NO981993D0 - Apparat og fremgangsmÕte for dannelse av et vindu eller et omriss av samme i et utforet borehulls foringsr÷r - Google Patents

Apparat og fremgangsmÕte for dannelse av et vindu eller et omriss av samme i et utforet borehulls foringsr÷r

Info

Publication number
NO981993D0
NO981993D0 NO981993A NO981993A NO981993D0 NO 981993 D0 NO981993 D0 NO 981993D0 NO 981993 A NO981993 A NO 981993A NO 981993 A NO981993 A NO 981993A NO 981993 D0 NO981993 D0 NO 981993D0
Authority
NO
Norway
Prior art keywords
outline
window
forming
same
bore casing
Prior art date
Application number
NO981993A
Other languages
English (en)
Other versions
NO981993L (no
NO313017B1 (no
Inventor
David Michael Haugen
Guy Lamont Mcclung
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 US08/568,878 external-priority patent/US5636692A/en
Priority claimed from US08/688,301 external-priority patent/US5709265A/en
Application filed by Weatherford Lamb filed Critical Weatherford Lamb
Publication of NO981993D0 publication Critical patent/NO981993D0/no
Publication of NO981993L publication Critical patent/NO981993L/no
Publication of NO313017B1 publication Critical patent/NO313017B1/no

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK 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
    • E21B29/002Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
    • E21B29/005Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe with a radially-expansible cutter rotating inside the pipe, e.g. for cutting an annular window
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK 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
    • E21B29/02Cutting 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 by explosives or by thermal or chemical means
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK 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
    • E21B29/06Cutting windows, e.g. directional window cutters for whipstock operations
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK 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
    • E21B43/11Perforators; Permeators
    • E21B43/114Perforators using direct fluid action on the wall to be perforated, e.g. abrasive jets
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK 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
    • E21B43/11Perforators; Permeators
    • E21B43/116Gun or shaped-charge perforators
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK 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
    • E21B43/11Perforators; Permeators
    • E21B43/116Gun or shaped-charge perforators
    • E21B43/1185Ignition systems
    • E21B43/11852Ignition systems hydraulically actuated
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK 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
    • E21B43/11Perforators; Permeators
    • E21B43/116Gun or shaped-charge perforators
    • E21B43/1185Ignition systems
    • E21B43/11855Ignition systems mechanically actuated, e.g. by movement of a wireline or a drop-bar
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/04Directional drilling
    • E21B7/06Deflecting the direction of boreholes
    • E21B7/061Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42DBLASTING
    • F42D3/00Particular applications of blasting techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Earth Drilling (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Paper (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
NO19981993A 1995-12-11 1998-05-04 Apparat og fremgangsmåte for utforming av et vindu eller et omriss av samme i et utfôret borehulls fôringsrör NO313017B1 (no)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/568,878 US5636692A (en) 1995-12-11 1995-12-11 Casing window formation
US08/688,301 US5709265A (en) 1995-12-11 1996-07-30 Wellbore window formation
US08/760,283 US5791417A (en) 1995-09-22 1996-12-04 Tubular window formation
PCT/GB1996/003059 WO1997021903A1 (en) 1995-12-11 1996-12-11 Apparatus and method for forming a window or an outline thereof in the casing of a cased wellbore

Publications (3)

Publication Number Publication Date
NO981993D0 true NO981993D0 (no) 1998-05-04
NO981993L NO981993L (no) 1998-06-09
NO313017B1 NO313017B1 (no) 2002-07-29

Family

ID=27416063

Family Applications (2)

Application Number Title Priority Date Filing Date
NO19981993A NO313017B1 (no) 1995-12-11 1998-05-04 Apparat og fremgangsmåte for utforming av et vindu eller et omriss av samme i et utfôret borehulls fôringsrör
NO20023200A NO328182B1 (no) 1995-12-11 2002-07-01 Apparat og fremgangsmate for utforming av et vindu eller et omriss av samme i et utfôret borehulls fôringsror

Family Applications After (1)

Application Number Title Priority Date Filing Date
NO20023200A NO328182B1 (no) 1995-12-11 2002-07-01 Apparat og fremgangsmate for utforming av et vindu eller et omriss av samme i et utfôret borehulls fôringsror

Country Status (7)

Country Link
US (2) US5791417A (no)
EP (2) EP1223304B1 (no)
AU (1) AU720240B2 (no)
CA (1) CA2236570C (no)
DE (1) DE69629584T2 (no)
NO (2) NO313017B1 (no)
WO (1) WO1997021903A1 (no)

Families Citing this family (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7108084B2 (en) * 1994-10-14 2006-09-19 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7147068B2 (en) * 1994-10-14 2006-12-12 Weatherford / Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7040420B2 (en) * 1994-10-14 2006-05-09 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7013997B2 (en) * 1994-10-14 2006-03-21 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US6868906B1 (en) * 1994-10-14 2005-03-22 Weatherford/Lamb, Inc. Closed-loop conveyance systems for well servicing
US6155343A (en) * 1996-10-25 2000-12-05 Baker Hughes Incorporated System for cutting materials in wellbores
US6109347A (en) * 1997-07-03 2000-08-29 Baker Hughes Incorporated One-trip, thru-tubing, window-milling system
US6536520B1 (en) * 2000-04-17 2003-03-25 Weatherford/Lamb, Inc. Top drive casing system
US7509722B2 (en) * 1997-09-02 2009-03-31 Weatherford/Lamb, Inc. Positioning and spinning device
US6742596B2 (en) * 2001-05-17 2004-06-01 Weatherford/Lamb, Inc. Apparatus and methods for tubular makeup interlock
US6098728A (en) * 1998-03-27 2000-08-08 Baker Hughes Incorporated Rock bit nozzle arrangement
GB9815809D0 (en) * 1998-07-22 1998-09-16 Appleton Robert P Casing running tool
GB2340857A (en) * 1998-08-24 2000-03-01 Weatherford Lamb An apparatus for facilitating the connection of tubulars and alignment with a top drive
US7191840B2 (en) * 2003-03-05 2007-03-20 Weatherford/Lamb, Inc. Casing running and drilling system
US6279659B1 (en) * 1998-10-20 2001-08-28 Weatherford Lamb, Inc. Assembly and method for providing a means of support and positioning for drilling multi-lateral wells and for reentry therein through a premilled window
US6186233B1 (en) * 1998-11-30 2001-02-13 Weatherford Lamb, Inc. Down hole assembly and method for forming a down hole window and at least one keyway in communication with the down hole window for use in multilateral wells
US7188687B2 (en) * 1998-12-22 2007-03-13 Weatherford/Lamb, Inc. Downhole filter
EP1147287B1 (en) * 1998-12-22 2005-08-17 Weatherford/Lamb, Inc. Procedures and equipment for profiling and jointing of pipes
GB2345074A (en) * 1998-12-24 2000-06-28 Weatherford Lamb Floating joint to facilitate the connection of tubulars using a top drive
GB2347441B (en) * 1998-12-24 2003-03-05 Weatherford Lamb Apparatus and method for facilitating the connection of tubulars using a top drive
NO330930B1 (no) * 1999-01-15 2011-08-22 Weatherford Lamb Fremgangsmate for utforming av en sidegren fra et borehull
US6857487B2 (en) * 2002-12-30 2005-02-22 Weatherford/Lamb, Inc. Drilling with concentric strings of casing
US6896075B2 (en) * 2002-10-11 2005-05-24 Weatherford/Lamb, Inc. Apparatus and methods for drilling with casing
US6971449B1 (en) 1999-05-04 2005-12-06 Weatherford/Lamb, Inc. Borehole conduit cutting apparatus and process
US6374918B2 (en) 1999-05-14 2002-04-23 Weatherford/Lamb, Inc. In-tubing wellbore sidetracking operations
US6915875B2 (en) * 1999-06-03 2005-07-12 Baker Hughes Incorporated Acoustic isolator for downhole applications
US7028806B2 (en) * 1999-06-03 2006-04-18 Baker Hughes Incorporated Acoustic isolator for downhole applications
US6363856B1 (en) 1999-06-08 2002-04-02 Roscoe R. Stoker, Jr. Projectile for a small arms cartridge and method for making same
US6260623B1 (en) 1999-07-30 2001-07-17 Kmk Trust Apparatus and method for utilizing flexible tubing with lateral bore holes
US6708769B2 (en) * 2000-05-05 2004-03-23 Weatherford/Lamb, Inc. Apparatus and methods for forming a lateral wellbore
WO2001046550A1 (en) * 1999-12-22 2001-06-28 Weatherford/Lamb, Inc. Drilling bit for drilling while running casing
US7077206B2 (en) * 1999-12-23 2006-07-18 Re-Entry Technologies, Inc. Method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores
US20060124306A1 (en) * 2000-01-19 2006-06-15 Vail William B Iii Installation of one-way valve after removal of retrievable drill bit to complete oil and gas wells
US7325610B2 (en) * 2000-04-17 2008-02-05 Weatherford/Lamb, Inc. Methods and apparatus for handling and drilling with tubulars or casing
GB0010378D0 (en) * 2000-04-28 2000-06-14 Bbl Downhole Tools Ltd Expandable apparatus for drift and reaming a borehole
US6536525B1 (en) * 2000-09-11 2003-03-25 Weatherford/Lamb, Inc. Methods and apparatus for forming a lateral wellbore
US6695056B2 (en) * 2000-09-11 2004-02-24 Weatherford/Lamb, Inc. System for forming a window and drilling a sidetrack wellbore
US6494259B2 (en) * 2001-03-30 2002-12-17 Halliburton Energy Services, Inc. Downhole flame spray welding tool system and method
GB0206227D0 (en) * 2002-03-16 2002-05-01 Weatherford Lamb Bore-lining and drilling
AU2003228520A1 (en) * 2002-04-12 2003-10-27 Weatherford/Lamb, Inc. Whipstock assembly and method of manufacture
US6994176B2 (en) * 2002-07-29 2006-02-07 Weatherford/Lamb, Inc. Adjustable rotating guides for spider or elevator
US6899186B2 (en) * 2002-12-13 2005-05-31 Weatherford/Lamb, Inc. Apparatus and method of drilling with casing
US7730965B2 (en) 2002-12-13 2010-06-08 Weatherford/Lamb, Inc. Retractable joint and cementing shoe for use in completing a wellbore
US7077212B2 (en) * 2002-09-20 2006-07-18 Weatherford/Lamb, Inc. Method of hydraulically actuating and mechanically activating a downhole mechanical apparatus
US7086481B2 (en) 2002-10-11 2006-08-08 Weatherford/Lamb Wellbore isolation apparatus, and method for tripping pipe during underbalanced drilling
US7303022B2 (en) * 2002-10-11 2007-12-04 Weatherford/Lamb, Inc. Wired casing
US6929063B2 (en) 2002-11-05 2005-08-16 Baker Hughes Incorporated Cutting locator tool
US6953096B2 (en) * 2002-12-31 2005-10-11 Weatherford/Lamb, Inc. Expandable bit with secondary release device
USRE42877E1 (en) 2003-02-07 2011-11-01 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
GB2414502B (en) * 2003-02-27 2007-10-17 Weatherford Lamb Drill shoe
GB2433276B (en) * 2003-03-05 2007-10-17 Weatherford Lamb Full bore lined wellbores
GB2428059B (en) * 2003-03-05 2007-10-10 Weatherford Lamb Method and apparatus for drilling with casing
US7503397B2 (en) * 2004-07-30 2009-03-17 Weatherford/Lamb, Inc. Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly
GB2414759B (en) * 2003-04-04 2007-11-07 Weatherford Lamb Method and apparatus for handling wellbore tubulars
US7650944B1 (en) 2003-07-11 2010-01-26 Weatherford/Lamb, Inc. Vessel for well intervention
US7264067B2 (en) * 2003-10-03 2007-09-04 Weatherford/Lamb, Inc. Method of drilling and completing multiple wellbores inside a single caisson
US7487835B2 (en) * 2004-05-20 2009-02-10 Weatherford/Lamb, Inc. Method of developing a re-entry into a parent wellbore from a lateral wellbore, and bottom hole assembly for milling
GB2424432B (en) * 2005-02-28 2010-03-17 Weatherford Lamb Deep water drilling with casing
US7789134B2 (en) * 2006-02-01 2010-09-07 Baker Hughes Incorporated Downhole/openhole anchor
US7857052B2 (en) * 2006-05-12 2010-12-28 Weatherford/Lamb, Inc. Stage cementing methods used in casing while drilling
US8276689B2 (en) * 2006-05-22 2012-10-02 Weatherford/Lamb, Inc. Methods and apparatus for drilling with casing
US7537060B2 (en) * 2007-03-19 2009-05-26 Baker Hughes Incorporated Coupler retained liner hanger mechanism and methods of setting a hanger inside a wellbore
US20080236829A1 (en) * 2007-03-26 2008-10-02 Lynde Gerald D Casing profiling and recovery system
US7690428B2 (en) * 2007-05-31 2010-04-06 Robertson Intellectual Properties, LLC Perforating torch apparatus and method
US7849918B2 (en) 2007-07-02 2010-12-14 Davis-Lynch, Inc. Centering structure for tubular member and method of making same
US7631706B2 (en) 2007-07-17 2009-12-15 Schlumberger Technology Corporation Methods, systems and apparatus for production of hydrocarbons from a subterranean formation
US8235102B1 (en) 2008-03-26 2012-08-07 Robertson Intellectual Properties, LLC Consumable downhole tool
US8020619B1 (en) 2008-03-26 2011-09-20 Robertson Intellectual Properties, LLC Severing of downhole tubing with associated cable
US8327926B2 (en) 2008-03-26 2012-12-11 Robertson Intellectual Properties, LLC Method for removing a consumable downhole tool
US7726392B1 (en) 2008-03-26 2010-06-01 Robertson Michael C Removal of downhole drill collar from well bore
US8069920B2 (en) * 2009-04-02 2011-12-06 Knight Information Systems, L.L.C. Lateral well locator and reentry apparatus and method
US8505621B2 (en) * 2010-03-30 2013-08-13 Halliburton Energy Services, Inc. Well assembly with recesses facilitating branch wellbore creation
CN102364029B (zh) * 2011-11-12 2014-01-08 锦州清华机械有限公司 一体式开窗侧钻工具
WO2014109962A1 (en) 2013-01-08 2014-07-17 Knight Information Systems, Llc Multi-window lateral well locator/reentry apparatus and method
NO336445B1 (no) 2013-02-13 2015-08-24 Well Technology As Fremgangsmåte for nedihulls kutting av minst én linje som er anordnet utenpå og langsetter en rørstreng i en brønn, og uten samtidig å kutte rørstrengen
WO2015030752A2 (en) * 2013-08-28 2015-03-05 Halliburton Energy Services Inc. Method for hydraulic communication with target well from relief well
NO339191B1 (no) 2013-09-06 2016-11-14 Hydra Systems As Fremgangsmåte for isolering av en permeabel sone i en underjordisk brønn
GB201406071D0 (en) * 2014-04-04 2014-05-21 Bisn Tec Ltd Well Casing / Tubing Disposal
US10145195B2 (en) * 2014-05-12 2018-12-04 Halliburton Energy Services, Inc. Well-component severing tool with a radially-nonuniform explosive cartridge
US10538983B2 (en) * 2014-08-06 2020-01-21 Schlumberger Technology Corporation Milling tools with a secondary attrition system
GB201506265D0 (en) 2015-04-13 2015-05-27 Spex Services Ltd Improved tool
CA2967742C (en) * 2014-11-18 2018-09-04 Spex Engineering (Uk) Limited Downhole tool with a propellant charge
RU2663007C1 (ru) * 2014-12-17 2018-08-01 Хэллибертон Энерджи Сервисиз, Инк. Узел однопроходного фрезера
AU2015383612B2 (en) * 2015-02-18 2020-06-18 Ant Applied New Technologies Ag Abrasive waterjet cutting installation
AU2015401012B2 (en) 2015-07-02 2020-12-03 Halliburton Energy Services, Inc. Establishing hydraulic communication between relief well and target well
US10030961B2 (en) 2015-11-27 2018-07-24 General Electric Company Gap measuring device
GB201601009D0 (en) 2016-01-19 2016-03-02 Spex Engineering Uk Ltd Improved tool
NL2017125B1 (en) 2016-07-07 2018-01-15 Callidus Capital B V Method and arrangement for removing a liner below surface
US10989006B2 (en) * 2018-02-22 2021-04-27 Halliburton Energy Services, Inc. Creation of a window opening/exit utilizing a single trip process
WO2019194899A1 (en) * 2018-04-03 2019-10-10 Schlumberger Technology Corporation Methods, apparatus and systems for creating bismuth alloy plugs for abandoned wells
US11643902B2 (en) * 2018-04-03 2023-05-09 Schlumberger Technology Corporation Methods, apparatus and systems for creating wellbore plugs for abandoned wells
US11434712B2 (en) 2018-04-16 2022-09-06 Weatherford Technology Holdings, Llc Whipstock assembly for forming a window
CN112780208B (zh) * 2021-01-06 2021-10-26 中国矿业大学 一种瓦斯抽采钻井错断变形区域修复系统及修复方法
US20220364425A1 (en) * 2021-05-13 2022-11-17 Baker Hughes Oilfield Operations Llc Separable tool with mill face, method and system
US11725458B2 (en) * 2021-10-01 2023-08-15 Saudi Arabian Oil Company Cutting a sidetrack window

Family Cites Families (181)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273642A (en) * 1966-09-20 Method of imploding frangible capsules used in well treatments
US941852A (en) * 1908-12-30 1909-11-30 Du Pont Powder Co Apparatus for firing explosives in wells.
US1641483A (en) * 1925-04-08 1927-09-06 Haskell M Greene Means for cutting oil-well casings and drill pipe
US2067408A (en) * 1935-03-15 1937-01-12 Paul R Robb Apparatus for cleaning wells
US2141827A (en) * 1935-11-16 1938-12-27 Schlumberger Prospection Device for distant firing of explosive charges
USRE21356E (en) * 1936-03-10 1940-02-13 Method of and means for treating wells
US2169671A (en) * 1936-06-22 1939-08-15 Vera E Yarbrough Casing perforator
US2302567A (en) * 1937-12-13 1942-11-17 Edith L O Neill Method and means of perforating well casing and the like
US2315496A (en) * 1938-11-28 1943-04-06 Boynton Alexander Perforator for wells
US2214226A (en) * 1939-03-29 1940-09-10 English Aaron Method and apparatus useful in drilling and producing wells
US2535964A (en) * 1945-07-30 1950-12-26 John J Fleet Means for casing cutting
US2587244A (en) * 1946-11-12 1952-02-26 I J Mccullough Apparatus for cutting pipes within a well
US2629445A (en) * 1946-11-23 1953-02-24 Kinley John C Pipe severing method and apparatus
US2566682A (en) * 1947-01-10 1951-09-04 I J Mccullough Mechanism for detonating explosives
US2621351A (en) * 1948-08-30 1952-12-16 Phillips Petroleum Co Apparatus for forcibly propelling pellets against a surface
US2679380A (en) * 1948-10-08 1954-05-25 William G Sweetman Apparatus for advancing well bores by explosives
US2519116A (en) * 1948-12-28 1950-08-15 Shell Dev Deformable packer
US2680487A (en) * 1949-01-04 1954-06-08 Phillips Petroleum Co Method and apparatus for well operations employing hydrogen peroxide
US2719485A (en) * 1950-01-09 1955-10-04 Eastman Oil Well Survey Co Magnetic control devices
US2758543A (en) * 1950-04-10 1956-08-14 Clarence W Grandin Cutting method and apparatus
US2703053A (en) * 1951-04-05 1955-03-01 Perforating Guns Atlas Corp Firing circuit for perforating guns
US2760408A (en) * 1953-05-19 1956-08-28 Johnston Testers Inc Firing head
US2918125A (en) * 1955-05-09 1959-12-22 William G Sweetman Chemical cutting method and apparatus
US2858653A (en) * 1956-02-17 1958-11-04 Texas Co Abrading objects
US2897756A (en) * 1957-02-21 1959-08-04 Randel Tool Company Inc Method of sinking wells by means of explosive charges
US3010396A (en) * 1957-12-31 1961-11-28 Western Co Of North America Selective firing apparatus
US3076507A (en) * 1958-05-16 1963-02-05 William G Sweetman Chemical cutting method and apparatus for use in wells
US3175617A (en) * 1958-08-22 1965-03-30 Jersey Prod Res Co Alignment means for perforating multi-pipe string wells
US3048102A (en) * 1959-01-30 1962-08-07 Schlumberger Well Surv Corp Perforating apparatus
US3014423A (en) * 1959-11-27 1961-12-26 Jersey Prod Res Co Apparatus for drilling boreholes with explosive charges
US3053182A (en) * 1960-04-04 1962-09-11 Jet Res Ct Inc Apparatus for cutting sections from well casings
US3066735A (en) * 1960-05-25 1962-12-04 Dow Chemical Co Hydraulic jetting tool
US3066736A (en) * 1960-06-15 1962-12-04 Dresser Ind Hydraulic perforating gun
US3138207A (en) * 1960-06-20 1964-06-23 Halliburton Co Pressure balanced actuating device
US3070011A (en) * 1960-07-11 1962-12-25 Jersey Prod Res Co Directional drilling with explosive charges
US3088006A (en) * 1960-10-13 1963-04-30 Kabik Irving Method of internally venting gasless delays
US3118508A (en) * 1962-08-20 1964-01-21 Jersey Prod Res Co Drilling of off-vertical boreholes
US3327781A (en) * 1964-11-06 1967-06-27 Schlumberger Technology Corp Methods for performing operations in a well bore
US3318395A (en) * 1964-12-28 1967-05-09 Gulf Research Development Co Method and apparatus for cutting a hole in the wall of a well
US3404919A (en) * 1966-05-04 1968-10-08 Nuclear Proc Corp Method of creating large diameter boreholes using underground nuclear detonations
US3576219A (en) * 1969-09-08 1971-04-27 Mobil Oil Corp Method and apparatus for explosive drilling utilizing spark pumps for detonating explosives
US3654866A (en) * 1970-06-18 1972-04-11 Hercules Inc Mach effect in presplitting
US3706340A (en) * 1971-04-07 1972-12-19 Schlumberger Technology Corp Methods for perforating an earth formation
US3874461A (en) * 1973-08-16 1975-04-01 Western Co Of North America Perforating apparatus
US3878786A (en) * 1973-12-27 1975-04-22 Explo Ridgeway International L Safety detonator device for detonating fusecord
FR2285593A1 (fr) * 1974-09-20 1976-04-16 Schlumberger Inst System Support de charges creuses pour la mise en production des forages et notamment des puits a gaz
US3990507A (en) * 1974-11-11 1976-11-09 Vann Roy Randell High temperature perforating apparatus
US3951218A (en) * 1975-04-11 1976-04-20 Schlumberger Technology Corporation Perforating apparatus
US3990512A (en) * 1975-07-10 1976-11-09 Ultrasonic Energy Corporation Method and system for ultrasonic oil recovery
US4078611A (en) * 1975-10-14 1978-03-14 Vann Roy Randell High temperature perforating method
US4040482A (en) * 1976-06-28 1977-08-09 Vann Roy Randell Optional fire and release tool and method
US4071096A (en) * 1977-01-10 1978-01-31 Jet Research Center, Inc. Shaped charge well perforating apparatus
US4132247A (en) * 1977-05-04 1979-01-02 Owen, Wickersham & Erickson Fluid mixing apparatus
US4106561A (en) * 1977-05-12 1978-08-15 Jerome Robert J Well casing perforator
US4122899A (en) * 1977-08-08 1978-10-31 Brieger Emmet F Well perforator with anchor and method
US4180131A (en) * 1977-09-06 1979-12-25 Weatherford/Dmc Chemical cutting apparatus for use in wells
US4119148A (en) * 1977-09-07 1978-10-10 Deardorf Eldon N Perforating apparatus and method for well casing
US4113016A (en) * 1977-09-26 1978-09-12 Trott Donald E Casing perforation method and apparatus
DE2745408A1 (de) * 1977-10-08 1979-04-12 Messerschmitt Boelkow Blohm Verfahren zum zerlegen starkwandiger behaeltnisse, insbesondere solcher, die radioaktiv verseucht sind
US4208966A (en) * 1978-02-21 1980-06-24 Schlumberger Technology Corporation Methods and apparatus for selectively operating multi-charge well bore guns
DE2904338C2 (de) * 1979-02-06 1982-05-13 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Verfahren zum Zerstören von Betonwänden o.dgl. Gegenständen aus ähnlichem Material durch Sprengeinwirkungen
US4378844A (en) * 1979-06-29 1983-04-05 Nl Industries, Inc. Explosive cutting system
US4354433A (en) * 1980-03-18 1982-10-19 Pengo Industries, Inc. Apparatus for cutting pipe
US4409481A (en) * 1980-08-28 1983-10-11 Halliburton Company Method for simultaneous measurement of thermal neutron decay components
US4352397A (en) * 1980-10-03 1982-10-05 Jet Research Center, Inc. Methods, apparatus and pyrotechnic compositions for severing conduits
US4560000A (en) * 1982-04-16 1985-12-24 Schlumberger Technology Corporation Pressure-activated well perforating apparatus
US4509604A (en) * 1982-04-16 1985-04-09 Schlumberger Technology Corporation Pressure responsive perforating and testing system
US4538680A (en) * 1982-06-03 1985-09-03 Geo Vann, Inc. Gun below packer completion tool string
GB2128719B (en) * 1982-10-20 1986-11-26 Vann Inc Geo Gravity oriented perforating gun for use in slanted boreholes
US4601498A (en) * 1982-11-15 1986-07-22 Baker Oil Tools, Inc. Deformable metal-to-metal seal
US4511296A (en) * 1983-03-16 1985-04-16 Invocas, Inc. Anchor bolt with mechanical keys deployed by internal pressurization
US4544034A (en) * 1983-03-31 1985-10-01 Geo Vann, Inc. Actuation of a gun firing head
US4614156A (en) * 1984-03-08 1986-09-30 Halliburton Company Pressure responsive explosion initiator with time delay and method of use
US4566544A (en) * 1984-10-29 1986-01-28 Schlumberger Technology Corporation Firing system for tubing conveyed perforating gun
US4633945A (en) * 1984-12-03 1987-01-06 Schlumberger Technology Corporation Permanent completion tubing conveyed perforating system
US4598769A (en) * 1985-01-07 1986-07-08 Robertson Michael C Pipe cutting apparatus
CA1220134A (en) * 1985-01-25 1987-04-07 Paavo Luoma Topping and tamping plug
US4610312A (en) * 1985-06-10 1986-09-09 Baker Oil Tools, Inc. Redundant firing mechanism for a well perforating gun
US4612985A (en) * 1985-07-24 1986-09-23 Baker Oil Tools, Inc. Seal assembly for well tools
US4616718A (en) * 1985-08-05 1986-10-14 Hughes Tool Company Firing head for a tubing conveyed perforating gun
US4716963A (en) * 1985-08-27 1988-01-05 Halliburton Company Apparatus for well completion operations
US4655298A (en) * 1985-09-05 1987-04-07 Halliburton Company Annulus pressure firer mechanism with releasable fluid conduit force transmission means
US4726610A (en) * 1985-09-05 1988-02-23 Halliburton Company Annulus pressure firer mechanism with releasable fluid conduit force transmission means
US4662450A (en) * 1985-09-13 1987-05-05 Haugen David M Explosively set downhole apparatus
US4699241A (en) * 1985-10-24 1987-10-13 Atlantic Richfield Company Method and apparatus for detonation of distributed charges
US5373900A (en) 1988-04-15 1994-12-20 Baker Hughes Incorporated Downhole milling tool
US4938291A (en) * 1986-01-06 1990-07-03 Lynde Gerald D Cutting tool for cutting well casing
US4978260A (en) 1986-01-06 1990-12-18 Tri-State Oil Tools, Inc. Cutting tool for removing materials from well bore
US5150755A (en) 1986-01-06 1992-09-29 Baker Hughes Incorporated Milling tool and method for milling multiple casing strings
US5014778A (en) * 1986-01-06 1991-05-14 Tri-State Oil Tools, Inc. Milling tool for cutting well casing
US5038859A (en) * 1988-04-15 1991-08-13 Tri-State Oil Tools, Inc. Cutting tool for removing man-made members from well bore
US4887668A (en) * 1986-01-06 1989-12-19 Tri-State Oil Tool Industries, Inc. Cutting tool for cutting well casing
US4796709A (en) * 1986-01-06 1989-01-10 Tri-State Oil Tool Industries, Inc. Milling tool for cutting well casing
US5086838A (en) 1986-01-06 1992-02-11 Baker Hughes Incorporated Tapered cutting tool for reaming tubular members in well bore
US4694754A (en) * 1986-04-21 1987-09-22 Jet Research Inc. Multi-phase charge holder
EP0310625B1 (en) * 1986-06-19 1992-11-19 Phoenix Petroleum Services Improvements relating to detonating heads
US4762179A (en) * 1986-08-04 1988-08-09 Halliburton Company Pressure assist detonating bar and method for a tubing conveyed perforator
US4800958A (en) * 1986-08-07 1989-01-31 Halliburton Company Annulus pressure operated vent assembly
US4744424A (en) * 1986-08-21 1988-05-17 Schlumberger Well Services Shaped charge perforating apparatus
US4760884A (en) * 1986-09-16 1988-08-02 Halliburton Company Air chamber actuated dual tubing release assembly
GB8629746D0 (en) * 1986-12-12 1987-01-21 Phoenix Petroleum Services Installation of downhole pumps in wells
US4901802A (en) * 1987-04-20 1990-02-20 George Flint R Method and apparatus for perforating formations in response to tubing pressure
US4798244A (en) * 1987-07-16 1989-01-17 Trost Stephen A Tool and process for stimulating a subterranean formation
US4787315A (en) * 1987-08-31 1988-11-29 Kenny John J Apparatus for severing tubular members
US4911251A (en) * 1987-12-03 1990-03-27 Halliburton Company Method and apparatus for actuating a tubing conveyed perforating gun
US4905759A (en) * 1988-03-25 1990-03-06 Halliburton Company Collapsible gun assembly
GB8817178D0 (en) 1988-07-19 1988-08-24 Phoenix Petroleum Services Apparatus for detonating well casing perforating guns
US4909320A (en) * 1988-10-14 1990-03-20 Drilex Systems, Inc. Detonation assembly for explosive wellhead severing system
US4886126A (en) * 1988-12-12 1989-12-12 Baker Hughes Incorporated Method and apparatus for firing a perforating gun
US5022485A (en) * 1989-04-13 1991-06-11 Mitchell Donald K Method and apparatus for detonation of distributed charges
FR2648509B1 (fr) * 1989-06-20 1991-10-04 Inst Francais Du Petrole Methode et dispositif pour conduire des operations de perforation dans un puits
US4969525A (en) * 1989-09-01 1990-11-13 Halliburton Company Firing head for a perforating gun assembly
GB9003047D0 (en) 1990-02-10 1990-04-11 Tri State Oil Tool Uk Insert type window mill
GB2240798A (en) 1990-02-12 1991-08-14 Shell Int Research Method and apparatus for perforating a well liner and for fracturing a surrounding formation
US5016716A (en) * 1990-04-25 1991-05-21 Baker Hughes Incorporated Tubing carried perforating gun with insulation jacket
US5067568A (en) 1990-04-25 1991-11-26 Baker Hughes Incorporated Well perforating gun
US5177321A (en) 1990-08-28 1993-01-05 Kenny John J Apparatus for severing tubular members
US5111885A (en) 1990-10-17 1992-05-12 Directional Wireline Service, Inc. Decentralized casing hole puncher
US5103906A (en) 1990-10-24 1992-04-14 Halliburton Company Hydraulic timer for downhole tool
US5054555A (en) * 1990-11-21 1991-10-08 Technical Concepts, Inc. Tension-actuated mechanical detonating device useful for detonating downhole explosive
US5101907A (en) 1991-02-20 1992-04-07 Halliburton Company Differential actuating system for downhole tools
US5215148A (en) 1991-05-10 1993-06-01 Dresser Industries, Inc. Subsurface well pressure actuated and fired apparatus
US5161616A (en) 1991-05-22 1992-11-10 Dresser Industries, Inc. Differential firing head and method of operation thereof
US5279363A (en) 1991-07-15 1994-01-18 Halliburton Company Shut-in tools
US5509481A (en) 1992-03-26 1996-04-23 Schlumberger Technology Corporation Method of perforating including an automatic release apparatus suspending by wireline or coiled tubing in a wellbore for perforating a long length interval of the wellbore in a single run using a gun string longer than a wellhead lubricator
US5289876A (en) 1992-07-28 1994-03-01 Natural Reserves Group, Inc. Completing wells in incompetent formations
US5322127C1 (en) 1992-08-07 2001-02-06 Baker Hughes Inc Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells
US5353876A (en) 1992-08-07 1994-10-11 Baker Hughes Incorporated Method and apparatus for sealing the juncture between a verticle well and one or more horizontal wells using mandrel means
US5355957A (en) 1992-08-28 1994-10-18 Halliburton Company Combined pressure testing and selective fired perforating systems
US5301760C1 (en) 1992-09-10 2002-06-11 Natural Reserve Group Inc Completing horizontal drain holes from a vertical well
AU670612B2 (en) 1992-10-08 1996-07-25 Orica Explosives Technology Pty Ltd Shock resistant detonator and method of making the same
US5551344A (en) 1992-11-10 1996-09-03 Schlumberger Technology Corporation Method and apparatus for overbalanced perforating and fracturing in a borehole
US5337808A (en) 1992-11-20 1994-08-16 Natural Reserves Group, Inc. Technique and apparatus for selective multi-zone vertical and/or horizontal completions
US5370186A (en) 1992-12-18 1994-12-06 Baker Hughes Incorporated Apparatus and method of perforating wellbores
FR2702273B1 (fr) 1993-03-05 1995-06-02 Lacroix E Tous Artifices Tête pyrotechnique à moyens de dispersion perfectionnés.
US5301755A (en) 1993-03-11 1994-04-12 Halliburton Company Air chamber actuator for a perforating gun
ZA942276B (en) 1993-04-08 1994-10-11 Aeci Ltd Loading of boreholes with flowable explosive
US5381631A (en) 1993-04-15 1995-01-17 Flow International Corporation Method and apparatus for cutting metal casings with an ultrahigh-pressure abrasive fluid jet
ZA946555B (en) 1993-05-28 1995-06-12 Altech Ind Pty Ltd An electric igniter
US5427177A (en) 1993-06-10 1995-06-27 Baker Hughes Incorporated Multi-lateral selective re-entry tool
US5501154A (en) 1993-07-06 1996-03-26 Teledyne Industries, Inc. Substantially lead-free tin alloy sheath material for explosive-pyrotechnic linear products
US5505134A (en) 1993-09-01 1996-04-09 Schlumberger Technical Corporation Perforating gun having a plurality of charges including a corresponding plurality of exploding foil or exploding bridgewire initiator apparatus responsive to a pulse of current for simultaneously detonating the plurality of charges
US5727629A (en) 1996-01-24 1998-03-17 Weatherford/Lamb, Inc. Wellbore milling guide and method
US5632348A (en) 1993-10-07 1997-05-27 Conoco Inc. Fluid activated detonating system
US5506136A (en) 1993-10-21 1996-04-09 Westvaco Corporation Method for regeneration of coniferous plants by somatic embryogenesis
US5499579A (en) 1993-10-22 1996-03-19 Universal Propulsion Company, Inc. Delay ordnance system
US5507230A (en) 1993-10-22 1996-04-16 Universal Propulsion Company, Inc. Self-powered delayed ordnance
US5503077A (en) 1994-03-29 1996-04-02 Halliburton Company Explosive detonation apparatus
NO309622B1 (no) 1994-04-06 2001-02-26 Conoco Inc Anordning og fremgangsmåte for komplettering av et brönnhull
US5435400B1 (en) 1994-05-25 1999-06-01 Atlantic Richfield Co Lateral well drilling
US5435394A (en) 1994-06-01 1995-07-25 Mcr Corporation Anchor system for pipe cutting apparatus
US5505261A (en) 1994-06-07 1996-04-09 Schlumberger Technology Corporation Firing head connected between a coiled tubing and a perforating gun adapted to move freely within a tubing string and actuated by fluid pressure in the coiled tubing
US5613557A (en) 1994-07-29 1997-03-25 Atlantic Richfield Company Apparatus and method for sealing perforated well casing
US5564503A (en) 1994-08-26 1996-10-15 Halliburton Company Methods and systems for subterranean multilateral well drilling and completion
DE69531920T2 (de) 1994-08-31 2004-08-19 Halliburton Energy Services, Inc., Dallas Vorrichtung zum Verbinden von Perforatoren im Bohrloch
AUPM825794A0 (en) 1994-09-20 1994-10-13 Gray, Ian Wellbore stimulation and completion device
US5590723A (en) 1994-09-22 1997-01-07 Halliburton Company Perforating charge carrier assembly
US5660232A (en) 1994-11-08 1997-08-26 Baker Hughes Incorporated Liner valve with externally mounted perforation charges
US5490563A (en) 1994-11-22 1996-02-13 Halliburton Company Perforating gun actuator
US5477925A (en) 1994-12-06 1995-12-26 Baker Hughes Incorporated Method for multi-lateral completion and cementing the juncture with lateral wellbores
US5542480A (en) 1994-12-08 1996-08-06 Owen Oil Tools, Inc. Perforating gun with retrievable mounting strips
US5467824A (en) 1994-12-09 1995-11-21 Senior Engineering Company Apparatus for and a method of severing multiple casing strings using explosives
US5680905A (en) 1995-01-04 1997-10-28 Baker Hughes Incorporated Apparatus and method for perforating wellbores
US5477785A (en) 1995-01-27 1995-12-26 The Ensign-Bickford Company Well pipe perforating gun
US5540293A (en) 1995-02-21 1996-07-30 The Mohaupt Family Trust Firing Head
US5483895A (en) 1995-04-03 1996-01-16 Halliburton Company Detonation system for detonating explosive charges in well
US5531164A (en) 1995-05-10 1996-07-02 Titan Specialties, Inc. Select fire gun assembly and electronic module for underground jet perforating using resistive blasting caps
US5598894A (en) 1995-07-05 1997-02-04 Halliburton Company Select fire multiple drill string tester
US5715891A (en) 1995-09-27 1998-02-10 Natural Reserves Group, Inc. Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access
US5697445A (en) 1995-09-27 1997-12-16 Natural Reserves Group, Inc. Method and apparatus for selective horizontal well re-entry using retrievable diverter oriented by logging means
US5651415A (en) 1995-09-28 1997-07-29 Natural Reserves Group, Inc. System for selective re-entry to completed laterals
US5785130A (en) 1995-10-02 1998-07-28 Owen Oil Tools, Inc. High density perforating gun system
US5799732A (en) 1996-01-31 1998-09-01 Schlumberger Technology Corporation Small hole retrievable perforating system for use during extreme overbalanced perforating
GB2326462B (en) 1996-02-14 1999-09-15 Owen Oil Tools Inc System for producing high density extra large well perforations
US5730224A (en) 1996-02-29 1998-03-24 Halliburton Energy Services, Inc. Slidable access control device for subterranean lateral well drilling and completion
USH1598H (en) * 1996-03-01 1996-10-01 The United States Of America As Represented By The Secretary Of The Army Liquid propellant igniter
US5732773A (en) 1996-04-03 1998-03-31 Sonsub, Inc. Non-welded bore selector assembly
US5730221A (en) 1996-07-15 1998-03-24 Halliburton Energy Services, Inc Methods of completing a subterranean well
US5720344A (en) 1996-10-21 1998-02-24 Newman; Frederic M. Method of longitudinally splitting a pipe coupling within a wellbore
US5814758A (en) 1997-02-19 1998-09-29 Halliburton Energy Services, Inc. Apparatus for discharging a high speed jet to penetrate a target
US5829538A (en) 1997-03-10 1998-11-03 Owen Oil Tools, Inc. Full bore gun system and method

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WO1997021903A1 (en) 1997-06-19
DE69629584T2 (de) 2004-06-24
EP0866910A1 (en) 1998-09-30
US6024169A (en) 2000-02-15
NO981993L (no) 1998-06-09
US5791417A (en) 1998-08-11
CA2236570A1 (en) 1997-06-19
CA2236570C (en) 2004-11-16
DE69629584D1 (de) 2003-09-25
NO20023200L (no) 1998-06-09
EP1223304B1 (en) 2005-10-26
EP1223304A2 (en) 2002-07-17
NO20023200D0 (no) 2002-07-01
EP0866910B1 (en) 2003-08-20
NO313017B1 (no) 2002-07-29
AU1199497A (en) 1997-07-03
EP1223304A3 (en) 2004-01-28
NO328182B1 (no) 2009-12-28
AU720240B2 (en) 2000-05-25

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