EP0397875B1 - Dispositif de mandrinage de tubes - Google Patents

Dispositif de mandrinage de tubes Download PDF

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Publication number
EP0397875B1
EP0397875B1 EP89902699A EP89902699A EP0397875B1 EP 0397875 B1 EP0397875 B1 EP 0397875B1 EP 89902699 A EP89902699 A EP 89902699A EP 89902699 A EP89902699 A EP 89902699A EP 0397875 B1 EP0397875 B1 EP 0397875B1
Authority
EP
European Patent Office
Prior art keywords
rolling
casing
roller
pipes
borehole
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.)
Expired - Lifetime
Application number
EP89902699A
Other languages
German (de)
English (en)
Other versions
EP0397875A1 (fr
EP0397875A4 (en
Inventor
Konstantin Viktorovich Meling
Jury Anatolievich Safonov
Gabdrashit Sultanovich Abdrakhmanov
Jury Grigorievich Mikhailin
Rodion Mikhailovich Bogomolov
Valentin Vasilievich Salomatin
Almaz Adgamovich Mukhametshin
Salikhzyan Mukhametzyanovich Mingazov
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.)
TATARSKY GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INSTITUT NEFTYANOI PROMYSHLENNOSTI
Original Assignee
TATARSKY GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INSTITUT NEFTYANOI PROMYSHLENNOSTI
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
Application filed by TATARSKY GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INSTITUT NEFTYANOI PROMYSHLENNOSTI filed Critical TATARSKY GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INSTITUT NEFTYANOI PROMYSHLENNOSTI
Publication of EP0397875A1 publication Critical patent/EP0397875A1/fr
Publication of EP0397875A4 publication Critical patent/EP0397875A4/de
Application granted granted Critical
Publication of EP0397875B1 publication Critical patent/EP0397875B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02Subsoil filtering
    • E21B43/10Setting of casings, screens, liners or the like in wells
    • E21B43/103Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
    • E21B43/105Expanding tools specially adapted therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00Application of procedures in order to alter the diameter of tube ends
    • B21D41/02Enlarging
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00Cutting 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
    • E21B29/10Reconditioning of well casings, e.g. straightening
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02Subsoil filtering
    • E21B43/10Setting of casings, screens, liners or the like in wells
    • E21B43/103Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49908Joining by deforming
    • Y10T29/49938Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/4994Radially expanding internal tube
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53652Tube and coextensive core

Abstract

Le dispositif est destiné à mandriner les tubes profilés qui sont montés pour obturer des zones difficiles de forage de puits, ainsi que pour redresser des tubages déformés. Le dispositif comprend une structure (1) et un élément de mandrinage (3) monté dans des coussinets (4, 5) sur un tourillon (2) situé sur la structure (1) et faisant angle avec l'axe longitudinal de cette dernière. L'élément de mandrinage (3) comporte un segment sphérique (9) dont la surface externe est constituée de sections interchangeables de surfaces sphériques (10) et de surfaces latérales cylindriques (11), dont les axes géométriques sont situés dans un plan perpendiculaire à l'axe (13) du tourillon (2).

Claims (1)

  1. Dispositif pour le laminage de tubes, comprenant un boîtier (1) et un élément de laminage (3) disposé dans celui-ci selon un angle par rapport à l'axe longitudinal géométrique de celui-ci et qui est monté dans des paliers (4, 5) sur un tourillon (2), caractérisé en ce que l'élément de laminage (3) est réalisé sous forme d'un segment de sphère (9) dont la surface extérieure est formée par des portions alternantes d'une surface de sphère (10) et de surfaces latérales de cylindres (11) dont l'axe longitudinal géométrique (12) s'étendent dans un plan perpendiculaire à l'axe de tourillon (13).
EP89902699A 1988-11-22 1989-06-08 Dispositif de mandrinage de tubes Expired - Lifetime EP0397875B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/SU1988/000238 WO1990005831A1 (fr) 1988-11-22 1988-11-22 Dispositif de mandrinage de tubes
CA000609485A CA1322151C (fr) 1988-11-22 1989-08-25 Dispositif de dilatation de tube

Publications (3)

Publication Number Publication Date
EP0397875A1 EP0397875A1 (fr) 1990-11-22
EP0397875A4 EP0397875A4 (en) 1992-01-08
EP0397875B1 true EP0397875B1 (fr) 1994-02-16

Family

ID=25672981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89902699A Expired - Lifetime EP0397875B1 (fr) 1988-11-22 1989-06-08 Dispositif de mandrinage de tubes

Country Status (7)

Country Link
US (1) US5014779A (fr)
EP (1) EP0397875B1 (fr)
AU (1) AU621350B2 (fr)
CA (1) CA1322151C (fr)
DE (1) DE3887905D1 (fr)
NO (1) NO174637C (fr)
WO (1) WO1990005831A1 (fr)

Families Citing this family (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY108743A (en) * 1992-06-09 1996-11-30 Shell Int Research Method of greating a wellbore in an underground formation
US5861318A (en) * 1994-11-16 1999-01-19 Pharmacia & Upjohn Company Scintillation proximity assay for N-acetylgalactosaminyltransferase activity
UA67719C2 (en) * 1995-11-08 2004-07-15 Shell Int Research Deformable well filter and method for its installation
MY116920A (en) * 1996-07-01 2004-04-30 Shell Int Research Expansion of tubings
GB9714651D0 (en) 1997-07-12 1997-09-17 Petroline Wellsystems Ltd Downhole tubing
GB9723031D0 (en) * 1997-11-01 1998-01-07 Petroline Wellsystems Ltd Downhole tubing location method
US6354373B1 (en) 1997-11-26 2002-03-12 Schlumberger Technology Corporation Expandable tubing for a well bore hole and method of expanding
EP0952306A1 (fr) * 1998-04-23 1999-10-27 Shell Internationale Researchmaatschappij B.V. Tuyau pliable
EP0952305A1 (fr) 1998-04-23 1999-10-27 Shell Internationale Researchmaatschappij B.V. Conduit déformable
US6557640B1 (en) 1998-12-07 2003-05-06 Shell Oil Company Lubrication and self-cleaning system for expansion mandrel
US6745845B2 (en) 1998-11-16 2004-06-08 Shell Oil Company Isolation of subterranean zones
US6712154B2 (en) 1998-11-16 2004-03-30 Enventure Global Technology Isolation of subterranean zones
US6604763B1 (en) 1998-12-07 2003-08-12 Shell Oil Company Expandable connector
US7357188B1 (en) 1998-12-07 2008-04-15 Shell Oil Company Mono-diameter wellbore casing
US6640903B1 (en) 1998-12-07 2003-11-04 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
US6634431B2 (en) 1998-11-16 2003-10-21 Robert Lance Cook Isolation of subterranean zones
US6823937B1 (en) 1998-12-07 2004-11-30 Shell Oil Company Wellhead
GB2384502B (en) * 1998-11-16 2004-10-13 Shell Oil Co Coupling an expandable tubular member to a preexisting structure
US6575240B1 (en) 1998-12-07 2003-06-10 Shell Oil Company System and method for driving pipe
GB2343691B (en) 1998-11-16 2003-05-07 Shell Int Research Isolation of subterranean zones
GB2344606B (en) 1998-12-07 2003-08-13 Shell Int Research Forming a wellbore casing by expansion of a tubular member
US6739392B2 (en) 1998-12-07 2004-05-25 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
EP2273064A1 (fr) * 1998-12-22 2011-01-12 Weatherford/Lamb, Inc. Procédures et équipement pour le profilage et le jointage de tuyaux
GB0224807D0 (en) * 2002-10-25 2002-12-04 Weatherford Lamb Downhole filter
GB2345308B (en) * 1998-12-22 2003-08-06 Petroline Wellsystems Ltd Tubing anchor
AU766437B2 (en) 1998-12-22 2003-10-16 Weatherford/Lamb Inc. Downhole sealing for production tubing
AU770359B2 (en) 1999-02-26 2004-02-19 Shell Internationale Research Maatschappij B.V. Liner hanger
US6419025B1 (en) 1999-04-09 2002-07-16 Shell Oil Company Method of selective plastic expansion of sections of a tubing
DK1169547T3 (da) 1999-04-09 2003-08-18 Shell Int Research Fremgangsmåde til frembringelse af en borebrønd i en underjordisk formation
US6598677B1 (en) 1999-05-20 2003-07-29 Baker Hughes Incorporated Hanging liners by pipe expansion
GB9921557D0 (en) 1999-09-14 1999-11-17 Petroline Wellsystems Ltd Downhole apparatus
EG22306A (en) 1999-11-15 2002-12-31 Shell Int Research Expanding a tubular element in a wellbore
US6598678B1 (en) 1999-12-22 2003-07-29 Weatherford/Lamb, Inc. Apparatus and methods for separating and joining tubulars in a wellbore
US6325148B1 (en) 1999-12-22 2001-12-04 Weatherford/Lamb, Inc. Tools and methods for use with expandable tubulars
US6481407B1 (en) 2000-03-31 2002-11-19 K-Line Industries, Inc. Thin-walled valve guide insert and method for installing same within a cylinder head construction
EP1278932B1 (fr) * 2000-05-05 2006-02-22 Weatherford/Lamb, Inc. Dispositif et procedes de formation d'un puits lateral
US6530431B1 (en) 2000-06-22 2003-03-11 Halliburton Energy Services, Inc. Screen jacket assembly connection and methods of using same
US6412565B1 (en) 2000-07-27 2002-07-02 Halliburton Energy Services, Inc. Expandable screen jacket and methods of using same
US6691777B2 (en) * 2000-08-15 2004-02-17 Baker Hughes Incorporated Self-lubricating swage
US6494261B1 (en) 2000-08-16 2002-12-17 Halliburton Energy Services, Inc. Apparatus and methods for perforating a subterranean formation
US7121351B2 (en) * 2000-10-25 2006-10-17 Weatherford/Lamb, Inc. Apparatus and method for completing a wellbore
US7090025B2 (en) * 2000-10-25 2006-08-15 Weatherford/Lamb, Inc. Methods and apparatus for reforming and expanding tubulars in a wellbore
US20040011534A1 (en) * 2002-07-16 2004-01-22 Simonds Floyd Randolph Apparatus and method for completing an interval of a wellbore while drilling
US6543545B1 (en) 2000-10-27 2003-04-08 Halliburton Energy Services, Inc. Expandable sand control device and specialized completion system and method
US6568472B1 (en) 2000-12-22 2003-05-27 Halliburton Energy Services, Inc. Method and apparatus for washing a borehole ahead of screen expansion
US7172027B2 (en) * 2001-05-15 2007-02-06 Weatherford/Lamb, Inc. Expanding tubing
US6648075B2 (en) 2001-07-13 2003-11-18 Weatherford/Lamb, Inc. Method and apparatus for expandable liner hanger with bypass
US7793721B2 (en) 2003-03-11 2010-09-14 Eventure Global Technology, Llc Apparatus for radially expanding and plastically deforming a tubular member
US20030070811A1 (en) 2001-10-12 2003-04-17 Robison Clark E. Apparatus and method for perforating a subterranean formation
GB0128667D0 (en) 2001-11-30 2002-01-23 Weatherford Lamb Tubing expansion
GB0130849D0 (en) * 2001-12-22 2002-02-06 Weatherford Lamb Bore liner
US6732806B2 (en) 2002-01-29 2004-05-11 Weatherford/Lamb, Inc. One trip expansion method and apparatus for use in a wellbore
US6681862B2 (en) 2002-01-30 2004-01-27 Halliburton Energy Services, Inc. System and method for reducing the pressure drop in fluids produced through production tubing
AU2003230589A1 (en) 2002-04-12 2003-10-27 Enventure Global Technology Protective sleeve for threaded connections for expandable liner hanger
EP1501645A4 (fr) 2002-04-15 2006-04-26 Enventure Global Technology Manchon protecteur destine aux connexions filetees d'un dispositif de suspension pour colonne de tubage perdue expansible
GB0210256D0 (en) * 2002-05-03 2002-06-12 Weatherford Lamb Tubing anchor
US20030234111A1 (en) * 2002-06-19 2003-12-25 Echols Ralph H. Internal support apparatus for downhole tubular structures and method of use
FR2841626B1 (fr) * 2002-06-28 2004-09-24 Vallourec Mannesmann Oil & Gas Joint filete tubulaire renforce pour etancheite amelioree apres expansion plastique
GB0217937D0 (en) * 2002-08-02 2002-09-11 Stolt Offshore Sa Method of and apparatus for interconnecting lined pipes
EP1552271A1 (fr) 2002-09-20 2005-07-13 Enventure Global Technology Evaluation de formabilite de conduite pour des elements tubulaires extensibles
GB2410280B (en) * 2002-09-20 2007-04-04 Enventure Global Technology Self-lubricating expansion mandrel for expandable tubular
US7886831B2 (en) 2003-01-22 2011-02-15 Enventure Global Technology, L.L.C. Apparatus for radially expanding and plastically deforming a tubular member
CA2523862C (fr) 2003-04-17 2009-06-23 Enventure Global Technology Appareil servant a etendre radialement et deformer plastiquement un element tubulaire
CA2471051C (fr) * 2003-06-16 2007-11-06 Weatherford/Lamb, Inc. Expansion de colonne de production de puits de forage
RU2249090C1 (ru) * 2003-06-30 2005-03-27 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Устройство для установки профильного перекрывателя в скважине
GB0315997D0 (en) * 2003-07-09 2003-08-13 Weatherford Lamb Expanding tubing
US7712522B2 (en) 2003-09-05 2010-05-11 Enventure Global Technology, Llc Expansion cone and system
US7308944B2 (en) 2003-10-07 2007-12-18 Weatherford/Lamb, Inc. Expander tool for use in a wellbore
CA2577083A1 (fr) 2004-08-13 2006-02-23 Mark Shuster Dispositif d'expansion d'elements tubulaires
CA2523106C (fr) * 2004-10-12 2011-12-06 Weatherford/Lamb, Inc. Methodes et appareil de fabrication de materiel tubulaire expansible
BRPI0613612A2 (pt) * 2005-07-22 2012-11-06 Shell Int Research método para criar e testar uma barreira anular
US7798225B2 (en) * 2005-08-05 2010-09-21 Weatherford/Lamb, Inc. Apparatus and methods for creation of down hole annular barrier
GB0520859D0 (en) * 2005-10-14 2005-11-23 Weatherford Lamb Improved rotary expansion
US20140360453A1 (en) * 2013-06-06 2014-12-11 K-Line Industries, Inc. Valve guide insert with frictional pre-broach retention feature
US10711560B2 (en) * 2015-07-09 2020-07-14 Halliburton Energy Services, Inc. Wellbore plug sealing assembly
GB2599327B (en) 2017-05-03 2022-07-27 Halliburton Energy Services Inc Support device for tubing string
US20210370374A1 (en) * 2020-05-29 2021-12-02 Beckett Thermal Solutions Burnishing machine

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1417980A (en) * 1921-03-23 1922-05-30 Lovejoy Tool Works Multiple expander
US1597212A (en) * 1924-10-13 1926-08-24 Arthur F Spengler Casing roller
US1594114A (en) * 1924-11-28 1926-07-27 Adrian R Reynolds Collapsed-casing roller
US2237538A (en) * 1939-02-25 1941-04-08 John A Zublin Swedge
US3201827A (en) * 1963-04-08 1965-08-24 Anaconda Wire & Cable Co Tube-stretching mandrel
US3191677A (en) * 1963-04-29 1965-06-29 Myron M Kinley Method and apparatus for setting liners in tubing
US3528498A (en) * 1969-04-01 1970-09-15 Wilson Ind Inc Rotary cam casing swage
SU394133A1 (ru) * 1970-12-07 1973-08-22 Устройство для развальцовки концов труб
SU371340A1 (ru) * 1971-08-25 1973-02-22 В. А. Власюк, Н. Ф. Довгань , А. Р. Дацык Нефтегазодобывающее управление Бориславнефтегаз Роликовая оправка
SU432277A1 (ru) * 1972-07-25 1974-06-15 Ю. С. Бозырев, В. Ф. Пархоменко , М. Л. Кисельман Оправка для выправления сл1ятых обсадных колонн12
SU467994A1 (ru) * 1973-04-11 1975-04-25 Специальное Конструкторское Бюро Научно-Производственного Объединения "Геотехника" Оправка дл обсадных труб
US3818734A (en) * 1973-05-23 1974-06-25 J Bateman Casing expanding mandrel
SU599045A1 (ru) * 1977-01-18 1978-03-25 Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам Устройство дл выправлени см тых обсадных колонн
SU859603A1 (ru) * 1979-05-07 1981-08-30 Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам Устройство дл ликвидации см тий колонны труб
SU1265284A1 (ru) * 1985-04-15 1986-10-23 Азербайджанский государственный научно-исследовательский и проектный институт нефтяной промышленности Способ ремонта обсадной колонны в скважине

Also Published As

Publication number Publication date
NO903219D0 (no) 1990-07-18
NO903219L (no) 1990-07-18
WO1990005831A1 (fr) 1990-05-31
DE3887905D1 (de) 1994-03-24
NO174637C (no) 1994-06-08
AU621350B2 (en) 1992-03-12
US5014779A (en) 1991-05-14
NO174637B (no) 1994-02-28
EP0397875A1 (fr) 1990-11-22
CA1322151C (fr) 1993-09-14
AU3189889A (en) 1990-06-12
EP0397875A4 (en) 1992-01-08

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