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NO20042514L - Rorekspansjon - Google Patents

Rorekspansjon

Info

Publication number
NO20042514L
NO20042514L NO20042514A NO20042514A NO20042514L NO 20042514 L NO20042514 L NO 20042514L NO 20042514 A NO20042514 A NO 20042514A NO 20042514 A NO20042514 A NO 20042514A NO 20042514 L NO20042514 L NO 20042514L
Authority
NO
Norway
Prior art keywords
pipe expansion
expansion
pipe
Prior art date
Application number
NO20042514A
Other languages
English (en)
Other versions
NO335573B1 (no
Inventor
Andrew Michael Duggan
Wayne Rudd
Paul David Metcalfe
Simon John Harrall
David John Hillis
Original Assignee
Weatherford Lamb
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB0313891A external-priority patent/GB0313891D0/en
Priority claimed from GB0326670A external-priority patent/GB0326670D0/en
Application filed by Weatherford Lamb filed Critical Weatherford Lamb
Publication of NO20042514L publication Critical patent/NO20042514L/no
Publication of NO335573B1 publication Critical patent/NO335573B1/no

Links

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
    • E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
    • E21B43/105—Expanding tools specially adapted therefor

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
NO20042514A 2003-06-16 2004-06-16 Fremgangsmåte og apparat for ekspandering av rør NO335573B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0313891A GB0313891D0 (en) 2003-06-16 2003-06-16 Tubing expansion
GB0326670A GB0326670D0 (en) 2003-11-15 2003-11-15 Tubing expansion

Publications (2)

Publication Number Publication Date
NO20042514L true NO20042514L (no) 2004-12-17
NO335573B1 NO335573B1 (no) 2014-12-29

Family

ID=32773983

Family Applications (2)

Application Number Title Priority Date Filing Date
NO20042514A NO335573B1 (no) 2003-06-16 2004-06-16 Fremgangsmåte og apparat for ekspandering av rør
NO20042515A NO335496B1 (no) 2003-06-16 2004-06-16 Fremgangsmåte og apparat for ekspandering av rør

Family Applications After (1)

Application Number Title Priority Date Filing Date
NO20042515A NO335496B1 (no) 2003-06-16 2004-06-16 Fremgangsmåte og apparat for ekspandering av rør

Country Status (4)

Country Link
US (2) US7367389B2 (no)
CA (2) CA2471051C (no)
GB (2) GB2402952B (no)
NO (2) NO335573B1 (no)

Families Citing this family (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7373990B2 (en) * 1999-12-22 2008-05-20 Weatherford/Lamb, Inc. Method and apparatus for expanding and separating tubulars in a wellbore
GB0215659D0 (en) * 2002-07-06 2002-08-14 Weatherford Lamb Formed tubulars
US20070034386A1 (en) * 2005-08-15 2007-02-15 Henry Michael W Expandable well barrier
US7726395B2 (en) * 2005-10-14 2010-06-01 Weatherford/Lamb, Inc. Expanding multiple tubular portions
GB0525410D0 (en) * 2005-12-14 2006-01-25 Weatherford Lamb Expanding Multiple Tubular Portions
NO324088B1 (no) * 2005-12-30 2007-08-13 Statoil Asa Fremgangsmate og forlengelsesror for sementering av en borebronn
US7503396B2 (en) * 2006-02-15 2009-03-17 Weatherford/Lamb Method and apparatus for expanding tubulars in a wellbore
GB0607551D0 (en) * 2006-04-18 2006-05-24 Read Well Services Ltd Apparatus and method
US8069916B2 (en) * 2007-01-03 2011-12-06 Weatherford/Lamb, Inc. System and methods for tubular expansion
US20080289812A1 (en) * 2007-04-10 2008-11-27 Schlumberger Technology Corporation System for downhole packing
CN101680282B (zh) * 2007-04-26 2014-10-15 韦尔泰克有限公司 包覆方法及膨胀工具
US7757773B2 (en) * 2007-07-25 2010-07-20 Schlumberger Technology Corporation Latch assembly for wellbore operations
US7607486B2 (en) * 2007-07-30 2009-10-27 Baker Hughes Incorporated One trip tubular expansion and recess formation apparatus and method
US7779923B2 (en) * 2007-09-11 2010-08-24 Enventure Global Technology, Llc Methods and apparatus for anchoring and expanding tubular members
US7779910B2 (en) 2008-02-07 2010-08-24 Halliburton Energy Services, Inc. Expansion cone for expandable liner hanger
EP2119867B1 (en) * 2008-04-23 2014-08-06 Weatherford/Lamb Inc. Monobore construction with dual expanders
US20100032167A1 (en) * 2008-08-08 2010-02-11 Adam Mark K Method for Making Wellbore that Maintains a Minimum Drift
US20110253394A1 (en) * 2008-11-18 2011-10-20 Mark Wilson Anderson Modifying expansion forces by adding compression
EP2202383A1 (en) * 2008-12-24 2010-06-30 Shell Internationale Researchmaatschappij B.V. Method of expanding a tubular element in a wellbore
WO2010072751A2 (en) * 2008-12-24 2010-07-01 Shell Internationale Research Maatschappij B.V. Expanding a tubular element in a wellbore
NO330698B1 (no) * 2009-07-06 2011-06-14 Reelwell As Et nedihulls bronnverktoy med ekspansjonsverktoy og en fremgangsmate for anvendelse derav
CA2778195A1 (en) * 2009-11-16 2011-05-19 Shell Internationale Research Maatschappij B.V. Method and system for lining a section of a wellbore with an expandable tubular element
US8695698B2 (en) * 2009-11-20 2014-04-15 Enventure Global Technology, L.L.C. Expansion system for expandable tubulars
US8261842B2 (en) 2009-12-08 2012-09-11 Halliburton Energy Services, Inc. Expandable wellbore liner system
FR2937076B1 (fr) * 2010-01-07 2011-03-11 Saltel Ind Procede de reparation d'une suspension de colonne perdue, dispositif et ebauche pour sa mise en oeuvre
US8899336B2 (en) * 2010-08-05 2014-12-02 Weatherford/Lamb, Inc. Anchor for use with expandable tubular
US8397826B2 (en) 2010-09-15 2013-03-19 Baker Hughes Incorporated Pump down liner expansion method
US20120097391A1 (en) 2010-10-22 2012-04-26 Enventure Global Technology, L.L.C. Expandable casing patch
CN102561998A (zh) * 2010-12-10 2012-07-11 淮南矿业(集团)有限责任公司 瓦斯抽采钻井及形成方法
US9850726B2 (en) 2011-04-27 2017-12-26 Weatherford Technology Holdings, Llc Expandable open-hole anchor
US8875783B2 (en) 2011-04-27 2014-11-04 Weatherford/Lamb, Inc. Expansion system for an expandable tubular assembly
US8826974B2 (en) * 2011-08-23 2014-09-09 Baker Hughes Incorporated Integrated continuous liner expansion method
US9109435B2 (en) 2011-10-20 2015-08-18 Baker Hughes Incorporated Monobore expansion system—anchored liner
GB201211716D0 (en) 2012-07-02 2012-08-15 Meta Downhole Ltd A liner tieback connection
US20140041880A1 (en) * 2012-08-07 2014-02-13 Enventure Global Technology, Llc Hybrid expansion cone
CN103696718A (zh) * 2013-12-19 2014-04-02 中国石油天然气股份有限公司 长段套损井膨胀管双卡套管分层封隔修复装置及方法
WO2015128454A1 (en) * 2014-02-27 2015-09-03 Shell Internationale Research Maatschappij B.V. Method and system for lining a tubular
CN103867155B (zh) * 2014-04-04 2016-05-25 华鼎鸿基石油工程技术(北京)有限公司 一种膨胀管
US9494020B2 (en) 2014-04-09 2016-11-15 Weatherford Technology Holdings, Llc Multiple diameter expandable straddle system
EP3230554A1 (en) * 2014-12-12 2017-10-18 Shell Internationale Research Maatschappij B.V. Expanding a tubular element in a wellbore
US10745979B2 (en) 2015-07-01 2020-08-18 Enventure Global Technology, Inc. Expandable drillable shoe
WO2017001391A1 (en) * 2015-07-01 2017-01-05 Shell Internationale Research Maatschappij B.V. Hybrid push and pull method and system for expanding well tubulars
WO2017019500A1 (en) 2015-07-24 2017-02-02 Team Oil Tools, Lp Downhole tool with an expandable sleeve
US10408012B2 (en) 2015-07-24 2019-09-10 Innovex Downhole Solutions, Inc. Downhole tool with an expandable sleeve
US10227842B2 (en) 2016-12-14 2019-03-12 Innovex Downhole Solutions, Inc. Friction-lock frac plug
US11788388B2 (en) 2017-08-10 2023-10-17 Coretrax Americas Limited Casing patch system
US11530586B2 (en) 2017-08-10 2022-12-20 Coretrax Americas Limited Casing patch system
US10837264B2 (en) * 2017-08-10 2020-11-17 Mohawk Energy Ltd. Casing patch system
US10989016B2 (en) 2018-08-30 2021-04-27 Innovex Downhole Solutions, Inc. Downhole tool with an expandable sleeve, grit material, and button inserts
US11125039B2 (en) 2018-11-09 2021-09-21 Innovex Downhole Solutions, Inc. Deformable downhole tool with dissolvable element and brittle protective layer
US11965391B2 (en) 2018-11-30 2024-04-23 Innovex Downhole Solutions, Inc. Downhole tool with sealing ring
US11396787B2 (en) 2019-02-11 2022-07-26 Innovex Downhole Solutions, Inc. Downhole tool with ball-in-place setting assembly and asymmetric sleeve
US11261683B2 (en) 2019-03-01 2022-03-01 Innovex Downhole Solutions, Inc. Downhole tool with sleeve and slip
US11203913B2 (en) 2019-03-15 2021-12-21 Innovex Downhole Solutions, Inc. Downhole tool and methods
US11286743B2 (en) 2019-12-13 2022-03-29 Coretrax Americas Ltd. Wire line deployable metal patch stackable system
US11572753B2 (en) 2020-02-18 2023-02-07 Innovex Downhole Solutions, Inc. Downhole tool with an acid pill
NO20230618A1 (en) * 2020-11-17 2023-05-31 Coretrax Americas Ltd Casing patch system
GB2615700B (en) * 2020-11-17 2024-09-18 Coretrax Americas Ltd Casing patch system
US11933134B2 (en) * 2021-03-23 2024-03-19 CAN Holdings, LLC Removable oil well seal
MX2023014788A (es) * 2021-06-11 2024-01-11 Enventure Global Tech Inc Sistema para sellar un tubular expandible a traves de secciones que tienen diferentes diametros.
US12091947B2 (en) * 2021-07-26 2024-09-17 Can Holdings Llc. Method for sealing fractures in a subterranean well casing
US11808108B2 (en) 2021-08-17 2023-11-07 Weatherford Technology Holdings, Llc Dual position isolator seal
US12352138B2 (en) * 2023-07-19 2025-07-08 Halliburton Energy Services, Inc. Expansion tool with a hybrid cone for expansion of an expandable liner hanger in a wellbore

Family Cites Families (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203451A (en) * 1962-08-09 1965-08-31 Pan American Petroleum Corp Corrugated tube for lining wells
US3203483A (en) * 1962-08-09 1965-08-31 Pan American Petroleum Corp Apparatus for forming metallic casing liner
US3191677A (en) * 1963-04-29 1965-06-29 Myron M Kinley Method and apparatus for setting liners in tubing
US3353599A (en) * 1964-08-04 1967-11-21 Gulf Oil Corp Method and apparatus for stabilizing formations
US3776307A (en) * 1972-08-24 1973-12-04 Gearhart Owen Industries Apparatus for setting a large bore packer in a well
DE2654102C2 (de) * 1976-11-29 1984-01-05 Rothenberger GmbH & Co Werkzeuge-Maschinen KG, 6000 Frankfurt Expansionskopf für Rohraufweitegeräte mit auswechselbaren Expansionsbacken
SU1745873A1 (ru) * 1986-01-06 1992-07-07 Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам Гидромеханическа дорнирующа головка дл расширени гофрированного пластыр в обсадочной колонне
US4836940A (en) * 1987-09-14 1989-06-06 American Colloid Company Composition and method of controlling lost circulation from wellbores
SU1679030A1 (ru) 1988-01-21 1991-09-23 Татарский Государственный Научно-Исследовательский И Проектный Институт Нефтяной Промышленности Способ изол ции зон осложнений в скважине профильными перекрывател ми
DE3887905D1 (de) * 1988-11-22 1994-03-24 Tatarskij Gni Skij I Pi Neftja Aufweitwerkzeug für rohre.
JP2703379B2 (ja) 1988-11-22 1998-01-26 タタルスキー、ゴスダルストウェンヌイ、ナウチノ‐イスレドワーチェルスキー、イ、プロエクトヌイ、インスチツート、ネフチャノイ、プロムイシュレンノスチ 坑井内の採収層のケーシング方法
EP0397874B1 (de) 1988-11-22 1997-02-05 Tatarsky Gosudarstvenny Nauchno-Issledovatelsky I Proektny Institut Neftyanoi Promyshlennosti Vorrichtung zum schliessen einer schwierigkeitszone in einem bohrloch
US5034139A (en) * 1989-06-19 1991-07-23 Nalco Chemical Company Polymer composition comprising phosphorous-containing gelling agent and process thereof
GB9522942D0 (en) * 1995-11-09 1996-01-10 Petroline Wireline Services Downhole tool
US5957195A (en) * 1996-11-14 1999-09-28 Weatherford/Lamb, Inc. Wellbore tool stroke indicator system and tubular patch
GB9723031D0 (en) * 1997-11-01 1998-01-07 Petroline Wellsystems Ltd Downhole tubing location method
US6575240B1 (en) * 1998-12-07 2003-06-10 Shell Oil Company System and method for driving pipe
US7357188B1 (en) * 1998-12-07 2008-04-15 Shell Oil Company Mono-diameter wellbore casing
CA2407983C (en) 1998-11-16 2010-01-12 Robert Lance Cook Radial expansion of tubular members
EP1147287B1 (en) * 1998-12-22 2005-08-17 Weatherford/Lamb, Inc. Procedures and equipment for profiling and jointing of pipes
GB9920935D0 (en) * 1999-09-06 1999-11-10 E2 Tech Ltd Apparatus for and a method of anchoring a first conduit to a second conduit
GC0000211A (en) 1999-11-15 2006-03-29 Shell Int Research Expanding a tubular element in a wellbore
US7275602B2 (en) * 1999-12-22 2007-10-02 Weatherford/Lamb, Inc. Methods for expanding tubular strings and isolating subterranean zones
US6695063B2 (en) * 1999-12-22 2004-02-24 Weatherford/Lamb, Inc. Expansion assembly for a tubular expander tool, and method of tubular expansion
RU2187619C2 (ru) 2000-03-14 2002-08-20 Открытое акционерное общество "Татнефть" им. В.Д.Шашина Башмак для установки профильного перекрывателя в скважине
US7100685B2 (en) * 2000-10-02 2006-09-05 Enventure Global Technology Mono-diameter wellbore casing
WO2002029199A1 (en) 2000-10-02 2002-04-11 Shell Oil Company Method and apparatus for casing expansion
GB2379693B8 (en) * 2000-10-20 2012-12-19 Halliburton Energy Serv Inc Expandable wellbore tubing
US7121351B2 (en) * 2000-10-25 2006-10-17 Weatherford/Lamb, Inc. Apparatus and method for completing a wellbore
GB0026063D0 (en) * 2000-10-25 2000-12-13 Weatherford Lamb Downhole tubing
US7090025B2 (en) 2000-10-25 2006-08-15 Weatherford/Lamb, Inc. Methods and apparatus for reforming and expanding tubulars in a wellbore
CA2428819A1 (en) 2001-01-03 2002-07-11 Enventure Global Technology Mono-diameter wellbore casing
GB0102021D0 (en) * 2001-01-26 2001-03-14 E2 Tech Ltd Apparatus
CA2438807C (en) * 2001-02-20 2009-05-26 Enventure Global Technology Mono-diameter wellbore casing
US6662876B2 (en) * 2001-03-27 2003-12-16 Weatherford/Lamb, Inc. Method and apparatus for downhole tubular expansion
GB0108638D0 (en) * 2001-04-06 2001-05-30 Weatherford Lamb Tubing expansion
GB0109711D0 (en) * 2001-04-20 2001-06-13 E Tech Ltd Apparatus
US6550539B2 (en) * 2001-06-20 2003-04-22 Weatherford/Lamb, Inc. Tie back and method for use with expandable tubulars
BR0211114B1 (pt) 2001-07-13 2011-09-20 método de expandir radialmente um elemento tubular estendendo-se em um furo de poço.
US6648075B2 (en) * 2001-07-13 2003-11-18 Weatherford/Lamb, Inc. Method and apparatus for expandable liner hanger with bypass
GB0119977D0 (en) * 2001-08-16 2001-10-10 E2 Tech Ltd Apparatus and method
WO2003093623A2 (en) 2002-05-06 2003-11-13 Enventure Global Technology Mono diameter wellbore casing
WO2004094766A2 (en) 2003-04-17 2004-11-04 Enventure Global Technology Apparatus for radially expanding and plastically deforming a tubular member
US20080190616A1 (en) 2003-03-27 2008-08-14 Brock Wayne Watson Apparatus for Radially Expanding and Plastically Deforming a Tubular Member
GB2398326B (en) 2001-10-03 2005-08-24 Enventure Global Technology Mono-diameter wellbore casing
AU2002349004A1 (en) 2001-10-23 2003-05-06 Shell Internationale Research Maatschappij B.V. Downhole actuator and tool
GB2422859B (en) * 2001-11-12 2006-12-13 Enventure Global Technology Collapsible expansion cone
US6688397B2 (en) * 2001-12-17 2004-02-10 Schlumberger Technology Corporation Technique for expanding tubular structures
GB0131019D0 (en) * 2001-12-27 2002-02-13 Weatherford Lamb Bore isolation
AU2003202266A1 (en) 2002-02-15 2003-09-09 Enventure Global Technology Mono-diameter wellbore casing
GB0206227D0 (en) 2002-03-16 2002-05-01 Weatherford Lamb Bore-lining and drilling
US6668930B2 (en) 2002-03-26 2003-12-30 Weatherford/Lamb, Inc. Method for installing an expandable coiled tubing patch
US6691780B2 (en) * 2002-04-18 2004-02-17 Halliburton Energy Services, Inc. Tracking of particulate flowback in subterranean wells
AU2003225001A1 (en) 2002-05-29 2003-12-19 Eventure Global Technology System for radially expanding a tubular member
AU2003275132A1 (en) 2002-09-20 2004-04-08 Enventure Global Technlogy Mono diameter wellbore casing
WO2004092528A2 (en) 2003-04-07 2004-10-28 Enventure Global Technology Apparatus for radially expanding and plastically deforming a tubular member
AU2003298303A1 (en) 2002-11-26 2004-06-18 Shell Internationale Research Maatschappij B.V. Method of installing a tubular assembly in a wellbore
WO2004083594A2 (en) 2003-03-14 2004-09-30 Enventure Global Technology Apparatus and method radially expanding a wellbore casing using an expansion mandrel and a rotary expansion tool
GB2416794B (en) 2003-04-02 2007-11-21 Enventure Global Technology Apparatus and method for cutting a tubular member
CA2523779A1 (en) 2003-04-08 2004-10-28 Enventure Global Technology Apparatus for radially expanding and plastically deforming a tubular member
GB0315251D0 (en) 2003-06-30 2003-08-06 Bp Exploration Operating Device
CN100542018C (zh) * 2003-07-10 2009-09-16 Nxp股份有限公司 具有恒定偏移的运算放大器和包括这种运算放大器的设备
KR100666463B1 (ko) * 2004-04-06 2007-01-09 (주)빅플러스 씨알이 인조손톱 제조방법

Also Published As

Publication number Publication date
GB2402952A (en) 2004-12-22
CA2471053C (en) 2007-11-06
CA2471051A1 (en) 2004-12-16
NO20042515L (no) 2004-12-17
GB2402952B (en) 2007-04-04
GB2402953B (en) 2007-08-29
CA2471051C (en) 2007-11-06
US7255177B2 (en) 2007-08-14
GB0413397D0 (en) 2004-07-21
CA2471053A1 (en) 2004-12-16
US7367389B2 (en) 2008-05-06
US20050161226A1 (en) 2005-07-28
GB2402953A (en) 2004-12-22
NO335573B1 (no) 2014-12-29
NO335496B1 (no) 2014-12-22
US20060052936A1 (en) 2006-03-09
GB0413402D0 (en) 2004-07-21

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Legal Events

Date Code Title Description
CHAD Change of the owner's name or address (par. 44 patent law, par. patentforskriften)

Owner name: WEATHERFORD TECHNOLOGY HOLDINGS, US