CN202882841U - Pipe external packer capable of being self-expandable when encountering water or oil - Google Patents
Pipe external packer capable of being self-expandable when encountering water or oil Download PDFInfo
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- CN202882841U CN202882841U CN201220502306.3U CN201220502306U CN202882841U CN 202882841 U CN202882841 U CN 202882841U CN 201220502306 U CN201220502306 U CN 201220502306U CN 202882841 U CN202882841 U CN 202882841U
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Abstract
The utility model provides a pipe external packer capable of being self-expandable when encountering water or oil. The pipe external packer capable of being self-expandable when encountering the water or the oil comprises a center pipe, rubber tubes and block rings, wherein the rubber tubes and the block rings are sleeved on the center pipe. A plurality of the rubber tubes are spaced by the block rings and fixed on the outer wall of the center pipe by an upper block cap and lower block cap. The rubber tubes are capable of being self-expandable when encountering the water or the oil. When in well-completion practice, the pipe external packer capable of being self-expandable when encountering the water or the oil is connected with a bushing in series through inner threads of an upper connector and outer threads of a lower connector, and down into a well together to a designated spot, liquid soaks rubber capable of expanding when encountering water and rubber capable of expanding when encountering oil, after a period of time, the rubber capable of expanding when encountering the water absorbs the water and automatically expands, rubber capable of expanding when encountering the oil absorbs the oil and automatically expands, and a purpose of sealing a borehole is achieved. The pipe external packer capable of being self-expandable when encountering the water or the oil has the advantages of being capable of effectively controlling water in a subsection mode, prolonging service life of an oil well, controlling production in the subsection mode, being high in expansion rate, and being capable of effectively sealing, simple in structure, convenient to construct, and high in reliability.
Description
Technical field
The utility model is that the chance oil in a kind of petroleum oil well completion power tool field is met the water pipe external packer.
Background technology
Horizontal well is widely used at present as a kind of means of Effective Raise oil well recovery ratio.Horizontal well completion mainly contains well cementation perforation and two kinds of completion modes of screen casing bore hole, but the horizontal well characteristics are oil reservoir well segment lengths, and cementing quality is difficult to guarantee; Sieve tube completion is full section bore hole especially.These two kinds of completion modes all can not be avoided the full well section of water logging, the problem that fracturing yield increasing operation implementation result is poor.Therefore need to adopt an effective measure is divided into a plurality of segments with horizontal hole, to realize the technical measures such as segmentation control water, segmentation manufacture control, staged fracturing volume increase.Now the filling medium of fill-type packer commonly used generally is water or mud, and not curable, under formation condition, in a single day packing element breaks, and filling medium will leak and cause packing to be lost efficacy.Therefore need to a kind ofly can adapt to the down-hole irregular borehole and packing element is expanded and prevent the packer of its inefficacy.
Summary of the invention
The purpose of this utility model is for the problem that prior art exists, and provides a kind of and has simple in structure, easy and simple to handle, packing distance, long-lived chance oil is met water self-expanding external packer of pipe.
The utility model is achieved in that a kind of oil chance water self-expanding external packer of pipe of meeting comprises central tube and is sleeved on central tube outer packing element, baffle ring, packing element is by after passing through the baffle ring interval between a plurality of packing elements, be fixed on the central tube outer wall by upper and lower gear cap, packing element wherein adopts the rubber tube of meeting water or meeting oily self-expanding.
Perform and all adopt static seal between cap, baffle ring, lower gear cap and the central tube.Described packing element quantity is 3-9.
During completion practice, external screw thread by top connection internal thread, lower contact is lowered to the sleeve pipe series winding, after being lowered into assigned address, soaked with liquid hydro-expansive rubber and oil swellable rubber, hydro-expansive rubber suction automatic expansion after a period of time, oil swellable rubber oil suction automatic expansion, external diameter increases and borehole wall close contact, reaches the purpose of packing well.
The utility model becomes multistage with the horizontal hole packing.Have the following advantages:
(1) segmentation control water prolongs the oil well production life-span;
(2) segmentation production control;
(3) expansion rate is high, effectively packing;
(4) in work progress, need not mechanical assistance and just can realize the rubber automatic expansion;
(5) simple in structure, construction operation is convenient, simplifies flow chart, and reliability is high.
Description of drawings
Fig. 1 is a kind of structural representation that oil is met water self-expanding external packer of pipe of meeting.
Top connection 1, central tube 2, upper gear cap 3, packing element 4, baffle ring 5, center packing element 6, lower gear cap 7, lower contact 8.
The specific embodiment
Now the utility model will be further described in conjunction with Figure of description.
As shown in the figure, this packer top connection 1 is threaded connection with central tube 2, between upper gear cap 3 and the baffle ring 5 packing element 4 is arranged, center packing element 6 is arranged in the middle of the baffle ring 5, between baffle ring 5 and the lower block cap 7 packing element 4 is arranged, a whole set of structure is about center packing element 6 symmetries, and the external screw thread of the internal thread of top connection 1, lower contact 8 is connected with sleeve pipe.Perform and all adopt static seal between cap 3, baffle ring 5, lower gear cap 7 and the central tube 2.But packing element is made by the rubber of oil and water contact expansible.Shelves ring and shelves cap can stop that packing element extends axially when expanding.During the packing element completion practice, external screw thread by top connection 1 internal thread, lower contact 8 is lowered to the sleeve pipe series winding, after being lowered into assigned address, meet oil (or water) and soak packing element 4 and center packing element 6, packing element 4 and center packing element 6 suction automatic expansions after a period of time, external diameter increases and borehole wall close contact, reaches the purpose of packing well.
Claims (3)
1. meet oil chance water self-expanding external packer of pipe for one kind, comprise central tube and be sleeved on central tube outer packing element, baffle ring, it is characterized in that: packing element is by after passing through the baffle ring interval between a plurality of packing elements, be fixed on the central tube outer wall by upper and lower gear cap, packing element wherein adopts the rubber tube of meeting water or meeting oily self-expanding.
2. a kind of chance oil as claimed in claim 1 is met water self-expanding external packer of pipe, it is characterized in that: all adopt static seal between the cap that performs, baffle ring, lower gear cap and the central tube.
3. a kind of chance oil as claimed in claim 1 or 2 is met water self-expanding external packer of pipe, and it is characterized in that: described packing element quantity is 3-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220502306.3U CN202882841U (en) | 2012-09-28 | 2012-09-28 | Pipe external packer capable of being self-expandable when encountering water or oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220502306.3U CN202882841U (en) | 2012-09-28 | 2012-09-28 | Pipe external packer capable of being self-expandable when encountering water or oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202882841U true CN202882841U (en) | 2013-04-17 |
Family
ID=48074281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220502306.3U Expired - Fee Related CN202882841U (en) | 2012-09-28 | 2012-09-28 | Pipe external packer capable of being self-expandable when encountering water or oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202882841U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201445A (en) * | 2014-06-26 | 2015-12-30 | 中国石油化工股份有限公司 | Rubber sleeve for packer and packer |
| CN107100581A (en) * | 2017-06-01 | 2017-08-29 | 中国石油集团渤海钻探工程有限公司 | A kind of big orifice combined type Self-expandable packer |
| CN109944569A (en) * | 2017-11-27 | 2019-06-28 | 李明 | A kind of petroleum underground operation tool |
| CN110699110A (en) * | 2019-10-23 | 2020-01-17 | 东营联合石化有限责任公司 | Water trap is used in petroleum refining atmospheric and vacuum |
| CN110725660A (en) * | 2017-11-27 | 2020-01-24 | 李明 | Multistage releasable water-swelling packer and method |
| CN110792409A (en) * | 2019-11-13 | 2020-02-14 | 中国地质调查局武汉地质调查中心(中南地质科技创新中心) | Time-sharing self-expansion bag type packer |
| CN111535294A (en) * | 2020-05-22 | 2020-08-14 | 长江勘测规划设计研究有限责任公司 | Multifunctional drain hole orifice device adaptive to irregular hole wall structure |
| CN111577195A (en) * | 2020-06-03 | 2020-08-25 | 中国石油天然气股份有限公司 | Horizontal well separate mining device |
-
2012
- 2012-09-28 CN CN201220502306.3U patent/CN202882841U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201445A (en) * | 2014-06-26 | 2015-12-30 | 中国石油化工股份有限公司 | Rubber sleeve for packer and packer |
| CN105201445B (en) * | 2014-06-26 | 2018-03-30 | 中国石油化工股份有限公司 | Packing element and packer for packer |
| CN107100581A (en) * | 2017-06-01 | 2017-08-29 | 中国石油集团渤海钻探工程有限公司 | A kind of big orifice combined type Self-expandable packer |
| CN109944569A (en) * | 2017-11-27 | 2019-06-28 | 李明 | A kind of petroleum underground operation tool |
| CN110725660A (en) * | 2017-11-27 | 2020-01-24 | 李明 | Multistage releasable water-swelling packer and method |
| CN110699110A (en) * | 2019-10-23 | 2020-01-17 | 东营联合石化有限责任公司 | Water trap is used in petroleum refining atmospheric and vacuum |
| CN110699110B (en) * | 2019-10-23 | 2021-08-24 | 东营联合石化有限责任公司 | Water trap is used in petroleum refining atmospheric and vacuum |
| CN110792409A (en) * | 2019-11-13 | 2020-02-14 | 中国地质调查局武汉地质调查中心(中南地质科技创新中心) | Time-sharing self-expansion bag type packer |
| CN111535294A (en) * | 2020-05-22 | 2020-08-14 | 长江勘测规划设计研究有限责任公司 | Multifunctional drain hole orifice device adaptive to irregular hole wall structure |
| CN111577195A (en) * | 2020-06-03 | 2020-08-25 | 中国石油天然气股份有限公司 | Horizontal well separate mining device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20210928 |