plug setting method comprises the following steps:
setting is carried out when the bridge plug reaches a designated position, the upper pressing ring is pressed and transmitted to the first embedded plugging structure under the action of axial force, so that the innermost alloy sheet at the lower end of the first embedded plugging structure is contacted with the upper end of the first pressing table, the innermost alloy sheet is extruded at the upper end of the first pressing table, the innermost alloy sheet transmits the force to the alloy sheet at the outermost layer through the alloy sheets arranged in a staggered manner layer by layer, the alloy sheet at the outermost layer is extruded outwards to form an upper slip, and the first embedded plugging structure is stressed to move outwards;
the lower pressing ring is pressed and transmitted to the second embedded plugging structure under the action of axial force, so that the innermost alloy sheet at the upper end of the second embedded plugging structure is contacted with the lower end of the second pressing table, the innermost alloy sheet is extruded at the lower end of the second pressing table, the innermost alloy sheet transmits force to the alloy sheet at the outermost layer through the alloy sheets arranged in a staggered manner layer by layer, the alloy sheet at the outermost layer is extruded outwards to form a lower slip, and the second embedded plugging structure is stressed to move outwards;
until the integral slip pressing platform wraps the first embedded plugging structure and the second embedded plugging structure, the bridge plug is sealed on the outer wall, and the bridge plug is sealed.
2. The in-line occlusion structure bridge plug of claim 1, wherein: the first embedded plugging structure and the second embedded plugging structure are arranged symmetrically up and down, and the alloy sheet of the first embedded plugging structure and the alloy sheet of the second embedded plugging structure are identical in structure.
3. The in-line occlusion structure bridge plug of claim 1, wherein: the alloy sheets in the outermost alloy sheets are all provided with rubber layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311126753.2A CN116856881B (en) | 2023-09-04 | 2023-09-04 | Bridge plug with embedded plugging structure and bridge plug setting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311126753.2A CN116856881B (en) | 2023-09-04 | 2023-09-04 | Bridge plug with embedded plugging structure and bridge plug setting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116856881A CN116856881A (en) | 2023-10-10 |
| CN116856881B true CN116856881B (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311126753.2A Active CN116856881B (en) | 2023-09-04 | 2023-09-04 | Bridge plug with embedded plugging structure and bridge plug setting method thereof |
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| Publication number | Publication date |
|---|---|
| CN116856881A (en) | 2023-10-10 |
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