CN112127827A - Large-drift-diameter packer - Google Patents
Large-drift-diameter packer Download PDFInfo
- Publication number
- CN112127827A CN112127827A CN202011137380.5A CN202011137380A CN112127827A CN 112127827 A CN112127827 A CN 112127827A CN 202011137380 A CN202011137380 A CN 202011137380A CN 112127827 A CN112127827 A CN 112127827A
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- CN
- China
- Prior art keywords
- barrel
- slips
- packer
- hydraulic piston
- thin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 62
- 238000004873 anchoring Methods 0.000 claims abstract description 12
- 239000003129 oil well Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract 2
- 238000000605 extraction Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
- E21B33/1265—Packers; Plugs with fluid-pressure-operated elastic cup or skirt with mechanical slips
-
- 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
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1295—Packers; Plugs with mechanical slips for hooking into the casing actuated by fluid pressure
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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A large-bore packer comprising: the fishing device comprises a fishing barrel, a deblocking barrel, slips, a slip seat, a sealing thin rubber barrel and a hydraulic piston cavity, wherein the deblocking barrel, the slips, the slip seat, the sealing thin rubber barrel and the hydraulic piston cavity are sequentially arranged behind the fishing barrel; wherein, the fishing barrel, the deblocking barrel, the slips, the slip seat, the sealing thin rubber barrel and the hydraulic piston cavity are connected together to form a packer; a plurality of pressure transmitting holes are arranged in the packer, and the pressure transmitted into the pipe column can be transmitted to the hydraulic piston cavity; when the feeding pipe column is pressed, the hydraulic piston cavity is pushed to move upwards; and after the slips are anchored, continuously extruding the thin sealing rubber sleeve, expanding the thin sealing rubber sleeve, and finishing the setting of the packer. The invention can not only use the conventional maintenance tool to mill and punch the oil extraction pipe, but also realize the deblocking and recovery of the product through the mechanical transmission operation; and moreover, when the product is unpacked, the salvaging barrel can be anchored through the inner salvaging tool, the anchoring to the casing wall is eliminated, the product unpacking and recovery equipment is completed, and the maintenance efficiency of the oil production pipe column is greatly improved.
Description
Technical Field
The invention belongs to the field of petroleum engineering, and particularly relates to a large-drift-diameter packer.
Background
Currently, in oil well production operations, packers are typically used to pack the oil. The packer mainly comprises a setting mechanism, a deblocking mechanism, a rubber cylinder and a connecting piece; in the well bore, when in use, different oil layers and water layers are separated by the packer, and a certain pressure difference can be borne. However, because the clearance between the existing packer and the oil production string is too small, when the oil production string is blocked and needs to be maintained, a maintenance tool with corresponding matched size is not used for sleeve milling and sleeve punching, and certain difficulty is brought to downhole production operation.
Disclosure of Invention
The invention aims to provide a large-drift-diameter packer to solve the technical problem that the casing milling and punching operation can be carried out on an oil production pipe by using a conventional maintenance tool.
In order to achieve the purpose, the specific technical scheme of the large-drift-diameter packer is as follows:
a large-bore packer comprising: the fishing device comprises a fishing barrel, a deblocking barrel, slips, a slip seat, a sealing thin rubber barrel and a hydraulic piston cavity, wherein the deblocking barrel, the slips, the slip seat, the sealing thin rubber barrel and the hydraulic piston cavity are sequentially arranged behind the fishing barrel; wherein, the fishing barrel, the deblocking barrel, the slips, the slip seat, the sealing thin rubber barrel and the hydraulic piston cavity are connected together to form a packer; a plurality of pressure transmitting holes are arranged in the packer, and the pressure transmitted into the pipe column can be transmitted to the hydraulic piston cavity; when the feeding pipe column is pressed, the hydraulic piston cavity is pushed to move upwards; and after the slips are anchored, continuously extruding the thin sealing rubber sleeve, expanding the thin sealing rubber sleeve, and finishing the setting of the packer.
Further, the overshot is of a cylindrical structure.
Further, the deblocking cylinder is of a cylindrical structure with the same diameter and size as the overshot.
Further, the slips are of a cylindrical structure with the same diameter and size as the deblocking cylinder; and the slips are thin split type cylindrical structures.
Furthermore, the slip seat is of a cylindrical structure with the same diameter and size as the slips.
Further, the thin sealing rubber cylinder is a cylindrical structure lined with a metal framework, and is vulcanized on the metal framework; and the diameter of the thin sealing rubber cylinder is the same as that of the slip seat.
Further, the outer diameter of the hydraulic piston cavity is the same as the diameter of the sealing thin rubber cylinder; when the oil well casing is sent into the pipe column to be pressed, the hydraulic piston cavity is pushed to move upwards, the sealing thin rubber cylinder is extruded to expand, the slip seat is further pushed, and the slips are extruded, so that the anchoring of the oil well casing is realized.
Furthermore, pressure can be conducted among the slips, the slip seat, the thin sealing rubber cylinder and the hydraulic piston cavity.
The invention also provides a working method of the large-drift-diameter packer, the large-drift-diameter packer is arranged, and the large-drift-diameter packer adopts the following working steps:
the first step is as follows: when setting, the hydraulic piston cavity is pushed to move upwards by pressing in the feeding pipe column, and the sealing thin rubber cylinder is extruded;
the second step is that: when the hydraulic piston cavity extrudes the sealing thin rubber cylinder, the slip seat is pushed by the force transmission of the sealing thin rubber cylinder; then, extruding the slips to simultaneously expand two ends of the slips outwards so as to form anchoring to the casing;
the third step: after the slips are anchored, the thin sealing rubber barrel is completely extruded and expanded towards the direction of the casing wall to seal the casing, and at the moment, the setting of the large-drift-diameter packer is completed, so that the oil layer is sealed.
The large-drift-diameter packer has the following advantages:
the product is subjected to deblocking and recycling through mechanical transmission operation because the deblocking cylinder is arranged above the anchoring slip;
after the fishing rod is lowered, the safe hand-off lower joint is left in the well to form a fishing barrel; a special fishing groove is reserved on the fishing net, so that the product can be recovered and fished conveniently;
when the product is unpacked, the fishing barrel is anchored by the inner fishing tool, and the operation is carried out by lifting the pipe column or the steel cable; pulling off the deblocking shear pin in the deblocking cylinder, enabling the deblocking cylinder to go upwards along with the fishing cylinder, releasing the anchoring slip, enabling the anchoring slip to rebound, and eliminating the anchoring of the casing wall;
releasing the sealing rubber cylinder to remove sealing, and completing product deblocking;
carrying out lifting of the tubular column or the steel cable and recovering the equipment.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the structure assembly of the present invention;
FIG. 3 is a schematic view of a thin sealing rubber cylinder with a metal framework according to the present invention;
FIG. 4 is a schematic view of the split tubular thin slips of the present invention.
The notation in the figure is:
1-a fishing barrel; 2-unsealing the cylinder; 3-slips; 4-a slip seat; 5-sealing the thin rubber cylinder; 6-hydraulic piston chamber.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, a large-bore packer according to the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the present invention includes: the fishing device comprises a fishing barrel 1, an unsealing barrel 2, a slip 3, a slip seat 4, a thin sealing rubber barrel 5 and a hydraulic piston cavity 6, wherein the unsealing barrel 2, the slip 3, the slip seat 4, the thin sealing rubber barrel 5 and the hydraulic piston cavity are sequentially arranged behind the fishing barrel 1; wherein, the fishing barrel 1, the deblocking barrel 2, the slips 3, the slip seat 4, the thin sealing rubber barrel 5 and the hydraulic piston cavity 6 are connected together to form a packer; a plurality of pressure transmission holes are arranged in the hydraulic piston cavity 6, and the pressure transmitted into the pipe column can be transmitted to the hydraulic piston cavity 6; when the packer is sent into a pipe column to be pressed, the hydraulic piston cavity 6 moves upwards to extrude the thin sealing rubber cylinder 5, meanwhile, the thin sealing rubber cylinder 5 transfers force and pushes the slip seat 4 to extrude the slip 3, and after the slip 3 is anchored, the thin sealing rubber cylinder 5 is continuously extruded, so that the thin sealing rubber cylinder 5 is expanded, and the packer setting is completed.
The overshot 1 is of a cylindrical structure;
the deblocking cylinder 2 is a cylindrical structure with the same diameter and size as the overshot 1;
the slips 3 are of a cylindrical structure with the same diameter and size as the unsealing barrel 2; the slips 3 are thin split type cylindrical structures; namely: the two ends of the slip 3 are respectively expanded outwards by extruding the two ends of the slip to form the bidirectional thin slip, so that the anchoring of the casing wall is realized.
The slip seat 4 is a cylindrical structure with the same diameter and size as the slips 3;
as shown in fig. 3, the thin sealing rubber tube 5 is a tubular structure lined with a metal skeleton, and the thin sealing rubber tube 5 is vulcanized on the metal skeleton; the diameter of the thin sealing rubber cylinder 5 is the same as that of the slip seat 4;
the outer diameter of the hydraulic piston cavity 6 is the same as the diameter of the sealing thin rubber cylinder 5; when the oil well casing is sent into the pipe column to be pressed, the hydraulic piston cavity 6 is pushed to move upwards, the sealing thin rubber cylinder 5 is extruded to expand, the slip seat 4 is further pushed, and the slip 3 is extruded, so that the anchoring of the oil well casing is realized. The sealing thin rubber tube 5 can be prevented from being extruded and separated when the underground pressure is too large, and the sealing performance of the sealing thin rubber tube 5 is enhanced.
Pressure can be conducted among the slips 3, the slip seat 4, the sealing thin rubber cylinder 5 and the hydraulic piston cavity 6;
the fishing barrel 1 is lifted through the fishing tool, the pin of the deblocking barrel 2 is cut, and deblocking is realized through the slips 3 and the rubber barrel.
The working principle of the invention is as follows:
the buttons of the invention are all API standard buttons, thus being convenient for connecting with other on-site tools. The invention is lowered to a preset throwing position along with the oil well casing, and is pressed in the operation pipe column, at the moment, the hydraulic pressure passes through a plurality of pressure transfer holes in the oil well casing and directly acts on the hydraulic piston cavity 6. The hydraulic piston cavity 6 is displaced and pushes the sealing thin rubber cylinder 5 and the slip seat 4 in sequence. The sealing of the thin sealing rubber cylinder 5 and the setting of the slips 3 are realized. When the fishing is unsealed, a standard fishing tool is adopted to anchor the fishing barrel 1; lifting the fishing tool, pulling off the unsealing shear pin in the unsealing barrel 2, releasing the slips 3 and the sealing thin rubber barrel 5, and recycling the product. The invention has safe and reliable performance and multiple advantages, and is worth of being popularized and applied on site. The invention adopts the following working steps:
firstly, when setting, the hydraulic piston cavity 6 is pushed to move upwards by pressing in the feeding pipe column, and the sealing thin rubber cylinder 5 is extruded;
secondly, when the hydraulic piston cavity 6 extrudes the sealing thin rubber cylinder 5, the slip seat 4 is pushed by the force transferred by the sealing thin rubber cylinder 5; then, the slips 3 are squeezed, so that two ends of the slips 3 are simultaneously expanded outwards to form anchoring to the casing;
thirdly, after the slips 3 are anchored, the thin sealing rubber cylinder 5 is completely extruded and expanded towards the direction of the casing wall, the casing is sealed, at the moment, the setting of the large-drift-diameter packer is completed, and the oil layer is sealed.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixed or detachably or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The oil well casing and the inner pipe column are the prior art, and the unexplained technology is the prior art, so that the details are not repeated.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. A large-drift-diameter packer is characterized by comprising: the fishing device comprises a fishing barrel, a deblocking barrel, slips, a slip seat, a sealing thin rubber barrel and a hydraulic piston cavity, wherein the deblocking barrel, the slips, the slip seat, the sealing thin rubber barrel and the hydraulic piston cavity are sequentially arranged behind the fishing barrel; wherein, the fishing barrel, the deblocking barrel, the slips, the slip seat, the sealing thin rubber barrel and the hydraulic piston cavity are connected together to form a packer; a plurality of pressure transmitting holes are arranged in the packer, and the pressure transmitted into the pipe column can be transmitted to the hydraulic piston cavity; when the feeding pipe column is pressed, the hydraulic piston cavity is pushed to move upwards; and after the slips are anchored, continuously extruding the thin sealing rubber sleeve, expanding the thin sealing rubber sleeve, and finishing the setting of the packer.
2. The large-bore packer of claim 1, wherein the overshot is a cylindrical structure.
3. The large-drift-diameter packer of claim 1, wherein the deblocking cylinder is a cylinder with the same diameter size as the overshot cylinder.
4. The large-drift-diameter packer of claim 1, wherein the slips are of a cylindrical structure having the same diameter dimension as the deblocking cylinder; and the slips are thin split type cylindrical structures.
5. The large-drift-diameter packer of claim 1, wherein the slip bowl is a cylindrical structure having the same diameter dimension as the slips.
6. The large-drift-diameter packer as claimed in claim 1, wherein the thin sealing rubber sleeve is a metal skeleton lined cylindrical structure, and the thin sealing rubber sleeve is vulcanized on the metal skeleton; and the diameter of the thin sealing rubber cylinder is the same as that of the slip seat.
7. The large-drift-diameter packer of claim 1, wherein the outer diameter of the hydraulic piston cavity is the same size as the diameter of the sealing thin rubber cylinder; when the oil well casing is sent into the pipe column to be pressed, the hydraulic piston cavity is pushed to move upwards, the sealing thin rubber cylinder is extruded to expand, the slip seat is further pushed, and the slips are extruded, so that the anchoring of the oil well casing is realized.
8. The large-bore packer of claim 1, 4, 5, 6 or 7, wherein pressure can be conducted between the slips, the slip bowl, the thin sealing rubber cylinder and the hydraulic piston chamber.
9. A method for operating a large-drift-diameter packer, which is characterized in that the large-drift-diameter packer as claimed in claim 1-claim 8 is arranged, and the following operating steps are adopted:
the first step is as follows: when setting, the hydraulic piston cavity is pushed to move upwards by pressing in the feeding pipe column, and the sealing thin rubber cylinder is extruded;
the second step is that: when the hydraulic piston cavity extrudes the sealing thin rubber cylinder, the slip seat is pushed by the force transmission of the sealing thin rubber cylinder; then, extruding the slips to simultaneously expand two ends of the slips outwards so as to form anchoring to the casing;
the third step: after the slips are anchored, the thin sealing rubber barrel is completely extruded and expanded towards the direction of the casing wall to seal the casing, and at the moment, the setting of the large-drift-diameter packer is completed, so that the oil layer is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011137380.5A CN112127827A (en) | 2020-10-22 | 2020-10-22 | Large-drift-diameter packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011137380.5A CN112127827A (en) | 2020-10-22 | 2020-10-22 | Large-drift-diameter packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112127827A true CN112127827A (en) | 2020-12-25 |
Family
ID=73853341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011137380.5A Pending CN112127827A (en) | 2020-10-22 | 2020-10-22 | Large-drift-diameter packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112127827A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458223A (en) * | 2021-07-06 | 2022-05-10 | 中海油能源发展股份有限公司 | Layered packer for large-drift-diameter water injection and using method thereof |
| CN114687690A (en) * | 2022-03-31 | 2022-07-01 | 中海石油(中国)有限公司 | Slip setting mechanism and underground throttle comprising same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858398A (en) * | 2006-05-25 | 2006-11-08 | 东营市祥生工贸有限责任公司 | Back-off packer |
| CN101696623A (en) * | 2009-10-29 | 2010-04-21 | 辽宁奥夫斯达石油装备有限公司 | Steel wire cord expanding rubber packer for oil or gas well |
| CN101929323A (en) * | 2009-06-19 | 2010-12-29 | 张俊 | Sealed packing element for deep swabbing of oil well |
| CN102071893A (en) * | 2010-12-03 | 2011-05-25 | 中国石油天然气股份有限公司 | Underground self-expansion hanger |
| CN202152661U (en) * | 2011-06-23 | 2012-02-29 | 中国石油天然气股份有限公司 | Anchoring type graded deblocking packer for oil well |
| CN206917631U (en) * | 2017-06-10 | 2018-01-23 | 陕西双威石油机械有限公司 | Can bore can drag for the anti-pollution packer of horizontal well |
| CN110778287A (en) * | 2019-12-13 | 2020-02-11 | 孙肖 | Use method of double-hydraulic bidirectional anchoring packer |
| CN111396007A (en) * | 2020-04-13 | 2020-07-10 | 天津克睿特维科技发展有限公司 | Separate-layer water injection string for oil exploitation and water injection process thereof |
-
2020
- 2020-10-22 CN CN202011137380.5A patent/CN112127827A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858398A (en) * | 2006-05-25 | 2006-11-08 | 东营市祥生工贸有限责任公司 | Back-off packer |
| CN101929323A (en) * | 2009-06-19 | 2010-12-29 | 张俊 | Sealed packing element for deep swabbing of oil well |
| CN101696623A (en) * | 2009-10-29 | 2010-04-21 | 辽宁奥夫斯达石油装备有限公司 | Steel wire cord expanding rubber packer for oil or gas well |
| CN102071893A (en) * | 2010-12-03 | 2011-05-25 | 中国石油天然气股份有限公司 | Underground self-expansion hanger |
| CN202152661U (en) * | 2011-06-23 | 2012-02-29 | 中国石油天然气股份有限公司 | Anchoring type graded deblocking packer for oil well |
| CN206917631U (en) * | 2017-06-10 | 2018-01-23 | 陕西双威石油机械有限公司 | Can bore can drag for the anti-pollution packer of horizontal well |
| CN110778287A (en) * | 2019-12-13 | 2020-02-11 | 孙肖 | Use method of double-hydraulic bidirectional anchoring packer |
| CN111396007A (en) * | 2020-04-13 | 2020-07-10 | 天津克睿特维科技发展有限公司 | Separate-layer water injection string for oil exploitation and water injection process thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458223A (en) * | 2021-07-06 | 2022-05-10 | 中海油能源发展股份有限公司 | Layered packer for large-drift-diameter water injection and using method thereof |
| CN114458223B (en) * | 2021-07-06 | 2023-10-31 | 中海油能源发展股份有限公司 | Layered packer for large-drift-diameter water injection and application method thereof |
| CN114687690A (en) * | 2022-03-31 | 2022-07-01 | 中海石油(中国)有限公司 | Slip setting mechanism and underground throttle comprising same |
| CN114687690B (en) * | 2022-03-31 | 2024-03-29 | 中海石油(中国)有限公司 | Slip setting mechanism and downhole throttler comprising same |
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Application publication date: 20201225 |