CN103696728B - A kind of twin-stage self sealed thermal packer - Google Patents
A kind of twin-stage self sealed thermal packer Download PDFInfo
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- CN103696728B CN103696728B CN201310748389.3A CN201310748389A CN103696728B CN 103696728 B CN103696728 B CN 103696728B CN 201310748389 A CN201310748389 A CN 201310748389A CN 103696728 B CN103696728 B CN 103696728B
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Abstract
The present invention relates to a kind of twin-stage self sealed thermal packer, be a kind of downhole tool for heavy crude heat extraction, formed by top connection, upper jacket, upper sleeve gasket, upper center tube, expansion solid, lower jacket, inner cone, lower sleeve gasket, composite slider, upper piston, lower piston, cylinder body and lower center tube. Top connection, upper center tube, inner cone, lower center tube connect from top to bottom successively by screw thread, upper jacket is connected in top connection, upper sleeve gasket is housed in it, in upper sleeve gasket, be filled with expansion solid, lower jacket is connected with upper and lower sealing shroud interference respectively, and lower jacket, lower sleeve gasket are enclosed within on inner cone, and cylinder body is connected with lower center tube by screw thread, inside is equipped with composite slider, upper piston and lower piston from top to bottom successively, and expansion solid is housed between upper and lower piston. The present invention adopts double-stage sealing structure, can realize thermal automatic setting and hydraulic booster sets, have the time of setting short, set the advantages such as lasting, good airproof performance, deblocking be smooth.
Description
Technical field
The present invention relates to a kind ofly for noting the downhole tool of high-temperature high-pressure steam heavy crude producing, belong to technical field of petroleum extraction.
Background technology
Note high-temperature high-pressure steam is a kind of effective technique of thickened oil recovery. Thermal packer is the important composition parts of steam injection tubing string, can prevent that high-temperature high-pressure steam from entering the annular space of tubing and casing and instlated tubular composition, improves heat note efficiency thereby reach, and plays the effect of protection production string. At present, the on-the-spot thermal packer using mainly contains two kinds of heat-sensitive type and heat expansion liquid formulas. Heat-sensitive type thermal packer mainly adopts bimetallic thermal expansion material, utilizes bimetallic material thermal coefficient of expansion difference, in the time that downhole temperature reaches more than 200 DEG C, produces distortion expansion packing element packing tubing and casing annular space. When being deblocking, the shortcoming of this kind of packer easily there is card well accident. Heat expansion liquid formula thermal packer mainly adopts expanded by heating liquid, heat expansion liquid is full of in the piston cylinder of thermal packer inside, in the time that downhole temperature raises, thermally-expansible liquid expanded by heating, thereby promotion piston mechanism, makes its external seal packing element packing tubing and casing annular space. This kind of in-built thermally-expansible liquid of packer has volatility, if go into the well after long-term storage, because can causing sealing property, the minimizing of expanding liquid declines, can directly enter oil jacket annular space just inject the high-temperature high-pressure steam of instlated tubular, cause sleeve pipe heated bending, cause eventually sleeve pipe discarded.
Summary of the invention
The object of the present invention is to provide and a kind of under temperature and pressure double action, can realize twin-stage automatic setting and set lasting, good airproof performance, deblocking twin-stage self sealed thermal packer smoothly.
Above-mentioned purpose of the present invention is achieved in that this kind of twin-stage self sealed thermal packer is made up of top connection, upper jacket, upper sleeve gasket, upper center tube, expansion solid, lower jacket, inner cone, lower sleeve gasket, composite slider, upper piston, lower piston, cylinder body and lower center tube, and its structure, assembled relation are as follows: top connection, upper center tube, inner cone and lower center tube are connected from top to bottom successively by screw thread; Upper jacket is threaded connection in top connection, upper sleeve gasket is housed in upper jacket, in the annular space at upper sleeve gasket middle part, be filled with expansion solid, the upper/lower terminal of lower jacket is connected with upper sleeve gasket and lower sleeve gasket interference respectively, and lower jacket and lower sleeve gasket are sleeved on inner cone; Cylinder body is connected with lower center tube by screw thread, cylinder interior is equipped with composite slider, upper piston and lower piston from top to bottom successively, upper piston and lower piston are sleeved on lower center tube, and are filled with expansion solid between upper piston and lower piston, and lower center tube is provided with flow channels.
When use, after being threaded connection, this device and steam injection string be lowered in oil well, seated well head, from steam injection string, inject high-temperature high-pressure steam, the flow channels of the high-temperature high-pressure steam injecting from lower center tube flows out and acts on lower piston body, solid expanded by heating meanwhile expands, it is up along inner cone that upper piston promotes composite slider under hydraulic coupling and expansive force double action, lower sleeve gasket is expanded under composite slider effect and to promote lower jacket up, upper sleeve gasket sets rapidly under expansion solid expanded by heating and lower jacket impetus, now lower sleeve gasket up be hampered set. when deblocking, because well head stops injecting high-temperature high-pressure steam, in tubing string, temperature declines, and expansion solid shrinks, and only needs upper lifting pipe post, and lower jacket, lower seal body, composite slider and upper piston can reset, thereby realize removing seal for packer.
The present invention adopts two-stage sealing nested structure, due to expansion solid being all housed between upper sleeve gasket inside, upper piston and lower piston, thereby can realize automatic setting, simultaneously, high-temperature high-pressure steam acts on lower piston by the flow channels on lower center tube, sets thereby realize hydraulic booster. The present invention is reasonable in design, and novel structure is simple to operate, have the time of setting short, set the advantages such as lasting, good airproof performance, deblocking be smooth, utilize it can greatly reduce production operation cost, improve the effect of Thermal Recovery For Viscous Oil By Steam.
Brief description of the drawings: accompanying drawing is general structure schematic diagram of the present invention.
Detailed description of the invention:
Below in conjunction with accompanying drawing, enforcement of the present invention is illustrated.
As shown in the figure, the present invention is made up of top connection 1, upper jacket 2, upper sleeve gasket 3, upper center tube 4, expansion solid 5, lower jacket 6, inner cone 7, lower sleeve gasket 8, composite slider 9, upper piston 10, lower piston 11, cylinder body 12 and lower center tube 13, and its structure, assembled relation are as previously mentioned. Wherein, upper sleeve gasket 3 is a sleeve body, and its middle part is provided with filling expansion solid 5 use annular spaces. Expansion solid 5 is Powdered expanded by heating material. Inner cone 7 is connected with upper center tube 4 and lower center tube 13 respectively by screw thread, and its outside lower end is provided with the conical surface and matches with the upper end conical surface of composite slider 9. The part that composite slider 9 is interior wimble structure by a upper end is made along axis cutting processing. Lower center tube 13 is provided with the flow channels 14 being connected with cylinder body 12.
Claims (1)
1. a twin-stage self sealed thermal packer, by top connection (1), upper jacket (2), upper closeBig envelope (3), upper center tube (4), expansion solid (5), lower jacket (6), inner cone(7), lower sleeve gasket (8), composite slider (9), upper piston (10), lower piston (11),Cylinder body (12) and lower center tube (13) composition, is characterized in that: top connection (1),Upper center tube (4), inner cone (7) and lower center tube (13) are by screw thread from top to bottomConnect successively, upper jacket (2) is threaded connection in top connection (1) upper, upper jacket(2) upper sleeve gasket (3) is housed in, in the annular space at upper sleeve gasket (3) middle part, is filled withExpansion solid (5), the upper/lower terminal of lower jacket (6) respectively with upper sleeve gasket (3)Interference is connected with lower sleeve gasket (8), and lower jacket (6) and lower sleeve gasket (8) are sleeved onOn inner cone (7); Cylinder body (12) is connected with lower center tube (13) by screw thread,Cylinder body (12) inside is equipped with composite slider (9), upper piston (10) from top to bottom successivelyAnd lower piston (11), upper piston (10) and lower piston (11) are sleeved on lower center tube (13)Upper, and be filled with expansion solid (5) between upper piston (10) and lower piston (11),Lower center tube (13) is provided with flow channels (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310748389.3A CN103696728B (en) | 2013-12-31 | 2013-12-31 | A kind of twin-stage self sealed thermal packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310748389.3A CN103696728B (en) | 2013-12-31 | 2013-12-31 | A kind of twin-stage self sealed thermal packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103696728A CN103696728A (en) | 2014-04-02 |
| CN103696728B true CN103696728B (en) | 2016-05-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310748389.3A Expired - Fee Related CN103696728B (en) | 2013-12-31 | 2013-12-31 | A kind of twin-stage self sealed thermal packer |
Country Status (1)
| Country | Link |
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| CN (1) | CN103696728B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859809B (en) * | 2015-02-09 | 2017-03-08 | 衡橡科技股份有限公司 | Self-closed type packer |
| CN104847298B (en) * | 2015-04-27 | 2017-09-15 | 中国石油天然气股份有限公司 | Packer (CN) |
| CN107387046A (en) * | 2017-08-03 | 2017-11-24 | 中国石油集团长城钻探工程有限公司 | A kind of thermal recovery produces integral tubular column |
| CN110424921A (en) * | 2019-08-28 | 2019-11-08 | 中研(天津)能源装备有限公司 | A kind of packer |
| CN111271019B (en) * | 2020-03-17 | 2022-05-13 | 辽宁跨克石油装备有限公司 | Packer |
| CN111350473B (en) * | 2020-03-17 | 2021-02-26 | 江苏柯沣石化机械有限公司 | Packer |
| CN113027374A (en) * | 2021-04-14 | 2021-06-25 | 盘锦博程实业有限公司 | Double-stage temperature control self-sealing device |
| CN114198048A (en) * | 2021-12-28 | 2022-03-18 | 盘锦中亚石油技术有限公司 | Novel thermal setting packer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2505589Y (en) * | 2001-04-16 | 2002-08-14 | 阚红专 | Temp.-control compression packer |
| CN2763489Y (en) * | 2005-02-01 | 2006-03-08 | 盘锦辽河油田金海麦克发有限责任公司 | Small-diameter thermal recovery packer |
| CN2802073Y (en) * | 2005-05-24 | 2006-08-02 | 辽河石油勘探局 | Sliding sealing heat production packer |
| CN201908615U (en) * | 2010-12-16 | 2011-07-27 | 中国石油天然气股份有限公司 | Layered steam injection packer |
| CN102337856A (en) * | 2010-07-16 | 2012-02-01 | 张学锋 | Novel thermally-expanded extrusion packer for viscous oil steam-injection well |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8490688B2 (en) * | 2008-01-08 | 2013-07-23 | Baker Hughes Incorporated | Methodology for setting of an inflatable packer using solid media |
-
2013
- 2013-12-31 CN CN201310748389.3A patent/CN103696728B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2505589Y (en) * | 2001-04-16 | 2002-08-14 | 阚红专 | Temp.-control compression packer |
| CN2763489Y (en) * | 2005-02-01 | 2006-03-08 | 盘锦辽河油田金海麦克发有限责任公司 | Small-diameter thermal recovery packer |
| CN2802073Y (en) * | 2005-05-24 | 2006-08-02 | 辽河石油勘探局 | Sliding sealing heat production packer |
| CN102337856A (en) * | 2010-07-16 | 2012-02-01 | 张学锋 | Novel thermally-expanded extrusion packer for viscous oil steam-injection well |
| CN201908615U (en) * | 2010-12-16 | 2011-07-27 | 中国石油天然气股份有限公司 | Layered steam injection packer |
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| Publication number | Publication date |
|---|---|
| CN103696728A (en) | 2014-04-02 |
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Granted publication date: 20160511 Termination date: 20211231 |
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