WO2009076183A3 - Apparatus and system for well placement and reservoir characterization - Google Patents

Apparatus and system for well placement and reservoir characterization Download PDF

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Publication number
WO2009076183A3
WO2009076183A3 PCT/US2008/085627 US2008085627W WO2009076183A3 WO 2009076183 A3 WO2009076183 A3 WO 2009076183A3 US 2008085627 W US2008085627 W US 2008085627W WO 2009076183 A3 WO2009076183 A3 WO 2009076183A3
Authority
WO
WIPO (PCT)
Prior art keywords
module
drill string
antennas
well placement
reservoir characterization
Prior art date
Application number
PCT/US2008/085627
Other languages
French (fr)
Other versions
WO2009076183A2 (en
Inventor
Jean Seydoux
Emmanuel Legendre
Reza Taherian
Original Assignee
Schlumberger Canada Limited
Schlumberger Technology B.V.
Prad Research And Development Limited
Services Petroliers Schlumberger
Schlumberger Holdings Limited
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 Schlumberger Canada Limited, Schlumberger Technology B.V., Prad Research And Development Limited, Services Petroliers Schlumberger, Schlumberger Holdings Limited filed Critical Schlumberger Canada Limited
Priority to RU2010128063/28A priority Critical patent/RU2502094C2/en
Priority to BRPI0819891A priority patent/BRPI0819891A2/en
Priority to CN200880119520.7A priority patent/CN101918863B/en
Priority to EP08860652A priority patent/EP2223164A2/en
Priority to CA2707040A priority patent/CA2707040A1/en
Priority to MX2010006094A priority patent/MX2010006094A/en
Publication of WO2009076183A2 publication Critical patent/WO2009076183A2/en
Publication of WO2009076183A3 publication Critical patent/WO2009076183A3/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/18Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
    • G01V3/26Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
    • G01V3/28Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device using induction coils

Abstract

A modular downhole apparatus to determine a formation property, the apparatus being incorporated into a drill string (16, 14) comprising one or more downhole tools (27, 28, 29, 30) and drill pipe, the drill pipe being of the same or various lengths, the modular downhole apparatus comprising a first module (21, 22, 23, 24, 25) having one or more antennas, wherein the first module has connectors on both ends adapted to connect with the drill string,- and a second module (25) having one or more antennas, wherein the second module has connectors on both ends adapted to connect with the drill string,- wherein the first module and the second module are spaced apart on the drill string; and wherein one or more of the one or more antennas of one or both of the modules has a dipole moment that is tilted or transverse.
PCT/US2008/085627 2007-12-07 2008-12-05 Apparatus and system for well placement and reservoir characterization WO2009076183A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
RU2010128063/28A RU2502094C2 (en) 2007-12-07 2008-12-05 Unit and system for geological accompaniment of well drilling and determination of manifold characteristics
BRPI0819891A BRPI0819891A2 (en) 2007-12-07 2008-12-05 modular well apparatus for determining a formation property, and method for determining a formation property
CN200880119520.7A CN101918863B (en) 2007-12-07 2008-12-05 Apparatus and system for well placement and reservoir characterization
EP08860652A EP2223164A2 (en) 2007-12-07 2008-12-05 Apparatus and system for well placement and reservoir characterization
CA2707040A CA2707040A1 (en) 2007-12-07 2008-12-05 Apparatus and system for well placement and reservoir characterization
MX2010006094A MX2010006094A (en) 2007-12-07 2008-12-05 Apparatus and system for well placement and reservoir characterization.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/952,302 2007-12-07
US11/952,302 US7755361B2 (en) 2004-07-14 2007-12-07 Apparatus and system for well placement and reservoir characterization

Publications (2)

Publication Number Publication Date
WO2009076183A2 WO2009076183A2 (en) 2009-06-18
WO2009076183A3 true WO2009076183A3 (en) 2009-12-17

Family

ID=40756204

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/085627 WO2009076183A2 (en) 2007-12-07 2008-12-05 Apparatus and system for well placement and reservoir characterization

Country Status (9)

Country Link
US (1) US7755361B2 (en)
EP (1) EP2223164A2 (en)
CN (1) CN101918863B (en)
BR (1) BRPI0819891A2 (en)
CA (1) CA2707040A1 (en)
MX (1) MX2010006094A (en)
NO (1) NO20100855L (en)
RU (1) RU2502094C2 (en)
WO (1) WO2009076183A2 (en)

Families Citing this family (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6163155A (en) * 1999-01-28 2000-12-19 Dresser Industries, Inc. Electromagnetic wave resistivity tool having a tilted antenna for determining the horizontal and vertical resistivities and relative dip angle in anisotropic earth formations
US7659722B2 (en) 1999-01-28 2010-02-09 Halliburton Energy Services, Inc. Method for azimuthal resistivity measurement and bed boundary detection
US7786733B2 (en) * 2004-07-14 2010-08-31 Schlumberger Technology Corporation Apparatus and system for well placement and reservoir characterization
US8736270B2 (en) 2004-07-14 2014-05-27 Schlumberger Technology Corporation Look ahead logging system
KR20090055553A (en) 2006-07-11 2009-06-02 핼리버튼 에너지 서비시즈 인코퍼레이티드 Modular geosteering tool assembly
WO2008008346A2 (en) * 2006-07-12 2008-01-17 Halliburton Energy Services, Inc. Method and apparatus for building a tilted antenna
US8593147B2 (en) 2006-08-08 2013-11-26 Halliburton Energy Services, Inc. Resistivity logging with reduced dip artifacts
US8274289B2 (en) * 2006-12-15 2012-09-25 Halliburton Energy Services, Inc. Antenna coupling component measurement tool having rotating antenna configuration
AU2007349251B2 (en) * 2007-03-16 2011-02-24 Halliburton Energy Services, Inc. Robust inversion systems and methods for azimuthally sensitive resistivity logging tools
US8049508B2 (en) * 2007-03-16 2011-11-01 Baker Hughes Incorporated Method and apparatus for determining formation boundary near the bit for conductive mud
CA2680869C (en) 2008-01-18 2011-07-12 Halliburton Energy Services, Inc. Em-guided drilling relative to an existing borehole
US8326539B2 (en) * 2008-05-08 2012-12-04 Schlumberger Technology Corporation Characterizing at least one property of a liner that lines a well
GB2473591B (en) * 2008-07-10 2013-02-27 Schlumberger Holdings System and method for generating true depth seismic surveys
US7991555B2 (en) * 2008-07-30 2011-08-02 Schlumberger Technology Corporation Electromagnetic directional measurements for non-parallel bed formations
US20110291855A1 (en) * 2008-10-01 2011-12-01 Homan Dean M Logging tool with antennas having equal tilt angles
CN102439260A (en) 2008-12-16 2012-05-02 哈利伯顿能源服务公司 Azimuthal at-bit resistivity and geosteering methods and systems
US8368403B2 (en) 2009-05-04 2013-02-05 Schlumberger Technology Corporation Logging tool having shielded triaxial antennas
US9134449B2 (en) * 2009-05-04 2015-09-15 Schlumberger Technology Corporation Directional resistivity measurement for well placement and formation evaluation
US8497673B2 (en) * 2009-09-28 2013-07-30 Schlumberger Technology Corporation Directional resistivity antenna shield
US8466682B2 (en) * 2009-09-29 2013-06-18 Schlumberger Technology Corporation Apparatus and method for downhole electromagnetic measurement while drilling
AU2010310816B2 (en) 2009-10-20 2016-01-28 Schlumberger Technology B.V. Methods for characterization of formations, navigating drill paths, and placing wells in earth boreholes
BRPI1013305B1 (en) 2010-01-22 2019-09-10 Halliburton Energy Services Inc system for measuring resistivity of a formation, method for determining resistivity, and instrumented drill bit
CA2797683A1 (en) * 2010-04-29 2011-11-10 Schlumberger Canada Limited Gain-corrected measurements
US9933541B2 (en) * 2010-06-22 2018-04-03 Schlumberger Technology Corporation Determining resistivity anisotropy and formation structure for vertical wellbore sections
US9360582B2 (en) * 2010-07-02 2016-06-07 Halliburton Energy Services, Inc. Correcting for magnetic interference in azimuthal tool measurements
US8417455B2 (en) * 2010-12-22 2013-04-09 Schlumberger Technology Corporation Triaxial antenna electromagnetic measurements
MX352809B (en) 2011-08-03 2017-12-08 Halliburton Energy Services Inc Apparatus and method of landing a well in a target zone.
MX358888B (en) * 2011-08-18 2018-08-28 Halliburton Energy Serv Inc Improved casing detection tools and methods.
CN104285033A (en) * 2011-11-15 2015-01-14 哈利伯顿能源服务公司 Enhanced resistivity measurement apparatus, methods, and systems
CN105672999B (en) * 2011-11-15 2019-09-17 哈里伯顿能源服务公司 The prediction prediction of drill bit application
BR112014011728A2 (en) * 2011-11-15 2017-05-09 Halliburton Energy Services Inc method and apparatus of operation, and machine readable storage device
US8862405B2 (en) * 2011-12-06 2014-10-14 Schlumberger Technology Corporation System and method for producing look-ahead profile measurements in a drilling operation
US10073189B2 (en) 2012-02-17 2018-09-11 Schlumberger Technology Corporation Inversion-based calibration of downhole electromagnetic tools
US9618646B2 (en) 2012-02-21 2017-04-11 Bakery Hughes Incorporated Acoustic synchronization system, assembly, and method
US9540922B2 (en) * 2012-03-29 2017-01-10 Schlumberger Technology Corporation Electromagnetic method for obtaining dip azimuth angle
CN102678102B (en) * 2012-03-31 2015-02-25 中国石油大学(华东) Array electric imaging logging based reservoir oil-water identification method and system
MX342269B (en) 2012-06-25 2016-09-22 Halliburton Energy Services Inc Tilted antenna logging systems and methods yielding robust measurement signals.
EP2850461B1 (en) * 2012-06-28 2021-07-07 Halliburton Energy Services Inc. Measurement calibration apparatus, methods, and systems
EP2888443B1 (en) * 2012-08-21 2019-04-10 Halliburton Energy Services, Inc. Turbine drilling assembly with near drill bit sensors
CN103869267A (en) * 2012-12-12 2014-06-18 上海精密计量测试研究所 Optical pumping magnetic measuring device
EP2839316A4 (en) * 2012-12-18 2015-06-24 Halliburton Energy Services Inc Methods and apparatus to acquire compensated signals for determination of formation parameters
EP2926080A4 (en) * 2013-03-15 2016-07-06 Halliburton Energy Services Inc Identifying unconventional formations
US10168447B2 (en) * 2013-03-27 2019-01-01 Schlumberger Technology Corporation Automatic geosteering and evolutionary algorithm for use with same
BR112015024544A2 (en) * 2013-05-07 2017-07-18 Halliburton Energy Services Inc system and method for providing compensated geological measurements
DE112013007397T5 (en) * 2013-09-03 2016-05-25 Halliburton Energy Services, Inc. Annular connection for speed measurement
US20150268372A1 (en) * 2014-03-20 2015-09-24 Schlumberger Technology Corporation Method and apparatus for determining formation properties using collocated triaxial antennas with non-planar sinusoidal coils
US9423525B2 (en) 2014-03-29 2016-08-23 Schlumberger Technology Corporation Gain compensated directional propagation measurements
US9581721B2 (en) * 2014-03-29 2017-02-28 Schlumberger Technology Corporation Method for making downhole electromagnetic logging while drilling measurements
US9797236B2 (en) * 2014-06-16 2017-10-24 Weatherford Technology Holdings, Llc Logging while drilling electrical imager and method for measurement in oil based mud
US10031153B2 (en) * 2014-06-27 2018-07-24 Schlumberger Technology Corporation Magnetic ranging to an AC source while rotating
US10094850B2 (en) * 2014-06-27 2018-10-09 Schlumberger Technology Corporation Magnetic ranging while rotating
EP3143250A4 (en) * 2014-07-11 2018-01-10 Halliburton Energy Services, Inc. Casing defect determination using stored defect response information
US9618647B2 (en) 2014-10-27 2017-04-11 Schlumberger Technology Corporation Gain compensated symmetrized and anti-symmetrized angles
WO2016144457A1 (en) * 2015-03-10 2016-09-15 Duke University Electromagnetic (em) well logging tools and related methods
RU2668602C1 (en) * 2015-03-30 2018-10-02 Шлюмберже Текнолоджи Б.В. Determination of parameters of bottomhole fracture part of fracture with use of electromagnetic welding of bottomhole fracture part of fracture filled with conductive proppant
EP3337951B1 (en) 2015-10-26 2023-11-29 Halliburton Energy Services, Inc. Frequency ratiometric processing of resistivity logging tool data
BR112018008755B1 (en) 2015-10-30 2022-11-08 Schlumberger Technology B.V METHOD AND SYSTEM FOR CHARACTERIZING AN UNDERGROUND FORMATION
WO2017196696A1 (en) 2016-05-08 2017-11-16 Schlumberger Technology Corporation Methods and systems employing look-around and look-ahead inversion of downhole measurements
US10161245B2 (en) 2016-05-17 2018-12-25 Saudi Arabian Oil Company Anisotropy and dip angle determination using electromagnetic (EM) impulses from tilted antennas
RU2756409C2 (en) * 2016-08-15 2021-09-30 Олиден Текнолоджи, Ллс Determination of total tensor of electromagnetic coupling using set of antennas
US10132953B2 (en) 2016-08-26 2018-11-20 Baker Hughes, A Ge Company, Llc Electromagnetic wave propagation measurements without synchronization
AU2016425805A1 (en) 2016-10-04 2019-03-14 Halliburton Energy Services, Inc. Tunable dipole moment for formation measurements
US10215876B2 (en) * 2016-10-06 2019-02-26 Saudi Arabian Oil Company Cation exchange capacity and water saturation from array induction data
CA3053889C (en) * 2017-05-08 2023-04-25 Halliburton Energy Services, Inc. Inversion processing of well log data
CN110352288B (en) * 2017-06-02 2023-09-05 哈利伯顿能源服务公司 Signal processing of multi-nipple rotary resistivity logging tool
CA3065102C (en) 2017-07-20 2022-05-31 Halliburton Energy Services, Inc. Dipole modeling for electric and/or magnetic fields
CN110649361A (en) * 2019-08-16 2020-01-03 中国石油天然气集团有限公司 Dielectric scanning antenna mounting structure

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6181138B1 (en) * 1999-02-22 2001-01-30 Halliburton Energy Services, Inc. Directional resistivity measurements for azimuthal proximity detection of bed boundaries
US20030085707A1 (en) * 2001-09-26 2003-05-08 Minerbo Gerald N Directional electromagnetic measurements insensitive to dip and anisotropy
US20050140373A1 (en) * 2003-05-22 2005-06-30 Schlumberger Technology Corporation Directional electromagnetic wave resistivity apparatus and method
US20060011385A1 (en) * 2004-07-14 2006-01-19 Schlumberger Technology Corporation Apparatus and system for well placement and reservoir characterization
US6998844B2 (en) * 2002-04-19 2006-02-14 Schlumberger Technology Corporation Propagation based electromagnetic measurement of anisotropy using transverse or tilted magnetic dipoles
US20060033502A1 (en) * 1999-01-28 2006-02-16 Bittar Michael S Electromagnetic wave resistivity tool having a tilted antenna for geosteering within a desired payzone
WO2008008386A2 (en) * 2006-07-11 2008-01-17 Halliburton Energy Services, Inc. Modular geosteering tool assembly
WO2009009342A1 (en) * 2007-07-10 2009-01-15 Schlumberger Canada Limited Determining formation parameters using electromagnetic coupling components

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012009A3 (en) 1978-11-30 1980-12-10 Brian Lance Gilmour Two-part food container
SU817648A1 (en) 1979-05-10 1981-03-30 Московский Ордена Трудового Крас-Ного Знамени Геологоразведочныйинститут Им. C.Орджоникидзе Probe for electromagnetic logging of wells
SU960701A1 (en) 1981-04-30 1982-09-23 Всесоюзный научно-исследовательский институт нефтепромысловой геофизики Device for electromagnetic well-logging
SU1004940A1 (en) 1981-05-06 1983-03-15 Институт геологии и геофизики СО АН СССР Device for logging-type electromagnetic probing
SU998995A1 (en) 1981-09-11 1983-02-23 Всесоюзный научно-исследовательский институт нефтепромысловой геофизики Electromagnetic well-logging method
US4739325A (en) * 1982-09-30 1988-04-19 Macleod Laboratories, Inc. Apparatus and method for down-hole EM telemetry while drilling
SU1246035A1 (en) 1985-02-05 1986-07-23 Отделение Экспериментальных Исследований Центрального Научно-Исследовательского Геологоразведочного Института Equipment for geoelectric surveying
US5157605A (en) 1987-04-27 1992-10-20 Schlumberger Technology Corporation Induction logging method and apparatus including means for combining on-phase and quadrature components of signals received at varying frequencies and including use of multiple receiver means associated with a single transmitter
US5175605A (en) * 1990-02-05 1992-12-29 Rockwell International Corporation Single event upset hardening circuits, devices and methods
US5117927A (en) * 1991-02-01 1992-06-02 Anadrill Downhole adjustable bent assemblies
RU2069878C1 (en) 1992-02-10 1996-11-27 Кузьмичев Олег Борисович Process of electromagnetic logging of holes
GB2288028A (en) * 1994-03-31 1995-10-04 Halliburton Co Sealed modular downhole antenna
NO314646B1 (en) * 1994-08-15 2003-04-22 Western Atlas Int Inc Transient electromagnetic measuring tool and method for use in a well
RU2107313C1 (en) 1996-07-12 1998-03-20 Дворецкий Петр Иванович Method of geophysical studies of holes of complex configuration based on usage of directed wide-band electromagnetic pulses excited by cylindrical slot array
US6057784A (en) * 1997-09-02 2000-05-02 Schlumberger Technology Corporatioin Apparatus and system for making at-bit measurements while drilling
US6188222B1 (en) * 1997-09-19 2001-02-13 Schlumberger Technology Corporation Method and apparatus for measuring resistivity of an earth formation
NO315725B1 (en) * 1998-06-18 2003-10-13 Norges Geotekniske Inst Device for measuring and monitoring resistivity outside a well pipe in a petroleum reservoir
NO310384B1 (en) * 1998-06-18 2001-06-25 Norges Geotekniske Inst Method for detecting reflectors in a production well by means of a radar-like transmitter and receiver device
NO310383B1 (en) * 1998-06-18 2001-06-25 Norske Stats Oljeselskap Apparatus and method for detecting electrical properties in a petroleum well by means of conductive electromagnetic waves
US6294917B1 (en) * 1999-09-13 2001-09-25 Electromagnetic Instruments, Inc. Electromagnetic induction method and apparatus for the measurement of the electrical resistivity of geologic formations surrounding boreholes cased with a conductive liner
US6594584B1 (en) * 1999-10-21 2003-07-15 Schlumberger Technology Corporation Method for calculating a distance between a well logging instrument and a formation boundary by inversion processing measurements from the logging instrument
US6656014B2 (en) * 2001-03-12 2003-12-02 Alan P. Aulson Mobile bridge cutting arrangement
US6958610B2 (en) * 2001-06-03 2005-10-25 Halliburton Energy Services, Inc. Method and apparatus measuring electrical anisotropy in formations surrounding a wellbore
US6646441B2 (en) * 2002-01-19 2003-11-11 Precision Drilling Technology Services Group Inc. Well logging system for determining resistivity using multiple transmitter-receiver groups operating at three frequencies
US7093672B2 (en) * 2003-02-11 2006-08-22 Schlumberger Technology Corporation Systems for deep resistivity while drilling for proactive geosteering
US20040183538A1 (en) 2003-03-19 2004-09-23 Tilman Hanstein Structure for electromagnetic induction well logging apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060033502A1 (en) * 1999-01-28 2006-02-16 Bittar Michael S Electromagnetic wave resistivity tool having a tilted antenna for geosteering within a desired payzone
US6181138B1 (en) * 1999-02-22 2001-01-30 Halliburton Energy Services, Inc. Directional resistivity measurements for azimuthal proximity detection of bed boundaries
US20030085707A1 (en) * 2001-09-26 2003-05-08 Minerbo Gerald N Directional electromagnetic measurements insensitive to dip and anisotropy
US6998844B2 (en) * 2002-04-19 2006-02-14 Schlumberger Technology Corporation Propagation based electromagnetic measurement of anisotropy using transverse or tilted magnetic dipoles
US20050140373A1 (en) * 2003-05-22 2005-06-30 Schlumberger Technology Corporation Directional electromagnetic wave resistivity apparatus and method
US20060011385A1 (en) * 2004-07-14 2006-01-19 Schlumberger Technology Corporation Apparatus and system for well placement and reservoir characterization
WO2008008386A2 (en) * 2006-07-11 2008-01-17 Halliburton Energy Services, Inc. Modular geosteering tool assembly
WO2009009342A1 (en) * 2007-07-10 2009-01-15 Schlumberger Canada Limited Determining formation parameters using electromagnetic coupling components

Also Published As

Publication number Publication date
CN101918863B (en) 2014-10-29
EP2223164A2 (en) 2010-09-01
BRPI0819891A2 (en) 2019-09-24
NO20100855L (en) 2010-06-16
RU2502094C2 (en) 2013-12-20
WO2009076183A2 (en) 2009-06-18
CN101918863A (en) 2010-12-15
MX2010006094A (en) 2010-06-25
CA2707040A1 (en) 2009-06-18
RU2010128063A (en) 2012-01-20
US7755361B2 (en) 2010-07-13
US20080136419A1 (en) 2008-06-12

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