DK200701036A - Shallow marine electromagnetic hydrocarbon prospecting - Google Patents

Shallow marine electromagnetic hydrocarbon prospecting Download PDF

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Publication number
DK200701036A
DK200701036A DK200701036A DKPA200701036A DK200701036A DK 200701036 A DK200701036 A DK 200701036A DK 200701036 A DK200701036 A DK 200701036A DK PA200701036 A DKPA200701036 A DK PA200701036A DK 200701036 A DK200701036 A DK 200701036A
Authority
DK
Denmark
Prior art keywords
approx
sea
receivers
signals
pulses
Prior art date
Application number
DK200701036A
Other languages
English (en)
Inventor
Johnstad Svein Erling
Farrelly Brian Anthony
Original Assignee
Norsk Hydro As
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 Norsk Hydro As filed Critical Norsk Hydro As
Publication of DK200701036A publication Critical patent/DK200701036A/da
Application granted granted Critical
Publication of DK177603B1 publication Critical patent/DK177603B1/da

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/083—Controlled source electromagnetic [CSEM] surveying
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/15—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
    • G01V3/17—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with electromagnetic waves
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/30—Assessment of water resources

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  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Claims (13)

1. Fremgangsmåde til at bestemme de elektriske egenskaber af en submarin oliefluidumbærende formation (1) under geologiske overlag (2) af en tykkelse s under en havbund (3) af et hav (4), kendetegnet ved at fremgangsmåden omfatter følgende trin: * at anbringe en eller flere senderantenner (9) i havet (4), og at anbringe en eller flere elektromagnetiske modtagere (8) i havet (4), hvilket hav har en lavvandet havdybde (d) på ca. 50 meter til ca. 350 m; * at anvende senderantennen (9), som transmitterer elektromagnetiske signaler (10) af en eller flere pulser (11), som har en frekvens, som er en meget lavfrekvens på mellem ca. 0,01 Hz og ca. 0,10 Hz; * at anvende modtagerantennerne (8), som har en forskydning i forhold til senderen (9) til at modtage propagerede, elektromagnetiske signaler (12) som følge af de udsendte elektromagnetiske signaler (10); * at analysere en eller flere komponenter af de modtagne signaler (12) fra modtagere (8), som har forskydninger mellem ca. 1 km og ca. 12 km, for at se om signalerne (12) er væsentligt forskellige fra et tilsvarende signal, som ville opstå fra en vandbærende formation (1), hvilket ville være en indikation på en fluidumbærende formation (1).
2. Fremgangsmåde ifølge krav 1, kendetegnet ved at de transmitterede signal (10) -pulser (12) generelt omfatter firkantspulser.
3. Fremgangsmåde ifølge krav 1, kendetegnet ved at signalerne (10) har en bølgelængde (!) på mere end fem gange tykkelsen (s) af overlagene (2).
4. Fremgangsmåde ifølge krav 1, kendetegnet ved at modtagerne (8) er anbragt på havbunden (3).
5. Fremgangsmåde ifølge krav 1, kendetegnet ved at senderen (9) bugse-res i havet (4).
6. Fremgangsmåde ifølge krav 1, kendetegnet ved at modtagerne (8) bug-seres på havbunden (3).
7. Fremgangsmåde ifølge krav 1, kendetegnet ved at modtagerne (8) bug-seres i havet (4).
8. Fremgangsmåde ifølge krav 1, kendetegnet ved at modtagerne (8) bug-seres på havbunden (3).
9. Fremgangsmåde ifølge krav 1, kendetegnet ved at analysen foretages med hensyn til amplituden af de detekterede signaler (12).
10. Fremgangsmåde ifølge krav 1, kendetegnet ved at de transmitterede signalpulser (11) generelt er firkantspulser, der mindst omfatter harmoniske bølger af frekvensen 3*f, som er detekterbar ved forskydningerne.
11. Fremgangsmåde ifølge krav 1, kendetegnet ved at der anvendes en senderantenne (9) med en længde på ca. 50 m til ca. 500 m, fortrinsvis fra ca. 100 m til ca. 300 m.
12. Fremgangsmåde ifølge krav 11, kendetegnet ved at der anvendes en senderantenne (9), der leder en elektrisk strøm på ca. 80 A til ca. 2000 A, fortrinsvis i området fra 100 A til 1000 A.
13. Fremgangsmåde ifølge krav 1, kendetegnet ved at der anvendes en senderantenne (9) med et ækvivalent produkt af strøm (I) gange længde (L) -komponenten i vandret retning på ca. 400 Am til ca. 1000000 Am, fortrinsvis i området fra 10000 Am ti! 300000 Am.
DKPA200701036A 2005-01-10 2007-07-13 Elektromagnetisk marin efterforskning efter carbonhydrider på lavt vand DK177603B1 (da)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NO20050108A NO323490B1 (no) 2005-01-10 2005-01-10 Elektromagnetisk hydrokarbonprospektering i grunne havomrader
NO20050108 2005-01-10
NO2006000007 2006-01-09
PCT/NO2006/000007 WO2006073315A1 (en) 2005-01-10 2006-01-09 Shallow marine electromagnetic hydrocarbon prospecting

Publications (2)

Publication Number Publication Date
DK200701036A true DK200701036A (da) 2007-10-03
DK177603B1 DK177603B1 (da) 2013-11-18

Family

ID=35209746

Family Applications (1)

Application Number Title Priority Date Filing Date
DKPA200701036A DK177603B1 (da) 2005-01-10 2007-07-13 Elektromagnetisk marin efterforskning efter carbonhydrider på lavt vand

Country Status (11)

Country Link
US (1) US7812611B2 (da)
CN (1) CN101147084B (da)
AU (1) AU2006204173B2 (da)
BR (1) BRPI0606711B1 (da)
CA (1) CA2594285C (da)
DK (1) DK177603B1 (da)
GB (1) GB2437225B (da)
MX (1) MX2007008292A (da)
NO (1) NO323490B1 (da)
RU (1) RU2394256C2 (da)
WO (1) WO2006073315A1 (da)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2409900B (en) * 2004-01-09 2006-05-24 Statoil Asa Processing seismic data representing a physical system
GB2435693A (en) 2006-02-09 2007-09-05 Electromagnetic Geoservices As Seabed electromagnetic surveying
NO326957B1 (no) * 2006-02-13 2009-03-23 Norsk Hydro As Elektromagnetisk metode pa grunt vann med bruk av styrt kilde
GB2439378B (en) 2006-06-09 2011-03-16 Electromagnetic Geoservices As Instrument for measuring electromagnetic signals
GB2442749B (en) * 2006-10-12 2010-05-19 Electromagnetic Geoservices As Positioning system
GB2445582A (en) * 2007-01-09 2008-07-16 Statoil Asa Method for analysing data from an electromagnetic survey
JP5571549B2 (ja) 2007-05-14 2014-08-13 オーシャン フロア ジオフィジックス インコーポレイテッド 地球物理学的方法及び地球物理学的システム
US20100067325A1 (en) * 2008-09-09 2010-03-18 Yuefeng Sun System and Method for Collecting Seismic Information
CN101369025B (zh) * 2008-10-13 2011-03-30 湖南继善高科技有限公司 一种组合场源人工源频率域电磁测深方法
US8299936B2 (en) * 2008-12-18 2012-10-30 Bae Systems Information And Electronic Systems Integration Inc. Method and apparatus for establishing low frequency/ultra low frequency and very low frequency communications
US8143897B2 (en) * 2009-02-11 2012-03-27 Mtem Ltd. Short-offset transient electromagnetic geophysical surveying
US8554482B2 (en) * 2009-05-05 2013-10-08 Baker Hughes Incorporated Monitoring reservoirs using array based controlled source electromagnetic methods
US8131522B2 (en) 2009-06-26 2012-03-06 Pgs Geophysical As Method for estimating and removing air wave response in marine electromagnetic surveying
CN101799556B (zh) * 2010-03-11 2012-08-22 清华大学 极低频发射与接收系统及装置
WO2012015542A1 (en) 2010-07-27 2012-02-02 Exxonmobil Upstream Research Company Inverting geophysical data for geological parameters or lithology
CA2806874C (en) 2010-08-16 2016-12-06 Exxonmobil Upstream Research Company Reducing the dimensionality of the joint inversion problem
EP2721478A4 (en) 2011-06-17 2015-12-02 Exxonmobil Upstream Res Co FREEZING OF DOMAINS IN A CONNECTION VERSION
US10310123B2 (en) * 2012-03-09 2019-06-04 Cgg Services Sas Seismic reflection full waveform inversion for reflected seismic data
US10591638B2 (en) 2013-03-06 2020-03-17 Exxonmobil Upstream Research Company Inversion of geophysical data on computer system having parallel processors
US9846255B2 (en) 2013-04-22 2017-12-19 Exxonmobil Upstream Research Company Reverse semi-airborne electromagnetic prospecting
US20150301217A1 (en) * 2014-04-17 2015-10-22 Pgs Geophysical As Ultra-long electromagnetic source
CN105891895B (zh) * 2016-04-11 2017-03-01 中国科学院地质与地球物理研究所 一种确定天波传播特性的系统和方法
CN105807326B (zh) * 2016-04-11 2017-03-08 中国科学院地质与地球物理研究所 一种利用天波进行深部勘探的系统和方法
CA3223091A1 (en) * 2021-06-18 2022-12-22 Philip Clegg Determining presence and depth of materials in the earth

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1122998A1 (ru) 1983-06-03 1984-11-07 Всесоюзное Морское Научно-Производственное Объединение Инженерной Геологии "Союзморинжгеология" Способ морской геоэлектроразведки
US4616184A (en) * 1984-06-27 1986-10-07 The United States Of America As Represented By The United States Department Of Energy CSAMT method for determining depth and shape of a sub-surface conductive object
GB9818875D0 (en) * 1998-08-28 1998-10-21 Norske Stats Oljeselskap Method and apparatus for determining the nature of subterranean reservoirs
US6339333B1 (en) * 1999-03-12 2002-01-15 Profile Technologies, Inc. Dynamic electromagnetic methods for direct prospecting for oil
GB2383133A (en) * 2001-08-07 2003-06-18 Statoil Asa Investigation of subterranean reservoirs
GB2382875B (en) 2001-12-07 2004-03-03 Univ Southampton Electromagnetic surveying for hydrocarbon reservoirs
GB2399640B (en) * 2003-03-17 2007-02-21 Statoil Asa Method and apparatus for determining the nature of submarine reservoirs

Also Published As

Publication number Publication date
GB2437225A (en) 2007-10-17
US20090267608A1 (en) 2009-10-29
WO2006073315A1 (en) 2006-07-13
NO20050108L (no) 2006-07-11
RU2394256C2 (ru) 2010-07-10
US7812611B2 (en) 2010-10-12
NO323490B1 (no) 2007-05-29
CN101147084B (zh) 2011-11-16
CN101147084A (zh) 2008-03-19
AU2006204173A1 (en) 2006-07-13
GB2437225B (en) 2010-09-22
RU2007130549A (ru) 2009-02-20
BRPI0606711A2 (pt) 2010-03-16
CA2594285A1 (en) 2006-07-13
DK177603B1 (da) 2013-11-18
MX2007008292A (es) 2007-09-07
GB0715596D0 (en) 2007-09-19
NO20050108D0 (no) 2005-01-10
BRPI0606711B1 (pt) 2017-06-20
AU2006204173B2 (en) 2011-06-02
CA2594285C (en) 2016-06-14

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Effective date: 20210109