EP1805391B1 - Abwärtsführende quellbare versiegelung - Google Patents

Abwärtsführende quellbare versiegelung Download PDF

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Publication number
EP1805391B1
EP1805391B1 EP05801488A EP05801488A EP1805391B1 EP 1805391 B1 EP1805391 B1 EP 1805391B1 EP 05801488 A EP05801488 A EP 05801488A EP 05801488 A EP05801488 A EP 05801488A EP 1805391 B1 EP1805391 B1 EP 1805391B1
Authority
EP
European Patent Office
Prior art keywords
seal
rubber
swelleable
tubular element
wellbore
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.)
Active
Application number
EP05801488A
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English (en)
French (fr)
Other versions
EP1805391A1 (de
Inventor
Matheus Norbertus Baaijens
Erik Kerst Cornelissen
Derk Lucas Klompsma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Internationale Research Maatschappij BV
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Shell Internationale Research Maatschappij BV
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Priority to EP05801488A priority Critical patent/EP1805391B1/de
Publication of EP1805391A1 publication Critical patent/EP1805391A1/de
Application granted granted Critical
Publication of EP1805391B1 publication Critical patent/EP1805391B1/de
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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

Definitions

  • the present invention relates to a method of operating a wellbore formed in an earth formation, the wellbore being 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 production tubing can be provided with one or more devices, such as surface-controlled subsurface safety valves, tubing hangers, landing nipples, packers and sliding side-doors. Some of these devices are retrievable and are sealingly installed in the string.
  • the production tubing string is assembled from a plurality of tubular sections, whereby one or more landing nipples are incorporated in the string at each location in the string where such retrievable device is to be installed.
  • each landing nipple corresponds to the dimensions of a respective one of the retrievable devices. Sealing of the retrievable device to the inner surface of the landing nipple is achieved by suitable seal elements, such as chevron type seals. In order to achieve adequate sealing, the seal surface portions of the landing nipples are often polished so as to provide a very smooth seal surface.
  • a seal assembly of a production tubing is formed by the lower end part of the production tubing and is received in a polished bore receptacle (PBR) of a production packer arranged near the producing zone of the wellbore.
  • the seal assembly is axially movable relative to the PBR to allow for thermal expansion/contraction of the production tubing.
  • Tubular elements like production tubings and PBR's, are also used to convey equipment for conducting downhole operations.
  • the downhole equipment can be lowered on a wireline through the production tubing or through the PBR.
  • Such operation involves movement of the wireline (which can be of several kilometres length) at high speed through the production tubing or PBR whereby the wireline scratches along the polished seal surfaces.
  • the seal surfaces may become damaged so that adequate sealing of the device in the tubular element can no longer be guaranteed. In many instances such situation leads to serious limitations in operating the well, and may even compromise the safety of the well.
  • US 2004/194971 A1 discloses a wellbore device arranged in a tubular element, the wellbore device being provided at the outer surface thereof with a swellable seal susceptible of swelling upon contact with a selected fluid.
  • US 2004/118572 A1 discloses a wellbore device provided at the outer surface thereof with a swellable seal susceptible of swelling upon contact with a selected fluid.
  • US-A-3385367 discloses a wellbore device arranged in a tubular element, the wellbore device being provided at the outer surface thereof with a swellable seal susceptible of swelling upon contact with a selected fluid.
  • a method of operating a wellbore formed in an earth formation the wellbore being 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, the method comprising:
  • the invention also relates to a system according to claim 13.
  • the tubular element is a production tubing for transporting hydrocarbon fluid produced from the earth formation to surface, or a part thereof such as a landing nipple for the wellbore device.
  • the wellbore device is, for example, a safety valve assembly for selectively controlling flow of hydrocarbon fluid through the production tubing.
  • tubular element is a polished bore receptacle (PBR)
  • wellbore device is a seal assembly of a production tubing for transporting hydrocarbon fluid produced from the earth formation, to surface.
  • the swelleable seal swells upon contact with hydrocarbon fluid, and includes a material selected from natural rubber, nitrile rubber, hydrogenated nitrile rubber, acrylate butadiene rubber, poly acrylate rubber, butyl rubber, brominated butyl rubber, chlorinated butyl rubber, chlorinated polyethylene, neoprene rubber, styrene butadiene copolymer rubber, sulphonated polyethylene, ethylene acrylate rubber, epichlorohydrin ethylene oxide copolymer, ethylene-propylene-copolymer (peroxide crosslinked), ethylene-propylene-copolymer (sulphur crosslinked), ethylene-propylene-diene terpolymer rubber, ethylene vinyl acetate copolymer, fluoro rubbers, fluoro silicone rubber, and silicone rubbers.
  • natural rubber nitrile rubber, hydrogenated nitrile rubber, acrylate butadiene rubber, poly acrylate rubber, butyl
  • Said material is suitably selected from EP(D)M rubber (ethylene-propylene-copolymer, either peroxide or sulphur crosslinked), EPT rubber (ethylene-propylene-diene terpolymer rubber), butyl rubber, brominated butyl rubber, chlorinated butyl rubber, and chlorinated polyethylene.
  • EP(D)M rubber ethylene-propylene-copolymer, either peroxide or sulphur crosslinked
  • EPT rubber ethylene-propylene-diene terpolymer rubber
  • butyl rubber brominated butyl rubber, chlorinated butyl rubber, and chlorinated polyethylene.
  • the swelleable seal suitably swells upon contact with water, and includes a material selected from NBR, HNBR, XNBR, FKM, FFKM, TFE/P or EPDM base rubber.
  • said material suitably is a matrix material wherein a compound soluble in water is incorporated in the matrix material in a manner that the matrix material substantially prevents or restricts migration of the compound out of the swelleable seal and allows migration of water into the swelleable seal by osmosis so as to induce swelling of the swelleable seal upon migration of said water into the swelleable seal.
  • Said compound suitably comprises a salt, for example at least 20 weight% salt based on the combined weight of the matrix material and the salt, preferably at least 35 weight% salt based on the combined weight of the matrix material and the salt.
  • the matrix material is substantially impermeable to said compound or to ions of said compound.
  • the compound can be present in the matrix material, for example, in the form of a plurality of compound particles dispersed in the matrix material.
  • a surface-controlled subsurface safety valve assembly 1 (hereinafter: safety valve assembly 1) for selectively controlling flow of fluid through a wellbore (not shown) for the production of hydrocarbon fluid.
  • the safety valve assembly 1 includes a tubular conduit 2 having a passage 4 for produced hydrocarbon fluid, the passage 4 being provided with valve 6 for selectively closing the passage 4.
  • the valve 6 is controlled by a hydraulic control system of which only hydraulic control lines 8, 9 and plunger system 10 are schematically shown.
  • the hydraulic lines 8, 9 are in fluid communication with the exterior of the safety valve assembly 1 via a port 11 provided in the wall of the tubular conduit 2.
  • a locking mandrel 12 is provided at an upper portion of the safety valve assembly 1 for supporting and locking the safety valve assembly 1 in a production tubing referred to hereinafter.
  • the safety valve assembly 1 is provided with two annular seals 14, 16 arranged at an axial distance from each other, whereby the port 11 is located between the annular seals 14, 16.
  • Each annular seal 14, 16 includes a plurality of chevron type seals 18 and a swelleable seal 20 made of EPDM rubber which is susceptible of swelling upon contact with hydraulic oil to be used in the hydraulic control system for controlling the valve 6.
  • the inner diameter of the landing nipple 22 is slightly larger than the outer diameter of the safety valve assembly 1 so as to allow axial movement of the safety valve assembly 1 through the landing nipple 22.
  • the landing nipple 22 is internally provided with a locking profile 24 which is complementary to, and cooperates with, the profile of the locking mandrel 12 so as to allow the safety valve assembly 1 to be supported and locked in the landing nipple 22.
  • the inner surface of the landing nipple 22 is provided with two polished annular surface portions 26, 28 of slightly smaller diameter than the remainder of the inner surface of the landing nipple 22.
  • the polished surface portions 26, 28 are arranged such that annular seal 14 is located opposite polished surface portion 26, and annular seal 16 is located opposite polished surface portion 28 when the safety valve assembly 1 is locked in the landing nipple 22 by the cooperating locking mandrel 12 and locking profile 24.
  • a port 30 is provided in the wall of the landing nipple 22 at a location between the polished surface portions 26, 28, the port 30 being in fluid communication with a hydraulic control unit (not shown) at surface via a hydraulic control line 32 extending along the outer surface of the production tubing. It is to be understood that the hydraulic control unit at surface, the control line 32, the port 30, the port 11, the hydraulic control lines 8, 9, and the plunger system 10 are all part of the hydraulic control system for controlling the valve 6.
  • the safety valve assembly 1 is arranged in the landing nipple 22 of the production tubing. Hydrocarbon fluid is produced from the earth formation surrounding the wellbore and transported to surface via the production tubing. The produced hydrocarbon fluid thereby flows through the passage 4 of the safety valve assembly 1. If it is required to shut the well in, for example in case of an emergency situation, the valve 6 is induced to close under control of the hydraulic control system operated at surface. Leakage of hydrocarbon fluid along the outside of the safety valve assembly 1 is prevented by the annular seals 14, 16 which seal against the polished surface portions 26, 28 of the production tubing 22.
  • the sealing function of the annular seals 14, 16 is still guaranteed by the swelleable seals 20 which swell by virtue of contact with the hydraulic oil present in the annular chamber defined by the outer surface of the safety valve assembly 1, the inner surface of the landing nipple 22, and the annular seals 14, 16.
  • the seals 20, after swelling, extend into the irregularities formed at the damaged surface portions 26, 28 and thereby adequately seal the safety valve assembly 1 against the landing nipple 22.
  • tubular element is a production tubing or a portion thereof, such as a landing nipple.
  • Other useful applications include, for example, tubing hangers, packers, polished bore receptacles and sliding side-doors.

Landscapes

  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Sealing Material Composition (AREA)
  • Pipe Accessories (AREA)
  • Earth Drilling (AREA)
  • Gasket Seals (AREA)
  • Measurement Of Radiation (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Claims (14)

  1. Verfahren zum Betrieb eines Bohrloches, das in einer Erdformation gebildet ist, wobei das Bohrloch mit einem rohrförmigen Element versehen ist, in welchem eine Bohrlochvorrichtung (1) derart angeordnet werden soll, daß die Bohrlochvorrichtung (1) gegen die Innenfläche des rohrförmigen Elementes abgedichtet ist, wobei das Verfahren umfaßt:
    - Vorsehen einer quellfähigen Dichtung (20) an der Außenfläche der Bohrlochvorrichtung (1), die bei Kontakt mit einem vorbestimmten Fluid quillt, und Installieren der Bohrlochvorrichtung (1) in dem rohrförmigen Element; und
    - Veranlassen, daß die quellfähige Dichtung (20) infolge des Kontaktes mit der quellfähigen Dichtung mit dem vorbestimmten Fluid quillt;
    wobei das rohrförmige Element ein Förderrohr für den Transport von Kohlenwasserstofffluid ist, das aus der Erdformation zur Oberfläche gefördert wird, dadurch gekennzeichnet, daß das Verfahren ferner umfaßt:
    - Hindurchführen eines langgestreckten Elementes durch das rohrförmige Element zum Ausführen einer Bohrlochoperation;
    - Entfernen des langgestreckten Elementes aus dem rohrförmigen Element;
    wobei das rohrförmige Element einen Landestutzen (22) zur Aufnahme der Bohrlochvorrichtung (1) aufweist, und wobei der Schritt des Installierens der Bohrlochvorrichtung in dem rohrförmigen Element das Installieren der Bohrlochvorrichtung in dem Landestutzen (22) umfaßt.
  2. Verfahren nach Anspruch 1, bei welchem die Bohrlochvorrichtung eine Sicherheitsventilanordnung (1) für das selektive Steuern eines Stromes von Kohlenwasserstofffluid durch das Förderrohr ist.
  3. Verfahren nach Anspruch 1, bei welchem das rohrförmige Element eine polierte Bohrungsaufnahme (PBR) ist, und die Bohrlochvorrichtung (1) eine Dichtungsanordnung eines Förderrohres für den Transport von Kohlenwasserstofffluid ist, das aus der Erdformation zur Oberfläche gefördert wird.
  4. Verfahren nach einem der Ansprüche 1-3, bei welchem das vorbestimmte Fluid ein Kohlenwasserstofffluid ist, und bei welchem die quellfähige Dichtung ein Material aufweist, das aus Naturgummi, Nitrilgummi, hydriertem Nitrilgummi, Acrylat-Butadien-Gummi, Poylacrylat-Gummi, Butylgummi, bromiertem Butylgummi, chloriertem Butylgummi, chloriertem Polyethylen, Neopren-Gummi, Styren-Butadien-Copolymer- Gummi, sulfoniertem Polyethylen, Ethylen-Acrylat-Gummi, Epi-chlorhydrin-Ethylenoxid-Copolymer, Ethylen-Propylen-Copolymer (peroxidvernetzt), Ethylen-Propylen-Copolymer (schwefelvernetzt), Ethylen-Propylen-Dienterpolymergummi, Ethylen-Vinyl-Acetat-Copolymer, Fluorgummi, Fluorsilikongummi und Silikongummis gewählt ist.
  5. Verfahren nach Anspruch 4, bei welchem das Material aus EP(D)M-Gummi (Ethylen-Propylen-Copolymer, entweder peroxid- oder schwefelvernetzt), EPT-Gummi (Ethylen-Propylen-Dienterpolymergummi), Butylgummi, bromiertem Butylgummi, chloriertem Butylgummi und chloriertem Polyethylen gewählt ist.
  6. Verfahren nach einem der Ansprüche 1-3, bei welchem das vorbestimmte Fluid Wasser ist, und bei welchem die quellfähige Dichtung ein Material aufweist, das aus NBR-, HNBR-, XNBR-, FKM-, FFKM-, TFE/P- oder EPDM-Basisgummi gewählt ist.
  7. Verfahren nach Anspruch 6, bei welchem das Material ein Matrixmaterial ist, und bei welchem eine Verbindung, die im Wasser lösbar ist, in dem Matrixmaterial eingebaut ist, derart, daß das Matrixmaterial im wesentlichen die Migration der Verbindung aus der quellfähigen Dichtung verhindert oder beschränkt, und die Migration von Wasser in die quellfähige Dichtung durch Osmose gestattet, um das Quellen der quellfähigen Dichtung (20) bei der Migration des Wassers in die quellfähige Dichtung (20) zu veranlassen.
  8. Verfahren nach Anspruch 7, bei welchem die Verbindung ein Salz aufweist.
  9. Verfahren nach Anspruch 8, bei welchem die quellfähige Dichtung (20) zumindest 20 Gew.-% Salz, basierend auf dem kombinierten Gewicht des Matrixmaterials und des Salzes, vorzugsweise zumindest 35 Gew.-% Salz, basierend auf dem kombinierten Gewicht des Matrixmaterials und des Salzes, aufweist.
  10. Verfahren nach einem der Ansprüche 7-9, bei welchem das Matrixmaterial im wesentlichen undurchlässig für die Verbindung oder für Ionen der Verbindung ist.
  11. Verfahren nach einem der Ansprüche 7-10, bei welchem die Verbindung in dem Matrixmaterial in Form einer Vielzahl von Verbindungspartikeln vorhanden ist, die in dem Matrixmaterial dispergiert sind.
  12. Verfahren nach einem der Ansprüche 1-3, bei welchem das vorbestimmte Fluid ein Hydraulikfluid ist, und die Bohrlochvorrichtung (1) durch ein hydraulisches Steuersystem (8, 9, 11, 32) gesteuert ist, betätigt durch einen Strom des Hydraulikfluids, der in Kontakt mit der quellfähigen Dichtung (20) steht, und bei welchem der Schritt des Induzierens der quellfähigen Dichtung (20) zum Quellen die Zufuhr des Stromes von Hydraulikfluid zu dem hydraulischen Steuersystem (8, 9, 11, 32) umfaßt.
  13. Ein System, umfassend ein Bohrloch, das in einer Erdformation gebildet ist, wobei das Bohrloch mit einem rohrförmigen Element versehen ist, und eine Bohrlochvorrichtung (1), die in dem rohrförmigen Element derart angeordnet ist, daß die Bohrlochvorrichtung gegen die Innenfläche des rohrförmigen Elementes abgedichtet ist, wobei die Bohrlochvorrichtung (1) an ihrer Außenfläche mit einer quellfähigen Dichtung (20) versehen ist, die bei Kontakt mit einem vorbestimmten Fluid befähigt ist, zu quellen, wobei das rohrförmige Element ein Förderrohr für den Transport von Kohlenwasserstofffluid ist, das aus der Erdformation zur Oberfläche gefördert wird, dadurch gekennzeichnet, daß das rohrförmige Element einen Landestutzen (22) zur Aufnahme der Bohrlochvorrichtung (1) umfaßt, und daß die Bohrlochvorrichtung (1) in dem Landestutzen (22) installiert wird.
  14. Bohrlochvorrichtung nach Anspruch 13, bei welcher der Landestutzen (22) eine beschädigte Innenfläche hat, und wobei die quellfähige Dichtung (20) infolge Kontaktes mit dem vorbestimmten Fluid quillt, um die Bohrlochvorrichtung (1) gegen die Innenfläche des Landestutzens (22) abzudichten
EP05801488A 2004-10-27 2005-10-25 Abwärtsführende quellbare versiegelung Active EP1805391B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05801488A EP1805391B1 (de) 2004-10-27 2005-10-25 Abwärtsführende quellbare versiegelung

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04256636 2004-10-27
EP05801488A EP1805391B1 (de) 2004-10-27 2005-10-25 Abwärtsführende quellbare versiegelung
PCT/EP2005/055526 WO2006045794A1 (en) 2004-10-27 2005-10-25 Sealing of a wellbore device in a tubular element

Publications (2)

Publication Number Publication Date
EP1805391A1 EP1805391A1 (de) 2007-07-11
EP1805391B1 true EP1805391B1 (de) 2008-12-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05801488A Active EP1805391B1 (de) 2004-10-27 2005-10-25 Abwärtsführende quellbare versiegelung

Country Status (11)

Country Link
US (1) US20070257441A1 (de)
EP (1) EP1805391B1 (de)
CN (1) CN101044294A (de)
AU (1) AU2005298687C1 (de)
BR (1) BRPI0517508B1 (de)
CA (1) CA2580376C (de)
DE (1) DE602005011469D1 (de)
EA (1) EA011131B1 (de)
MY (1) MY140262A (de)
NO (1) NO337536B1 (de)
WO (1) WO2006045794A1 (de)

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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 (zh) * 2010-09-24 2012-12-26 天津鹏翎胶管股份有限公司 曲轴箱通风橡胶管及加工方法
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
CN103642164A (zh) * 2013-11-12 2014-03-19 铜陵市肆得科技有限责任公司 一种密封性耐磨性良好的橡胶密封垫材料及其制备方法
US11174700B2 (en) * 2017-11-13 2021-11-16 Halliburton Energy Services, Inc. Swellable metal for non-elastomeric O-rings, seal stacks, and gaskets
CA3093406A1 (en) * 2018-03-09 2019-10-10 Greene, Tweed Technologies, Inc. Fire-resistant seal assemblies
MX2022007385A (es) * 2020-01-24 2022-07-13 Halliburton Energy Services Inc Elementos regulares de alto rendimiento y de gran expansion para aplicaciones de petroleo y gas.
RU2730158C1 (ru) * 2020-04-22 2020-08-19 Публичное акционерное общество «Татнефть» имени В.Д. Шашина Способ ремонта эксплуатационной колонны добывающей скважины
AU2021448382A1 (en) * 2021-05-29 2023-09-28 Halliburton Energy Services, Inc. Self activating seal assembly backup

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Also Published As

Publication number Publication date
WO2006045794A1 (en) 2006-05-04
EP1805391A1 (de) 2007-07-11
CN101044294A (zh) 2007-09-26
DE602005011469D1 (de) 2009-01-15
AU2005298687B2 (en) 2010-05-27
AU2005298687C1 (en) 2010-11-25
AU2005298687A1 (en) 2006-05-04
EA200700948A1 (ru) 2007-10-26
EA011131B1 (ru) 2008-12-30
CA2580376C (en) 2013-07-02
BRPI0517508A (pt) 2008-10-14
BRPI0517508B1 (pt) 2016-11-22
NO337536B1 (no) 2016-05-02
MY140262A (en) 2009-12-31
US20070257441A1 (en) 2007-11-08
NO20072697L (no) 2007-07-05
CA2580376A1 (en) 2006-05-04

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