CN101044294A - Downhole swellable seal - Google Patents
Downhole swellable seal Download PDFInfo
- Publication number
- CN101044294A CN101044294A CNA2005800356246A CN200580035624A CN101044294A CN 101044294 A CN101044294 A CN 101044294A CN A2005800356246 A CNA2005800356246 A CN A2005800356246A CN 200580035624 A CN200580035624 A CN 200580035624A CN 101044294 A CN101044294 A CN 101044294A
- Authority
- CN
- China
- Prior art keywords
- tube element
- rubber
- wellbore
- wellbore apparatus
- expandable seal
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
A method of operating a wellbore formed in an earth formation is disclosed. The wellbore is provided with a tubular element in which a wellbore device is to be arranged such that the wellbore device is sealed to the inner surface of the tubular element, and whereby an elongate member is to be extended through the tubular element for carrying out a wellbore operation. The method comprises extending the elongate member through the tubular element so as to carry out said wellbore operation, removing the elongate member from the tubular element, providing the wellbore device at the outer surface thereof with a swelleable seal susceptible of swelling upon contact with a selected fluid, and installing the wellbore device in the tubular element, and inducing the swelleable seal to swell by virtue of contact of the swelleable seal with the selected fluid.
Description
Technical field
The present invention relates to the pit shaft (wellbore) that is formed at the stratum is carried out method of operating, described pit shaft is equipped with tube element, wellbore apparatus will be arranged to wellbore apparatus and tube element in this tube element inner surface sealing contact, thus elongated member with the described tube element of extend past so that the execution wellbore operations.
Background technology
From pit shaft exploration of hydrocarbons fluid the time, general convention is, the hydrocarbon fluid of exploiting out flows to ground via the conduit that is referred to as production tube from the productive zone of drilling well bottom.This production tube can be equipped with one or more devices, and for example ground control subsurface safety, boll-weevil hanger, seat are put pipe nipple (landing nipple), packer and sliding side-door.In these devices some are callable and are installed in the tubing string hermetically.Tubing string is assembled by a plurality of tubular portions, and thus in each position of the tubing string that above-mentioned recoverable apparatus will be installed, one or more seats are put pipe nipple and are combined in the tubing string.Be arranged in the tubing string with desired depth in order to ensure each recoverable apparatus, each size of putting each self-corresponding recoverable apparatus of pipe nipple and its is consistent.The sealing that recoverable apparatus and seat are put between the pipe nipple inner surface obtains by suitable potted component, such as v-seal spare.In order to obtain sufficient sealing, the sealing surface portion that seat is put pipe nipple has carried out polishing usually, and very smooth sealing surfaces is provided thus.
The another one example that sealably is contained in the wellbore apparatus in the tube element is the black box of production tube.The sealing assembly is formed by the end portion of production tube, and is accommodated in the polished hore receptacle (PBR) that is arranged near the production packer of pit shaft productive zone.The sealing assembly can axially move with respect to PBR, allows the thermal expansion of production tube thus.
In addition, the same with production tube and PBR, tube element is used to transmit the device of carrying out downhole operations (downhole operation).For example, when wire rope (wireline) transmitted operation, downhole hardware can descend on wire rope through production tube or PBR.This generic operation relates to wire rope (it have thousands of rice long) at a high speed through the moving of production tube or PBR, thus the wire rope sealing surfaces of polishing of can swiping.Consequently, the sealing surfaces damage that becomes, so that the abundant sealing of installing in the tube element no longer is guaranteed.In many cases, this situation causes the serious restriction to drill-well operation, even may jeopardize the safety of drilling well.For the concrete condition of the sealing surfaces of surperficial control type subsurface safety, the damage of its sealing surfaces may mean that drilling well need close.This situation frequently takes place, because safety valve is being pulled out with during allowing maximum sized instrument to drop to drilling well input in the drilling well, the sealing surfaces that emergency valve seat is put pipe nipple often can not get protection.
Therefore, need provide a kind of to the improving one's methods of wellbore operations, this method can overcome above-mentioned defective.
Summary of the invention
According to the present invention, provide a kind of the pit shaft that is formed at the stratum has been carried out method of operating, described pit shaft is equipped with tube element, wellbore apparatus will be arranged to wellbore apparatus and contact with the inner surface sealing of tube element in this tube element, elongated member will extend through described tube element so that carry out wellbore operations thus, and described method comprises:
With elongated member extend past tube element, thereby carry out described wellbore operations;
Elongated member is removed from tube element;
External surface at wellbore apparatus is provided with the expandable seal that can expand when fluid is selected in contact, and this wellbore apparatus is installed in the tube element; And
By expandable seal is contacted with selecting fluid, impel expandable seal to expand.
What can obtain thus is, expands when fluid is selected in contact by means of expandable seal, causes the sealing surfaces place that is damaged at tube element owing to carry out wellbore operations through it, and above-mentioned seal expansion becomes irregular shape.
The invention still further relates to a kind of wellbore apparatus that is applied in the pit shaft that is formed at the stratum, described pit shaft is equipped with tube element, the mode that wellbore apparatus is arranged in this tube element is that wellbore apparatus contacts with the inner surface sealing of tube element, elongated member will extend through described tube element so that carry out wellbore operations thus, the external surface of above-mentioned wellbore apparatus is equipped with expandable seal, and the sealing part can expand when fluid is selected in contact.
In a preferred embodiment, described tube element is the production tube that is used for the hydrocarbon fluid from formation production is transported to ground, or its part, and the seat that for example is used for wellbore apparatus is put pipe nipple (landing nipple).In this class was used, wellbore apparatus was a relief valve assembly for example, and it is used for hydrocarbon fluid is optionally controlled through flowing of production tube.
As selection, described tube element can be polished hore receptacle (PBR), and described wellbore apparatus is the black box of production tube, and described production tube is used for the hydrocarbon fluid from formation production is transported to ground.
Preferably, described expandable seal expands during hydrocarbon fluid in contact, and comprises and be selected from following material: natural rubber, acrylonitrile-butadiene rubber, the acrylonitrile-butadiene rubber of hydrogenation, acrylate-butadiene rubber, lactoprene, butyl rubber, brombutyl, chlorinated scoline, haloflex, neoprene, SB rubber, the polyethylene of sulfonation, ethylene-acrylate rubber, the chloropropylene oxide ethylene oxide copolymer, the ethylene-propylene copolymer of peroxide crosslinking, sulfur-crosslinked ethylene-propylene copolymer, ethylene-propylene-diene terpolymer rubber, EVAc, fluorubber, flurosilicone rubber and silicon rubber.
Above-mentioned material suitably is selected from following: EP (D) M rubber (peroxide crosslinking or sulfur-crosslinked ethylene-propylene copolymer), EPT rubber (ethylene-propylene-diene terpolymer rubber), butyl rubber, brombutyl, chlorinated scoline and ethlyene dichloride.
As the replacement of the expandable seal that expands during hydrocarbon fluid in contact or replenish, expandable seal also is suitable for expanding when contacting with water, and comprises and be selected from following material: acrylonitrile-butadiene rubber, hydrogenated nitrile-butadiene rubber, XNBR, Viton, FFKM, TPE/P rubber or Ethylene Propylene Terpolymer base rubber (EPDM).Even be in expansion character under the salt water state in order to improve inflatable element, it is matrix material that above-mentioned material is fit to, wherein water-soluble compound is combined in the matrix material in the following manner: matrix material prevents from or limits compound to move apart expandable seal and allow water to penetrate into expandable seal substantially, impels inflatable element to expand thus when water enters expandable seal.Described compound is fit to comprise salt, for example accounts for the salt of at least 20% percentage by weight of the gross weight of matrix material and salt, preferably accounts for the salt of gross weight at least 35% percentage by weight of matrix material and salt.Leach matrix material in order to prevent or to reduce compound, the preferred substrate material is impermeable substantially for described compound or its ion.Described compound for example exists in the described matrix material with the form that is dispersed in a plurality of compound particles in the matrix material.
Description of drawings
With reference to accompanying drawing, will the present invention be described in more detail by example below, in the accompanying drawings:
Fig. 1 has schematically shown the embodiment according to wellbore apparatus of the present invention;
Fig. 2 has schematically shown the details A of wellbore apparatus among Fig. 1;
Fig. 3 has schematically shown the longitudinal profile of tube element, and this tube element is used for combining with the wellbore apparatus of Fig. 1;
Fig. 4 has shown that schematically the wellbore apparatus of Fig. 1 is arranged in the situation in the tube element of Fig. 3.
In above-mentioned accompanying drawing, identical Reference numeral is represented identical parts.
The specific embodiment
Referring to Fig. 1, shown ground control subsurface safety assembly 1 (below be referred to as relief valve assembly 1), it optionally controls fluid flowing in the pit shaft (not shown) that is used for the exploration of hydrocarbons fluid.Relief valve assembly 1 comprises tubular conduit 2, and this tubular conduit 2 has the passage 4 that is used for the hydrocarbon fluid exploited, and passage 4 is equipped with the valve 6 that is used for selectivity close passage 4.Valve 6 is controlled by hydraulic control system, only schematically shows the hydraulic control pipe 8,9 and the plunger system 10 of hydraulic control system here.Hydraulic control pipe 8,9 is communicated with by the external fluid of the hole on the wall that is located at tubular conduit 2 11 with relief valve assembly 1.On the top of relief valve assembly 1, be provided with lock mandrel 12, it is used for relief valve assembly 1 supporting and is locked in the production tube of hereinafter mentioning.
Further referring to Fig. 2, relief valve assembly 1 is equipped with two annular seals 14,16 of layout axially spaced apart from each other, and hole 11 is set between the annular seal 14,16 thus.The expandable seal 20 that each annular seal 14,16 includes a plurality of v-seal spares 18 and made by ethylene propylene diene rubber (EPDM), this EPDM rubber can expand during used hydraulic oil in contact hydraulic control system that valve 6 is controlled.
Further referring to Fig. 3, shown that being seat puts the tube element of pipe nipple 22 forms, it is combined in the production tube (not shown) that is used for the hydrocarbon fluid by the pit shaft exploitation is transported to ground.The internal diameter that seat is put pipe nipple 22 allows relief valve assembly 1 to pass seat thus and puts moving axially of pipe nipple 22 slightly greater than the external diameter of relief valve assembly 1.The inside that seat is put pipe nipple 22 is equipped with locking face 24, and this locking face 24 is complementary with the profile of lock mandrel 12 and cooperate, allows relief valve assembly 1 supporting thus and lock to be present to put in the pipe nipple 22.In addition, the inner surface that seat is put pipe nipple 22 is equipped with two annular surface parts 26,28 of polishing, and their diameter is slightly put all the other inner surfaces of pipe nipple 22 less than seat.Polished surface part 26,28 is arranged to: when by lock mandrel 12 is cooperated mutually with locking face 24, make relief valve assembly 1 locking be present when putting in the pipe nipple 22, annular seal 14 is relative with polished surface part 26, and annular seal 16 is relative with polished surface part 28.
Be in the position between the polished surface part 26,28 on the present wall of putting pipe nipple 22, be provided with hole 30, this hole 30 is communicated with on the ground hydraulic control unit (not shown) fluid by the hydraulic control pipe 32 that extends along the production tube external surface.Should be appreciated that above-mentioned ground hydraulic control module, control valve 32, hole 30, hole 11, hydraulic control pipe 8 and 9, and plunger system 10 all is the parts that are used for the hydraulic control system of control valve 6.
Further referring to Fig. 4, between the normal operating period, the seat that relief valve assembly 1 is disposed in production tube is put in the pipe nipple 22.The formation production of hydrocarbon fluid around the pit shaft come out and is transported to ground by production tube.Thus, the hydrocarbon fluid of the being exploited passage 4 of relief valve assembly 1 of flowing through.Close drilling well when emergency (for example when take place) if desired, under the control of the hydraulic control system of ground control, valve 6 quilts are caused closing.Owing to annular seal 14,16 is avoided, these sealing devices seal the polished surface part 26,28 of production tube 22 to hydrocarbon fluid along the leakage in relief valve assembly 1 outside.
After continuous exploration of hydrocarbons fluid a period of time from pit shaft, may need to suspend pit shaft and relief valve assembly 1 is removed from production tube, implement the down-hole maintenance operation so that utilize from the wire rope (not shown) of ground extend past production tube.During this class maintenance operation, the wire rope high-speed mobile is through production tube, and therefore the process seat is put pipe nipple 22.The wire rope outstanding polished surface part 26,28 that seat is put pipe nipple 22 of can swiping thus.Consequently, polished surface part 26,28 damage that is easy to become, so that after relief valve assembly 1 was reinstalled seat and puts in the pipe nipple 22, the v-seal spare 18 of annular seal 14,16 no longer sealed fully to these surface portions.Yet, the sealing function of annular seal 14,16 still is guaranteed owing to expandable seal 20, this expandable seal by means of be present in doughnut in hydraulic oil contact and expand, described doughnut is limited by the external surface of relief valve assembly 1, inner surface and 14,16 of the annular seals that seat is put pipe nipple 22.Like this, seal 20 is extending to after the expansion in the irregular portion that surface portion 26,28 places that damaging form, and thus relief valve assembly 1 is put pipe nipple 22 with respect to seat and seal fully.
Should be appreciated that the present invention is not limited to the application that tube element is production tube or its part (for example, seat is put pipe nipple).Other favourable application for example comprise: boll-weevil hanger, packer, polished hore receptacle and sliding side-door.
Claims (18)
1. one kind is carried out method of operating to the pit shaft that is formed in the stratum, described pit shaft is equipped with tube element, wellbore apparatus will be arranged to wellbore apparatus and contact with the inner surface sealing of tube element in this tube element, elongated member will extend through described tube element so that carry out wellbore operations thus, and described method comprises:
With the described tube element of described elongated member extend past, thereby carry out described wellbore operations;
Described elongated member is removed from described tube element;
External surface at described wellbore apparatus is provided with the expandable seal that can expand when fluid is selected in contact, and described wellbore apparatus is installed in the described tube element; And
By described expandable seal is contacted with described selection fluid, impel described expandable seal to expand.
2. the method for claim 1, wherein said tube element is a production tube, it is used for the hydrocarbon fluid from formation production is transported to ground.
3. method as claimed in claim 2, wherein said tube element comprise that the seat that is used to hold described wellbore apparatus puts pipe nipple, and the above-mentioned step that wellbore apparatus is installed in the tube element comprises that described wellbore apparatus is installed in described seat to be put in the pipe nipple.
4. method as claimed in claim 3, wherein said wellbore apparatus is a relief valve assembly, it is used for hydrocarbon fluid is optionally controlled through flowing of described production tube.
5. the method for claim 1, wherein said tube element is a polished hore receptacle, and described wellbore apparatus is the black box of production tube, described production tube is used for the hydrocarbon fluid from formation production is transported to ground.
6. as any one described method among the claim 1-5, wherein said selection fluid is a hydrocarbon fluid, and described expandable seal comprises and is selected from following material: natural rubber, acrylonitrile-butadiene rubber, the acrylonitrile-butadiene rubber of hydrogenation, acrylate-butadiene rubber, lactoprene, butyl rubber, brombutyl, chlorinated scoline, haloflex, neoprene, SB rubber, the polyethylene of sulfonation, ethylene-acrylate rubber, the chloropropylene oxide ethylene oxide copolymer, the ethylene-propylene copolymer of peroxide crosslinking, sulfur-crosslinked ethylene-propylene copolymer, ethylene-propylene-diene terpolymer rubber, EVAc, fluorubber, flurosilicone rubber and silicon rubber.
7. method as claimed in claim 6, wherein said material is selected from following: EP (D) M rubber (peroxide crosslinking or sulfur-crosslinked ethylene-propylene copolymer), EPT rubber (ethylene-propylene-diene terpolymer rubber), butyl rubber, brombutyl, chlorinated scoline and ethlyene dichloride.
8. as any one described method of claim 1-5, wherein said selection fluid is a water, and described expandable seal comprises and is selected from following material: acrylonitrile-butadiene rubber, hydrogenated nitrile-butadiene rubber, XNBR, Viton, FFKM, TPE/P rubber or Ethylene Propylene Terpolymer base rubber.
9. method as claimed in claim 8, wherein said material is a matrix material, and wherein water-soluble compound is combined in the matrix material in the following manner: matrix material prevents from or limits compound to move apart expandable seal and allow water to penetrate in the expandable seal substantially, impels described inflatable element to expand thus when water enters expandable seal.
10. method as claimed in claim 9, wherein said compound comprises salt.
11. method as claimed in claim 10, wherein said expandable seal comprise the salt of gross weight at least 20% percentage by weight that accounts for described matrix material and salt, preferably comprise the salt of gross weight at least 35% percentage by weight that accounts for described matrix material and salt.
12. as any one described method of claim 9-11, wherein said matrix material is impermeable substantially for described compound or its ion.
13. as any one described method of claim 9-12, wherein said compound is present in the described matrix material with the form that is dispersed in a plurality of compound particles in the matrix material.
14. as any one described method of claim 1-5, wherein said selection fluid is a hydraulic oil, and described wellbore apparatus is controlled by hydraulic control system, this hydraulic control system is by controlling with contacted one the described hydraulic oil of described expandable seal, and the step of wherein impelling inflatable element to expand comprises one hydraulic oil is supplied to described hydraulic control system.
15. wellbore apparatus that is applied in the pit shaft that is formed at the stratum, described pit shaft is equipped with tube element, the mode that wellbore apparatus is arranged in this tube element is that wellbore apparatus contacts with the inner surface sealing of tube element, elongated member will extend through described tube element so that carry out wellbore operations thus, the external surface of described wellbore apparatus is equipped with expandable seal, and the sealing part can expand when fluid is selected in contact.
16. wellbore apparatus as claimed in claim 15, wherein said wellbore apparatus is disposed in the described tube element, the inner surface of described tube element is owing to the wellbore operations that the execution elongated member extends through tube element is damaged, and wherein said inflatable element is sealed in described wellbore apparatus the inner surface of described tube element thus owing to the described selection fluid of contact expands.
17. one kind with reference to accompanying drawing method as indicated above basically.
18. one kind with reference to accompanying drawing wellbore apparatus as indicated above basically.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04256636 | 2004-10-27 | ||
| EP04256636.4 | 2004-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101044294A true CN101044294A (en) | 2007-09-26 |
Family
ID=34930755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800356246A Pending CN101044294A (en) | 2004-10-27 | 2005-10-25 | Downhole swellable seal |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20070257441A1 (en) |
| EP (1) | EP1805391B1 (en) |
| CN (1) | CN101044294A (en) |
| AU (1) | AU2005298687C1 (en) |
| BR (1) | BRPI0517508B1 (en) |
| CA (1) | CA2580376C (en) |
| DE (1) | DE602005011469D1 (en) |
| EA (1) | EA011131B1 (en) |
| MY (1) | MY140262A (en) |
| NO (1) | NO337536B1 (en) |
| WO (1) | WO2006045794A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642164A (en) * | 2013-11-12 | 2014-03-19 | 铜陵市肆得科技有限责任公司 | Rubber gasket material with good sealing performance and wear resistance and preparation method thereof |
| CN111094810A (en) * | 2017-11-13 | 2020-05-01 | 哈利伯顿能源服务公司 | Expandable metal for nonelastomeric O-rings, seal stacks, and gaskets |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2900682B1 (en) * | 2006-05-05 | 2008-08-08 | Weatherford France Sas Soc Par | METHOD AND TOOL FOR UNLOCKING A CONTROL LINE |
| US20090038796A1 (en) * | 2007-08-10 | 2009-02-12 | Baker Hughes Incorporated | Expandable leak path preventer in fluid activated downhole tools |
| US7931092B2 (en) | 2008-02-13 | 2011-04-26 | Stowe Woodward, L.L.C. | Packer element with recesses for downwell packing system and method of its use |
| US7994257B2 (en) | 2008-02-15 | 2011-08-09 | Stowe Woodward, Llc | Downwell system with swellable packer element and composition for same |
| US7823649B2 (en) * | 2008-04-02 | 2010-11-02 | Halliburton Energy Services, Inc. | System and method for plugging a side pocket mandrel using a swelling plug |
| US20100122819A1 (en) * | 2008-11-17 | 2010-05-20 | Baker Hughes Incorporated | Inserts with Swellable Elastomer Seals for Side Pocket Mandrels |
| CN102093623B (en) * | 2010-09-24 | 2012-12-26 | 天津鹏翎胶管股份有限公司 | Crankcase ventilation rubber hose and machining method thereof |
| US9080419B2 (en) | 2012-07-05 | 2015-07-14 | Craig H. Benson | Bentonite collars for wellbore casings |
| US9284813B2 (en) | 2013-06-10 | 2016-03-15 | Freudenberg Oil & Gas, Llc | Swellable energizers for oil and gas wells |
| JP2021515161A (en) * | 2018-03-09 | 2021-06-17 | グリーン， ツイード テクノロジーズ， インコーポレイテッド | Fireproof seal assembly |
| RU2730158C1 (en) * | 2020-04-22 | 2020-08-19 | Публичное акционерное общество «Татнефть» имени В.Д. Шашина | Repair method of production casing of producing well |
| NO20231041A1 (en) * | 2021-05-29 | 2023-09-29 | Halliburton Energy Services Inc | Self activating seal assembly backup |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2849070A (en) * | 1956-04-02 | 1958-08-26 | Union Oil Co | Well packer |
| US3385367A (en) * | 1966-12-07 | 1968-05-28 | Kollsman Paul | Sealing device for perforated well casing |
| US4193450A (en) * | 1978-11-13 | 1980-03-18 | Otis Engineering Corporation | Surface controlled subsurface safety valve |
| US4601343A (en) * | 1985-02-04 | 1986-07-22 | Mwl Tool And Supply Company | PBR with latching system for tubing |
| US7121352B2 (en) * | 1998-11-16 | 2006-10-17 | Enventure Global Technology | Isolation of subterranean zones |
| WO2002059452A1 (en) * | 2001-01-26 | 2002-08-01 | E2 Tech Limited | Device and method to seal boreholes |
| US6585053B2 (en) * | 2001-09-07 | 2003-07-01 | Weatherford/Lamb, Inc. | Method for creating a polished bore receptacle |
| US6907937B2 (en) * | 2002-12-23 | 2005-06-21 | Weatherford/Lamb, Inc. | Expandable sealing apparatus |
| OA13222A (en) * | 2003-07-29 | 2006-12-13 | Shell Int Research | System for sealing a space in a wellbore. |
| US20050109502A1 (en) * | 2003-11-20 | 2005-05-26 | Jeremy Buc Slay | Downhole seal element formed from a nanocomposite material |
| US7055607B2 (en) * | 2004-02-13 | 2006-06-06 | Weatherford/Lamb, Inc. | Seal assembly for a safety valve |
| GB2428263B (en) * | 2004-03-12 | 2008-07-30 | Schlumberger Holdings | Sealing system and method for use in a well |
-
2005
- 2005-10-25 EP EP05801488A patent/EP1805391B1/en active Active
- 2005-10-25 US US11/666,259 patent/US20070257441A1/en not_active Abandoned
- 2005-10-25 CN CNA2005800356246A patent/CN101044294A/en active Pending
- 2005-10-25 BR BRPI0517508A patent/BRPI0517508B1/en not_active IP Right Cessation
- 2005-10-25 DE DE602005011469T patent/DE602005011469D1/en active Active
- 2005-10-25 EA EA200700948A patent/EA011131B1/en not_active IP Right Cessation
- 2005-10-25 AU AU2005298687A patent/AU2005298687C1/en active Active
- 2005-10-25 CA CA2580376A patent/CA2580376C/en active Active
- 2005-10-25 WO PCT/EP2005/055526 patent/WO2006045794A1/en active Application Filing
- 2005-10-25 MY MYPI20055009A patent/MY140262A/en unknown
-
2007
- 2007-05-25 NO NO20072697A patent/NO337536B1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642164A (en) * | 2013-11-12 | 2014-03-19 | 铜陵市肆得科技有限责任公司 | Rubber gasket material with good sealing performance and wear resistance and preparation method thereof |
| CN111094810A (en) * | 2017-11-13 | 2020-05-01 | 哈利伯顿能源服务公司 | Expandable metal for nonelastomeric O-rings, seal stacks, and gaskets |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0517508A (en) | 2008-10-14 |
| CA2580376A1 (en) | 2006-05-04 |
| WO2006045794A1 (en) | 2006-05-04 |
| AU2005298687B2 (en) | 2010-05-27 |
| AU2005298687A1 (en) | 2006-05-04 |
| US20070257441A1 (en) | 2007-11-08 |
| NO337536B1 (en) | 2016-05-02 |
| EP1805391A1 (en) | 2007-07-11 |
| MY140262A (en) | 2009-12-31 |
| EA200700948A1 (en) | 2007-10-26 |
| AU2005298687C1 (en) | 2010-11-25 |
| NO20072697L (en) | 2007-07-05 |
| BRPI0517508B1 (en) | 2016-11-22 |
| EP1805391B1 (en) | 2008-12-03 |
| DE602005011469D1 (en) | 2009-01-15 |
| CA2580376C (en) | 2013-07-02 |
| EA011131B1 (en) | 2008-12-30 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070926 |