CA2495985C - System and method for subterranean access - Google Patents

System and method for subterranean access Download PDF

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Publication number
CA2495985C
CA2495985C CA002495985A CA2495985A CA2495985C CA 2495985 C CA2495985 C CA 2495985C CA 002495985 A CA002495985 A CA 002495985A CA 2495985 A CA2495985 A CA 2495985A CA 2495985 C CA2495985 C CA 2495985C
Authority
CA
Canada
Prior art keywords
well bore
entry
slanted
well
subterranean zone
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 - Fee Related
Application number
CA002495985A
Other languages
English (en)
French (fr)
Other versions
CA2495985A1 (en
Inventor
Joseph A. Zupanick
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.)
CDX Gas LLC
Original Assignee
CDX Gas LLC
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 CDX Gas LLC filed Critical CDX Gas LLC
Publication of CA2495985A1 publication Critical patent/CA2495985A1/en
Application granted granted Critical
Publication of CA2495985C publication Critical patent/CA2495985C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/14—Obtaining from a multiple-zone well
    • 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
    • E21B43/006—Production of coal-bed methane
    • 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
    • E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
    • E21B43/305—Specific pattern of wells, e.g. optimising the spacing of wells comprising at least one inclined or horizontal well

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Earth Drilling (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
CA002495985A 2002-08-22 2003-08-21 System and method for subterranean access Expired - Fee Related CA2495985C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/227,057 US20040035582A1 (en) 2002-08-22 2002-08-22 System and method for subterranean access
US10/227,057 2002-08-22
PCT/US2003/026124 WO2004018835A2 (en) 2002-08-22 2003-08-21 System and method for subterranean access

Publications (2)

Publication Number Publication Date
CA2495985A1 CA2495985A1 (en) 2004-03-04
CA2495985C true CA2495985C (en) 2008-05-20

Family

ID=31887386

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002495985A Expired - Fee Related CA2495985C (en) 2002-08-22 2003-08-21 System and method for subterranean access

Country Status (6)

Country Link
US (1) US20040035582A1 (pl)
EP (1) EP1546505A2 (pl)
CN (1) CN100535383C (pl)
CA (1) CA2495985C (pl)
PL (1) PL201821B1 (pl)
WO (1) WO2004018835A2 (pl)

Families Citing this family (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7048049B2 (en) 2001-10-30 2006-05-23 Cdx Gas, Llc Slant entry well system and method
US8376052B2 (en) 1998-11-20 2013-02-19 Vitruvian Exploration, Llc Method and system for surface production of gas from a subterranean zone
US6662870B1 (en) * 2001-01-30 2003-12-16 Cdx Gas, L.L.C. Method and system for accessing subterranean deposits from a limited surface area
US8297377B2 (en) 1998-11-20 2012-10-30 Vitruvian Exploration, Llc Method and system for accessing subterranean deposits from the surface and tools therefor
US6280000B1 (en) 1998-11-20 2001-08-28 Joseph A. Zupanick Method for production of gas from a coal seam using intersecting well bores
US7025154B2 (en) * 1998-11-20 2006-04-11 Cdx Gas, Llc Method and system for circulating fluid in a well system
US6732796B2 (en) 2000-04-24 2004-05-11 Shell Oil Company In situ production of synthesis gas from a hydrocarbon containing formation, the synthesis gas having a selected H2 to CO ratio
US7011154B2 (en) 2000-04-24 2006-03-14 Shell Oil Company In situ recovery from a kerogen and liquid hydrocarbon containing formation
US6923275B2 (en) * 2001-01-29 2005-08-02 Robert Gardes Multi seam coal bed/methane dewatering and depressurizing production system
US7243738B2 (en) * 2001-01-29 2007-07-17 Robert Gardes Multi seam coal bed/methane dewatering and depressurizing production system
EP1381749B1 (en) 2001-04-24 2008-01-23 Shell Internationale Researchmaatschappij B.V. Method for in situ recovery from a tar sands formation and a blending agent produced by such a method
US20030146002A1 (en) 2001-04-24 2003-08-07 Vinegar Harold J. Removable heat sources for in situ thermal processing of an oil shale formation
US7090013B2 (en) 2001-10-24 2006-08-15 Shell Oil Company In situ thermal processing of a hydrocarbon containing formation to produce heated fluids
US7165615B2 (en) 2001-10-24 2007-01-23 Shell Oil Company In situ recovery from a hydrocarbon containing formation using conductor-in-conduit heat sources with an electrically conductive material in the overburden
US7077199B2 (en) 2001-10-24 2006-07-18 Shell Oil Company In situ thermal processing of an oil reservoir formation
US7104319B2 (en) 2001-10-24 2006-09-12 Shell Oil Company In situ thermal processing of a heavy oil diatomite formation
AU2002353887B2 (en) 2001-10-24 2007-08-30 Shell Internationale Research Maatschappij B.V. In situ upgrading of coal
US7360595B2 (en) * 2002-05-08 2008-04-22 Cdx Gas, Llc Method and system for underground treatment of materials
US6991047B2 (en) * 2002-07-12 2006-01-31 Cdx Gas, Llc Wellbore sealing system and method
US7025137B2 (en) * 2002-09-12 2006-04-11 Cdx Gas, Llc Three-dimensional well system for accessing subterranean zones
WO2004038175A1 (en) 2002-10-24 2004-05-06 Shell Internationale Research Maatschappij B.V. Inhibiting wellbore deformation during in situ thermal processing of a hydrocarbon containing formation
US7264048B2 (en) * 2003-04-21 2007-09-04 Cdx Gas, Llc Slot cavity
NZ543753A (en) * 2003-04-24 2008-11-28 Shell Int Research Thermal processes for subsurface formations
US20060201714A1 (en) * 2003-11-26 2006-09-14 Seams Douglas P Well bore cleaning
US20060201715A1 (en) * 2003-11-26 2006-09-14 Seams Douglas P Drilling normally to sub-normally pressured formations
US7419223B2 (en) * 2003-11-26 2008-09-02 Cdx Gas, Llc System and method for enhancing permeability of a subterranean zone at a horizontal well bore
US7222670B2 (en) * 2004-02-27 2007-05-29 Cdx Gas, Llc System and method for multiple wells from a common surface location
DE602005011115D1 (de) 2004-04-23 2009-01-02 Shell Int Research Zur erwärmung von unterirdischen formationen verwendete temperaturbegrenzte heizvorrichtungen
US7278497B2 (en) * 2004-07-09 2007-10-09 Weatherford/Lamb Method for extracting coal bed methane with source fluid injection
US7353877B2 (en) * 2004-12-21 2008-04-08 Cdx Gas, Llc Accessing subterranean resources by formation collapse
US7225872B2 (en) * 2004-12-21 2007-06-05 Cdx Gas, Llc Perforating tubulars
US7311150B2 (en) * 2004-12-21 2007-12-25 Cdx Gas, Llc Method and system for cleaning a well bore
US7299864B2 (en) * 2004-12-22 2007-11-27 Cdx Gas, Llc Adjustable window liner
US7373984B2 (en) 2004-12-22 2008-05-20 Cdx Gas, Llc Lining well bore junctions
GB2439028B (en) 2005-04-22 2009-02-25 Shell Int Research Systems and processes for use in treating subsurface formations
US7571771B2 (en) * 2005-05-31 2009-08-11 Cdx Gas, Llc Cavity well system
EA014215B1 (ru) 2005-10-24 2010-10-29 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Ограниченный по температуре нагреватель с трубопроводом, по существу, электрически изолированным от пласта
EP2100004A4 (en) 2006-04-21 2015-10-21 Shell Int Research HIGH STRENGTH ALLOYS
CA2653731A1 (en) * 2006-06-28 2008-01-03 Richard E. Scallen Dewatering apparatus
US7562707B2 (en) 2006-10-20 2009-07-21 Shell Oil Company Heating hydrocarbon containing formations in a line drive staged process
AU2008242805B2 (en) 2007-04-20 2012-01-19 Shell Internationale Research Maatschappij B.V. In situ heat treatment of a tar sands formation after drive process treatment
JP5147945B2 (ja) * 2007-08-23 2013-02-20 シュルンベルジェ ホールディングス リミテッド 小径側孔を用いた坑井構築
WO2009052047A1 (en) 2007-10-19 2009-04-23 Shell Oil Company Three-phase heaters with common overburden sections for heating subsurface formations
JP5566371B2 (ja) 2008-04-18 2014-08-06 シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ 地表下炭化水素含有地層を処理するための鉱坑及びトンネルの使用
WO2010045098A1 (en) 2008-10-13 2010-04-22 Shell Oil Company Circulated heated transfer fluid systems used to treat a subsurface formation
US8448707B2 (en) 2009-04-10 2013-05-28 Shell Oil Company Non-conducting heater casings
CA2713703C (en) * 2009-09-24 2013-06-25 Conocophillips Company A fishbone well configuration for in situ combustion
US8833453B2 (en) 2010-04-09 2014-09-16 Shell Oil Company Electrodes for electrical current flow heating of subsurface formations with tapered copper thickness
US9033042B2 (en) 2010-04-09 2015-05-19 Shell Oil Company Forming bitumen barriers in subsurface hydrocarbon formations
US8631866B2 (en) 2010-04-09 2014-01-21 Shell Oil Company Leak detection in circulated fluid systems for heating subsurface formations
US9127538B2 (en) 2010-04-09 2015-09-08 Shell Oil Company Methodologies for treatment of hydrocarbon formations using staged pyrolyzation
RU2439273C1 (ru) * 2011-03-16 2012-01-10 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Способ строительства куста скважин
US9016370B2 (en) 2011-04-08 2015-04-28 Shell Oil Company Partial solution mining of hydrocarbon containing layers prior to in situ heat treatment
BR112014016639A8 (pt) * 2012-02-14 2017-07-04 Halliburton Energy Services Inc método de levantamento com ondas de cisalhamento sísmicas, e, sistema de levantamento de onda de cisalhamento
US20140076530A1 (en) * 2012-09-18 2014-03-20 Alejandro Augusto Alvarez De Toledo Facility with wells having multiple horizontal galleries for lowering water tables
US20140227035A1 (en) * 2013-02-12 2014-08-14 Chesapeake Operating, Inc. Well pad drain and containment recovery system
CN103161440A (zh) * 2013-02-27 2013-06-19 中联煤层气国家工程研究中心有限责任公司 一种单井眼煤层气水平井系统及其完成方法
CA2852358C (en) 2013-05-20 2021-09-07 Robert Gardes Continuous circulating concentric casing managed equivalent circulating density (ecd) drilling for methane gas recovery from coal seams
RU2019115037A (ru) * 2016-10-26 2020-11-27 Джимми Линн ДЭВИС Способ бурения вертикальных и горизонтальных путей к месту добычи твердых природных ресурсов
CN108590595B (zh) * 2018-04-10 2020-04-21 广东石油化工学院 一种利用f型井组开采非成岩型天然气水合物的方法

Family Cites Families (103)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US422611A (en) * 1890-03-04 Band twisting machine
US177961A (en) * 1876-05-30 Improvement in the treatment of plow mold-boards
US1089184A (en) * 1913-09-18 1914-03-03 Robert H Bolen Mold for forming sunken concrete structures.
US1485615A (en) * 1920-12-08 1924-03-04 Arthur S Jones Oil-well reamer
US2069481A (en) * 1935-03-25 1937-02-02 Richard A Rott Refrigerated truck
US2150228A (en) * 1936-08-31 1939-03-14 Luther F Lamb Packer
US2783018A (en) * 1955-02-11 1957-02-26 Vac U Lift Company Valve means for suction lifting devices
US2934904A (en) * 1955-09-01 1960-05-03 Phillips Petroleum Co Dual storage caverns
US2980142A (en) * 1958-09-08 1961-04-18 Turak Anthony Plural dispensing valve
US3385382A (en) * 1964-07-08 1968-05-28 Otis Eng Co Method and apparatus for transporting fluids
US3443648A (en) * 1967-09-13 1969-05-13 Fenix & Scisson Inc Earth formation underreamer
US3809519A (en) * 1967-12-15 1974-05-07 Ici Ltd Injection moulding machines
US3578077A (en) * 1968-05-27 1971-05-11 Mobil Oil Corp Flow control system and method
US3503377A (en) * 1968-07-30 1970-03-31 Gen Motors Corp Control valve
USRE32623E (en) * 1970-09-08 1988-03-15 Shell Oil Company Curved offshore well conductors
US3687204A (en) * 1970-09-08 1972-08-29 Shell Oil Co Curved offshore well conductors
US3800830A (en) * 1973-01-11 1974-04-02 B Etter Metering valve
US3874413A (en) * 1973-04-09 1975-04-01 Vals Construction Multiported valve
US4022279A (en) * 1974-07-09 1977-05-10 Driver W B Formation conditioning process and system
US3934649A (en) * 1974-07-25 1976-01-27 The United States Of America As Represented By The United States Energy Research And Development Administration Method for removal of methane from coalbeds
US3957082A (en) * 1974-09-26 1976-05-18 Arbrook, Inc. Six-way stopcock
SE386500B (sv) * 1974-11-25 1976-08-09 Sjumek Sjukvardsmek Hb Gasblandningsventil
US4020901A (en) * 1976-01-19 1977-05-03 Chevron Research Company Arrangement for recovering viscous petroleum from thick tar sand
US4073351A (en) * 1976-06-10 1978-02-14 Pei, Inc. Burners for flame jet drill
US4089374A (en) * 1976-12-16 1978-05-16 In Situ Technology, Inc. Producing methane from coal in situ
US4136996A (en) * 1977-05-23 1979-01-30 Texaco Development Corporation Directional drilling marine structure
US4151880A (en) * 1977-10-17 1979-05-01 Peabody Vann Vent assembly
US4156437A (en) * 1978-02-21 1979-05-29 The Perkin-Elmer Corporation Computer controllable multi-port valve
US4182423A (en) * 1978-03-02 1980-01-08 Burton/Hawks Inc. Whipstock and method for directional well drilling
US4257650A (en) * 1978-09-07 1981-03-24 Barber Heavy Oil Process, Inc. Method for recovering subsurface earth substances
US4366988A (en) * 1979-02-16 1983-01-04 Bodine Albert G Sonic apparatus and method for slurry well bore mining and production
US4312377A (en) * 1979-08-29 1982-01-26 Teledyne Adams, A Division Of Teledyne Isotopes, Inc. Tubular valve device and method of assembly
US4317492A (en) * 1980-02-26 1982-03-02 The Curators Of The University Of Missouri Method and apparatus for drilling horizontal holes in geological structures from a vertical bore
US4328577A (en) * 1980-06-03 1982-05-04 Rockwell International Corporation Muldem automatically adjusting to system expansion and contraction
US4372398A (en) * 1980-11-04 1983-02-08 Cornell Research Foundation, Inc. Method of determining the location of a deep-well casing by magnetic field sensing
US4442896A (en) * 1982-07-21 1984-04-17 Reale Lucio V Treatment of underground beds
FR2545006B1 (fr) * 1983-04-27 1985-08-16 Mancel Patrick Dispositif pour pulveriser des produits, notamment des peintures
US4502733A (en) * 1983-06-08 1985-03-05 Tetra Systems, Inc. Oil mining configuration
US4512422A (en) * 1983-06-28 1985-04-23 Rondel Knisley Apparatus for drilling oil and gas wells and a torque arrestor associated therewith
US4494616A (en) * 1983-07-18 1985-01-22 Mckee George B Apparatus and methods for the aeration of cesspools
CA1210992A (en) * 1983-07-28 1986-09-09 Quentin Siebold Off-vertical pumping unit
FR2551491B1 (fr) * 1983-08-31 1986-02-28 Elf Aquitaine Dispositif de forage et de mise en production petroliere multidrains
US4565152A (en) * 1983-12-19 1986-01-21 Bennett Charles O Safety flag
US4519463A (en) * 1984-03-19 1985-05-28 Atlantic Richfield Company Drainhole drilling
US4646836A (en) * 1984-08-03 1987-03-03 Hydril Company Tertiary recovery method using inverted deviated holes
US4773488A (en) * 1984-08-08 1988-09-27 Atlantic Richfield Company Development well drilling
US4651836A (en) * 1986-04-01 1987-03-24 Methane Drainage Ventures Process for recovering methane gas from subterranean coalseams
US4662440A (en) * 1986-06-20 1987-05-05 Conoco Inc. Methods for obtaining well-to-well flow communication
US4718485A (en) * 1986-10-02 1988-01-12 Texaco Inc. Patterns having horizontal and vertical wells
US4727937A (en) * 1986-10-02 1988-03-01 Texaco Inc. Steamflood process employing horizontal and vertical wells
US4889199A (en) * 1987-05-27 1989-12-26 Lee Paul B Downhole valve for use when drilling an oil or gas well
CA2009782A1 (en) * 1990-02-12 1991-08-12 Anoosh I. Kiamanesh In-situ tuned microwave oil extraction process
NL9000426A (nl) * 1990-02-22 1991-09-16 Maria Johanna Francien Voskamp Werkwijze en stelsel voor ondergrondse vergassing van steen- of bruinkool.
US5194859A (en) * 1990-06-15 1993-03-16 Amoco Corporation Apparatus and method for positioning a tool in a deviated section of a borehole
US5197783A (en) * 1991-04-29 1993-03-30 Esso Resources Canada Ltd. Extendable/erectable arm assembly and method of borehole mining
US5193620A (en) * 1991-08-05 1993-03-16 Tiw Corporation Whipstock setting method and apparatus
US5197553A (en) * 1991-08-14 1993-03-30 Atlantic Richfield Company Drilling with casing and retrievable drill bit
US5199496A (en) * 1991-10-18 1993-04-06 Texaco, Inc. Subsea pumping device incorporating a wellhead aspirator
US5201817A (en) * 1991-12-27 1993-04-13 Hailey Charles D Downhole cutting tool
US5289888A (en) * 1992-05-26 1994-03-01 Rrkt Company Water well completion method
US5301760C1 (en) * 1992-09-10 2002-06-11 Natural Reserve Group Inc Completing horizontal drain holes from a vertical well
US5485089A (en) * 1992-11-06 1996-01-16 Vector Magnetics, Inc. Method and apparatus for measuring distance and direction by movable magnetic field source
US5402851A (en) * 1993-05-03 1995-04-04 Baiton; Nick Horizontal drilling method for hydrocarbon recovery
US5394950A (en) * 1993-05-21 1995-03-07 Gardes; Robert A. Method of drilling multiple radial wells using multiple string downhole orientation
US5727629A (en) * 1996-01-24 1998-03-17 Weatherford/Lamb, Inc. Wellbore milling guide and method
US5385205A (en) * 1993-10-04 1995-01-31 Hailey; Charles D. Dual mode rotary cutting tool
US5494121A (en) * 1994-04-28 1996-02-27 Nackerud; Alan L. Cavern well completion method and apparatus
US5564503A (en) * 1994-08-26 1996-10-15 Halliburton Company Methods and systems for subterranean multilateral well drilling and completion
US5501273A (en) * 1994-10-04 1996-03-26 Amoco Corporation Method for determining the reservoir properties of a solid carbonaceous subterranean formation
US5540282A (en) * 1994-10-21 1996-07-30 Dallas; L. Murray Apparatus and method for completing/recompleting production wells
US5501279A (en) * 1995-01-12 1996-03-26 Amoco Corporation Apparatus and method for removing production-inhibiting liquid from a wellbore
US5732776A (en) * 1995-02-09 1998-03-31 Baker Hughes Incorporated Downhole production well control system and method
US5868210A (en) * 1995-03-27 1999-02-09 Baker Hughes Incorporated Multi-lateral wellbore systems and methods for forming same
US5706871A (en) * 1995-08-15 1998-01-13 Dresser Industries, Inc. Fluid control apparatus and method
US5785133A (en) * 1995-08-29 1998-07-28 Tiw Corporation Multiple lateral hydrocarbon recovery system and method
US5720356A (en) * 1996-02-01 1998-02-24 Gardes; Robert Method and system for drilling underbalanced radial wells utilizing a dual string technique in a live well
US6056059A (en) * 1996-03-11 2000-05-02 Schlumberger Technology Corporation Apparatus and method for establishing branch wells from a parent well
US5944107A (en) * 1996-03-11 1999-08-31 Schlumberger Technology Corporation Method and apparatus for establishing branch wells at a node of a parent well
US5879057A (en) * 1996-11-12 1999-03-09 Amvest Corporation Horizontal remote mining system, and method
US5863283A (en) * 1997-02-10 1999-01-26 Gardes; Robert System and process for disposing of nuclear and other hazardous wastes in boreholes
US5884704A (en) * 1997-02-13 1999-03-23 Halliburton Energy Services, Inc. Methods of completing a subterranean well and associated apparatus
US6019173A (en) * 1997-04-04 2000-02-01 Dresser Industries, Inc. Multilateral whipstock and tools for installing and retrieving
US6030048A (en) * 1997-05-07 2000-02-29 Tarim Associates For Scientific Mineral And Oil Exploration Ag. In-situ chemical reactor for recovery of metals or purification of salts
US20020043404A1 (en) * 1997-06-06 2002-04-18 Robert Trueman Erectable arm assembly for use in boreholes
US5868202A (en) * 1997-09-22 1999-02-09 Tarim Associates For Scientific Mineral And Oil Exploration Ag Hydrologic cells for recovery of hydrocarbons or thermal energy from coal, oil-shale, tar-sands and oil-bearing formations
US6050335A (en) * 1997-10-31 2000-04-18 Shell Oil Company In-situ production of bitumen
US6012320A (en) * 1998-01-14 2000-01-11 Oxford Suspension, Inc. Leaf spring straightening apparatus
US6024171A (en) * 1998-03-12 2000-02-15 Vastar Resources, Inc. Method for stimulating a wellbore penetrating a solid carbonaceous subterranean formation
US6135208A (en) * 1998-05-28 2000-10-24 Halliburton Energy Services, Inc. Expandable wellbore junction
US6681855B2 (en) * 2001-10-19 2004-01-27 Cdx Gas, L.L.C. Method and system for management of by-products from subterranean zones
US7025154B2 (en) * 1998-11-20 2006-04-11 Cdx Gas, Llc Method and system for circulating fluid in a well system
US6598686B1 (en) * 1998-11-20 2003-07-29 Cdx Gas, Llc Method and system for enhanced access to a subterranean zone
US6679322B1 (en) * 1998-11-20 2004-01-20 Cdx Gas, Llc Method and system for accessing subterranean deposits from the surface
US6425448B1 (en) * 2001-01-30 2002-07-30 Cdx Gas, L.L.P. Method and system for accessing subterranean zones from a limited surface area
US6662870B1 (en) * 2001-01-30 2003-12-16 Cdx Gas, L.L.C. Method and system for accessing subterranean deposits from a limited surface area
US6280000B1 (en) * 1998-11-20 2001-08-28 Joseph A. Zupanick Method for production of gas from a coal seam using intersecting well bores
US6199633B1 (en) * 1999-08-27 2001-03-13 James R. Longbottom Method and apparatus for intersecting downhole wellbore casings
WO2002034931A2 (en) * 2000-10-26 2002-05-02 Guyer Joe E Method of generating and recovering gas from subsurface formations of coal, carbonaceous shale and organic-rich shales
US6722452B1 (en) * 2002-02-19 2004-04-20 Cdx Gas, Llc Pantograph underreamer
US6976547B2 (en) * 2002-07-16 2005-12-20 Cdx Gas, Llc Actuator underreamer
US7025137B2 (en) * 2002-09-12 2006-04-11 Cdx Gas, Llc Three-dimensional well system for accessing subterranean zones
US8333245B2 (en) * 2002-09-17 2012-12-18 Vitruvian Exploration, Llc Accelerated production of gas from a subterranean zone
US6860147B2 (en) * 2002-09-30 2005-03-01 Alberta Research Council Inc. Process for predicting porosity and permeability of a coal bed

Also Published As

Publication number Publication date
PL201821B1 (pl) 2009-05-29
PL375351A1 (pl) 2005-11-28
US20040035582A1 (en) 2004-02-26
WO2004018835A3 (en) 2004-03-25
EP1546505A2 (en) 2005-06-29
CN100535383C (zh) 2009-09-02
WO2004018835A2 (en) 2004-03-04
CN1685131A (zh) 2005-10-19
AU2003265549A1 (en) 2004-03-11
CA2495985A1 (en) 2004-03-04

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