CN101509361A - Remediable scale scraping packer - Google Patents
Remediable scale scraping packer Download PDFInfo
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- CN101509361A CN101509361A CNA2008100145753A CN200810014575A CN101509361A CN 101509361 A CN101509361 A CN 101509361A CN A2008100145753 A CNA2008100145753 A CN A2008100145753A CN 200810014575 A CN200810014575 A CN 200810014575A CN 101509361 A CN101509361 A CN 101509361A
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- rubber
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- tube
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Abstract
A subsidized scale scraping packer comprises an upper joint, a lower joint, a central tube, a spacer ring, a rubber cylinder, a liquid rubber, curing agent and a scale scraper. The rubber cylinder is a cylindraceous rubber body; the center of a lateral surface is a downward groove; the liquid rubber encircles and fills the groove; the curing agent is positioned around the outside of the liquid rubber; the curing agent internally contains consolidation agent, expansion agent and adhesive agent; diaphragms are coated among material agent of each layer. The scale scraper is driven by an oil pipe string to scrape the rust on a casing wall on the pre-seal section; the rubber is compressed to expand outward by axial force so that the diaphragms coated among each material agent break; the liquid rubber fills a pit on the inner wall of the casing and expands and is cured by the curing agent; the liquid rubber and the adhesive agent simultaneously act and are fixed on the inner wall of the casing by splicing to achieve the sealing effect. By being sealed and consolidated with the inner wall of the casing, the rubber of the subsidized scale scraping packer can also be made into an adhesive mortar bi-component concentric adhesive rod and is filled in a ring groove. The curing agent can be coated on the lateral surface of the rubber in membrane shape; the metal surface of each component can undergo electroplating or surface electrochemical coating treatment.
Description
The invention discloses a kind of Remediable scale scraping packer.
Background technology
The packer that oil exploitation at present, water filling are used is to utilize the expansion of rubber to come Sealed casing pipe, reaches the separation oil reservoir, realizes seperated layer water injection oil recovery purpose.Internal surface of sleeve pipe surface originally is smooth, sealing effectiveness is good, but because sleeve pipe is in the underground burn into scale effect that is subjected to sewage, the surface forms concavo-convex within it, bad rubber tube can be pricked in concavo-convex surface, also makes packer rubber can not be close to internal surface of sleeve pipe and miss and gang up, and separates the oil reservoir failure, cause the waterflooding development effect variation, oil recovery reduces.Simultaneously, because the corrosion of underground sewage causes packer corrosion thing card to get lodged on the sleeve pipe, tubing string pulls out the accident of not coming out when causing remaking industry.
Summary of the invention
Task of the present invention is: design a kind of Remediable scale scraping packer, solve packer because the uneven rubber of internal surface of sleeve pipe can not be close to inside pipe wall and miss and gang up, cause the oil-separating layer failure problem.
The present invention realizes in the following way: Remediable scale scraping packer is scraped dirty body, 10 odontexesis, 11 stage clips, 12 circumferential band, 13 lower contacts by 1 top connection, 2 central tubes, 3 spacer rings, 4 rubber tubes, 5 cannelures, 6 fluid rubber, 7 curing compound, 8 barrier films, 9 and is formed.Rubber tube (4) is a rubber bodies cylindraceous, the lateral surface center is downward groove, in groove around fill fluid rubber (6), fluid rubber outsourcing one deck curing compound (7), curing compound includes consolidating agent, expansion agent and bonding agent, applies barrier film (8) between each layer agent.Be installed on the tubing string when can the subsidy formula scraping dirty packer, be lowered to the precalculated position, tubing string drives to be scraped the dirty body segment distance that moves up and down the rust of the dirt on the pre-sealed section internal surface of sleeve pipe is struck off, rubber tube is imposed the axial force compression outwards to expand, make and apply membrane ruptures between each agent, the filling of fluid rubber is in the hole of internal surface of sleeve pipe is recessed, cheat recessed in, curing compound makes its expansion curing simultaneously, act on simultaneously with cementing agent and to be adhesively fixed on the internal surface of sleeve pipe, reach sealing effectiveness, owing to all be the rubber bodies material, when construction proposes tubing string again rubber bodies destroyed to extract getting final product.For making the unlikely corrosion of metalwork block tubing string, the metal surface of parts can be electroplated or the processing of surface electrochemistry coating.
Beneficial effect of the present invention
1, realized self subsidy sleeve pipe, good sealing effect does not damage rubber tube, uses for a long time, improves the water filling waterflood efficiency, many quarrying oil.2, realized that self-contained scraper scrapes dirt, easy construction.3, packing element sticks on the sleeve pipe, prevents the tubing string wriggling, damages packing element.4, can prevent that the metal erosion thing from causing blocks tubing string.
Description of drawings
Fig. 1 is a kind of assembling schematic diagram of can the subsidy formula scraping dirty packer;
Can the subsidy formula scrape dirty packer by 1 top connection, 2 central tubes,, 3 spacer rings, 4 rubber tubes, 5 cannelures, 6 fluid rubber, 7 curing compound, 8 barrier films, 9 scrape dirty body, 10 odontexesis, 11 stage clips, 12 circumferential band, 13 lower contacts and form.
The specific embodiment
Remediable scale scraping packer top connection upper end is top connection (1), top connection is circular steel cylinder, upper end system internal thread connects the top oil pipe, system external screw thread in lower end connects the interior rib-loop of central tube (2), central tube (2) is that the tapped steel pipe in two ends is connected with last lower contact external screw thread respectively, and central tube (2) is gone up suit spacer ring (3), rubber tube (4) is scraped each parts of dirty body (9).Spacer ring (3) is circular steel cylinder, and 2 of spacer rings are placed on rubber tube (4) two ends, plays centralizing function.Rubber tube (4) is a rubber bodies cylindraceous, effect is a sealing big envelope pipe, its outside, two ends chamfering, the cannelure (5) of lateral surface side of cutting out, middle part or circle, place fluid rubber (6) in the cannelure (5), fluid rubber is semi-fluid condition, effect be filled to internal surface of sleeve pipe hole recessed in, place curing compound (7) around outside the fluid rubber, curing compound is a flowing material, include consolidating agent, expansion agent and bonding agent, effect is in case of necessity the fluid rubber swelling to be solidified and be bonded on internal surface of sleeve pipe and the rubber tube, reaches sealing.Barrier film (8) is to isolate the fexible film of each layer material in the time need not mixing.Scrape dirty body (9) and form, be contained in central tube (1) and go up the rubber tube bottom by odontexesis (10), stage clip (11), circumferential band (12).Scraping dirty body effect is the dirt rust that strikes off on the internal surface of sleeve pipe, odontexesis (10) is rectangular strip shape body, the equal portion of 3-4 bar is steps at two ends, the outside on central tube, the in line or oblique row's of upper surface system canine tooth, elongated slot is dug out in the inboard, place stage clip (11) in the groove, odontexesis elastic force is given in the effect of stage clip, and circumferential band (12) is two ring bodies, be enclosed within on the two ends step of odontexesis and fixing, the lateral surface drilling is enclosed within on the central tube.Lower contact (13) upper end system internal and external threads, the upper end internal thread connects central tube, and the lower end external screw thread connects oil pipe, is connector.Rubber tube of Remediable scale scraping packer (4) and the fixed concentric glue rod of clay bi-component of also can making of internal surface of sleeve pipe sealing, filling are in cannelure (5), by the construction of well temperature requirement prescription.Also curing compound (7) can be made membranaceous applying at rubber tube (4) lateral surface.For preventing that the metal erosion thing from blocking the tubing string accident, the metal surface of parts can be electroplated or the processing of surface electrochemistry coating.
Operating principle: Remediable scale scraping packer is connected on the tubing string, be lowered to the precalculated position, since odontexesis under stage clip (11) resilient support diameter greater than casing inner diameter, driving the segment distance that moves up and down by tubing string strikes off the rust of the dirt on the pre-sealed section casing wall, rubber tube outwards expands in the extruding lower compression of axial force, make and apply membrane ruptures between each agent, the filling of fluid rubber is in the hole of internal surface of sleeve pipe is recessed, curing compound makes its expansion curing simultaneously, act on simultaneously with cementing agent and to be adhesively fixed on the internal surface of sleeve pipe, reach sealing effectiveness, owing to be the rubber bodies material all, constructing the rubber bodies surface breakdown to be extracted when proposing tubing string gets final product again.
Claims (4)
1. one by top connection (1), central tube (2), spacer ring (3), rubber tube (4), cannelure (5), fluid rubber (6), curing compound (7), barrier film (8), scrape dirty body (9), odontexesis (10), stage clip (11), circumferential band (12), Remediable scale scraping packer is formed in lower contact (13), it is characterized in that: top connection (1) is circular steel cylinder, upper end system internal thread connects the top oil pipe, system internal thread in lower end connects the external screw thread of central tube (2), central tube (2) is that band externally threaded steel pipe in two ends is connected with last lower contact internal thread respectively, central tube (2) is gone up suit spacer ring (3), rubber tube (4) is scraped each parts of dirty body (9), spacer ring (3) is circular steel cylinder, 2 of spacer rings are placed on rubber tube (4) two ends, rubber tube (4) is a rubber bodies cylindraceous, its outside, two ends chamfering, the cannelure (5) of lateral surface side of making, middle part or circle, place fluid rubber (7) in the cannelure (5), fluid rubber is semi-fluid condition, place curing compound (7) around the fluid rubber, curing compound is a flowing material, include consolidating agent, expansion agent and bonding agent, barrier film (9) is to isolate the fexible film of each layer material in the time need not mixing, scrape dirty body (9) by odontexesis (10), stage clip (11), circumferential band (12) is formed, be contained in rubber tube bottom on the central tube, odontexesis (10) is rectangular strip shape body, the 3-4 bar is distributed on the central tube, two ends, the odontexesis outside are steps, in line or the oblique row's of upper surface system canine tooth, elongated slot is dug out in the inboard, place stage clip (11) in the groove, circumferential band (12) is two ring bodies, be enclosed within on the two ends step of odontexesis and fixing, the drilling of circumferential band lateral surface is enclosed within on the central tube, lower contact (13) upper and lower side system internal and external threads, the upper end internal thread connects central tube, and the lower end external screw thread connects oil pipe.
2. Remediable scale scraping packer according to claim 1 is characterized in that: rubber tube (4) and the fixed concentric glue rod of clay bi-component of also can making of internal surface of sleeve pipe sealing, filling is in cannelure (5).
3. Remediable scale scraping packer according to claim 1 is characterized in that: its sealing also can be made curing compound (7) membranaceous applying at rubber tube (4) lateral surface.
4. Remediable scale scraping packer according to claim 1 is characterized in that: electroplate on the surface of each metal parts or electrochemical coating is handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100145753A CN101509361A (en) | 2008-02-13 | 2008-02-13 | Remediable scale scraping packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100145753A CN101509361A (en) | 2008-02-13 | 2008-02-13 | Remediable scale scraping packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101509361A true CN101509361A (en) | 2009-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100145753A Pending CN101509361A (en) | 2008-02-13 | 2008-02-13 | Remediable scale scraping packer |
Country Status (1)
| Country | Link |
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| CN (1) | CN101509361A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106686933A (en) * | 2017-03-29 | 2017-05-17 | 河南鑫海电力设备有限公司 | Electrical sheath capable of automatically coating sealing adhesive |
| CN112096309A (en) * | 2019-06-18 | 2020-12-18 | 中国石油化工股份有限公司 | Shock isolation device for well drilling |
| CN112096339A (en) * | 2019-06-18 | 2020-12-18 | 中国石油化工股份有限公司 | Automatic packing device for casing |
| CN113027377A (en) * | 2021-05-27 | 2021-06-25 | 东营市正能石油科技有限公司 | Packer for oil production |
| CN113153214A (en) * | 2021-03-24 | 2021-07-23 | 大庆市天德忠石油科技有限公司 | Sealing structure for soluble bridge plug |
-
2008
- 2008-02-13 CN CNA2008100145753A patent/CN101509361A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106686933A (en) * | 2017-03-29 | 2017-05-17 | 河南鑫海电力设备有限公司 | Electrical sheath capable of automatically coating sealing adhesive |
| CN112096309A (en) * | 2019-06-18 | 2020-12-18 | 中国石油化工股份有限公司 | Shock isolation device for well drilling |
| CN112096339A (en) * | 2019-06-18 | 2020-12-18 | 中国石油化工股份有限公司 | Automatic packing device for casing |
| CN112096339B (en) * | 2019-06-18 | 2022-02-18 | 中国石油化工股份有限公司 | Automatic packing device for casing |
| CN113153214A (en) * | 2021-03-24 | 2021-07-23 | 大庆市天德忠石油科技有限公司 | Sealing structure for soluble bridge plug |
| CN113153214B (en) * | 2021-03-24 | 2022-03-29 | 大庆市天德忠石油科技有限公司 | Sealing structure for soluble bridge plug |
| CN113027377A (en) * | 2021-05-27 | 2021-06-25 | 东营市正能石油科技有限公司 | Packer for oil production |
| CN113027377B (en) * | 2021-05-27 | 2022-03-11 | 东营市正能石油科技有限公司 | Packer for oil production |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090819 |