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GB2458394A - Method of and apparatus for processing electromagnetic data - Google Patents

Method of and apparatus for processing electromagnetic data Download PDF

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Publication number
GB2458394A
GB2458394A GB0909891A GB0909891A GB2458394A GB 2458394 A GB2458394 A GB 2458394A GB 0909891 A GB0909891 A GB 0909891A GB 0909891 A GB0909891 A GB 0909891A GB 2458394 A GB2458394 A GB 2458394A
Authority
GB
United Kingdom
Prior art keywords
data
source
water
receiver
processing electromagnetic
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.)
Granted
Application number
GB0909891A
Other versions
GB2458394B (en
GB2458394B8 (en
GB0909891D0 (en
GB2458394A8 (en
Inventor
Lars Ole Loseth
Lasse Amundsen
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.)
Equinor ASA
Original Assignee
Statoil ASA
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 Statoil ASA filed Critical Statoil ASA
Publication of GB0909891D0 publication Critical patent/GB0909891D0/en
Publication of GB2458394A publication Critical patent/GB2458394A/en
Publication of GB2458394B publication Critical patent/GB2458394B/en
Application granted granted Critical
Publication of GB2458394B8 publication Critical patent/GB2458394B8/en
Publication of GB2458394A8 publication Critical patent/GB2458394A8/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

A method is provided for processing electromagnetic data, such as data obtained by mCSEM techniques, representing a region of the Earth covered by water such as seawater. A source (1) such as a horizontal electric dipole, is used with one or more receivers (5) to obtain the data. The data are then processed to remove an airwave contribution having a first component, which propagates without reflection from the source to the receiver, and second components whose propagation paths undergo reflections at the air/water interface (3) and at the water/sediments interface (4). The propagation paths of the second components have vertical portions at the source (1) and at the receiver (5) resulting from reverberations between the interfaces (3, 4).
GB0909891A 2006-11-22 2007-11-21 Method of and apparatus for processing electromagnetic data Expired - Fee Related GB2458394B8 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0623279.7A GB0623279D0 (en) 2006-11-22 2006-11-22 Air wave modeling for MCSEM/SBL surveying
PCT/EP2007/062659 WO2008062024A2 (en) 2006-11-22 2007-11-21 Method of and apparatus for processing electromagnetic data

Publications (5)

Publication Number Publication Date
GB0909891D0 GB0909891D0 (en) 2009-07-22
GB2458394A true GB2458394A (en) 2009-09-23
GB2458394B GB2458394B (en) 2011-03-23
GB2458394B8 GB2458394B8 (en) 2013-08-07
GB2458394A8 GB2458394A8 (en) 2013-08-07

Family

ID=37636313

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0623279.7A Ceased GB0623279D0 (en) 2006-11-22 2006-11-22 Air wave modeling for MCSEM/SBL surveying
GB0909891A Expired - Fee Related GB2458394B8 (en) 2006-11-22 2007-11-21 Method of and apparatus for processing electromagnetic data

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0623279.7A Ceased GB0623279D0 (en) 2006-11-22 2006-11-22 Air wave modeling for MCSEM/SBL surveying

Country Status (4)

Country Link
GB (2) GB0623279D0 (en)
NO (1) NO343082B1 (en)
RU (1) RU2423728C2 (en)
WO (1) WO2008062024A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0900906D0 (en) * 2009-01-20 2009-03-04 Schlieffers Jorg Removing or reducing the airwave in CSEM data by using weighted field differences
EP2598915B1 (en) 2010-07-27 2018-11-07 Exxonmobil Upstream Research Company Inverting geophysical data for geological parameters or lithology
EP2606452A4 (en) 2010-08-16 2017-08-16 Exxonmobil Upstream Research Company Reducing the dimensionality of the joint inversion problem
WO2012166228A1 (en) 2011-06-02 2012-12-06 Exxonmobil Upstream Research Company Joint inversion with unknown lithology
EP2721478A4 (en) 2011-06-17 2015-12-02 Exxonmobil Upstream Res Co Domain freezing in joint inversion
US9494711B2 (en) 2011-07-21 2016-11-15 Garrett M Leahy Adaptive weighting of geophysical data types in joint inversion
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2385923A (en) * 2002-05-24 2003-09-03 Statoil Asa Method for electromagnetic wavefield resolution
WO2005010560A1 (en) * 2003-06-26 2005-02-03 Exxonmobil Upstream Research Company Method for removing air wave effect from offshore frequency domain controlled-source electromagnetic data
WO2005096020A1 (en) * 2004-04-03 2005-10-13 Statoil Asa Method and apparatus for deriving a calibration filter for electromagnetic data
GB2415511A (en) * 2004-06-26 2005-12-28 Statoil Asa Processing electromagnetic data

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2349222B (en) * 1999-04-21 2001-10-31 Geco Prakla Method and system for electroseismic monitoring of microseismicity

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2385923A (en) * 2002-05-24 2003-09-03 Statoil Asa Method for electromagnetic wavefield resolution
WO2005010560A1 (en) * 2003-06-26 2005-02-03 Exxonmobil Upstream Research Company Method for removing air wave effect from offshore frequency domain controlled-source electromagnetic data
WO2005096020A1 (en) * 2004-04-03 2005-10-13 Statoil Asa Method and apparatus for deriving a calibration filter for electromagnetic data
GB2415511A (en) * 2004-06-26 2005-12-28 Statoil Asa Processing electromagnetic data

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
AMUNDSEN ET AL: "Decomposition of electromagnetic fields into upgoing and downgoing components" GEOPHYSICS,, vol. 71, no. 5, 28 August 2006 (2006-08-28), pages G211-G223, XP002488358 *
NORDSKAG JANNICHE IREN ET AL: "Asymptotic airwave modeling for marine controlled-source electromagnetic surveying" November 2007 (2007-11), GEOPHYSICS; GEOPHYSICS NOVEMBER/DECEMBER 2007, VOL. 72, NR. 6, PAGE(S) F249 - F255 , XP002492816 *

Also Published As

Publication number Publication date
NO20092363L (en) 2009-08-18
GB2458394B (en) 2011-03-23
NO343082B1 (en) 2018-10-29
GB0623279D0 (en) 2007-01-03
GB2458394B8 (en) 2013-08-07
GB0909891D0 (en) 2009-07-22
RU2009123488A (en) 2010-12-27
WO2008062024A2 (en) 2008-05-29
GB2458394A8 (en) 2013-08-07
WO2008062024A3 (en) 2008-11-27
RU2423728C2 (en) 2011-07-10

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S117 Correction of errors in patents and applications (sect. 117/patents act 1977)

Free format text: REQUEST FILED; REQUEST FOR CORRECTION UNDER SECTION 117 FILED ON 21 APRIL 2011

S13A Application for inventor to be mentioned (section 13(1)/patents act 1977)

Free format text: APPLICATION FILED; REFERENCE UNDER RULE 10(2) BY STATOILHYDRO ASA FILED ON 24 MAY 2013

S13C Application for inventor not to be mentioned (section 13(3) patents act 1977)

Free format text: APPLICATION FILED; APPLICATION FOR A PERSON NOT TO BE MENTIONED AS INVENTOR UNDER SECTION 13(3) BY STATOILHYDRO ASA FILED ON 24 MAY 2013.

S13A Application for inventor to be mentioned (section 13(1)/patents act 1977)

Free format text: APPLICATION ALLOWED; IN A DECISION OF THE COMPTROLLER DATED 16 JULY 2013, THE APPLICATION FILED UNDER RULE 10(2) WAS ALLOWED. THE COMPTROLLER FOUND THAT LARS OLE LOSETH SHOULD BE MENTIONED AS A JOINT INVENTOR AND DIRECTED THAT AN ADDENDUM SLIP MENTIONING HIM AS SUCH BE PREPARED FOR BOTH THE PUBLISHED PATENT APPLICATION AND THE GRANTED PATENT FOR THE INVENTION.

S13C Application for inventor not to be mentioned (section 13(3) patents act 1977)

Free format text: APPLICATION ALLOWED; IN A DECISION OF THE COMPTROLLER DATED 16 JULY 2013, THE APPLICATION FILED UNDER SECTION 13(3) WAS ALLOWED. THE COMPTROLLER FOUND THAT JANNICHE IREN NORDSKAG SHOULD NOT HAVE BEEN MENTIONED AS A JOINT INVENTOR IN RESPECT OF THE PUBLISHED PATENT APPLICATION AND THE SUBSEQUENT GRANTED PATENT. THE DECISION SERVES AS A CERTIFICATE TO THIS EFFECT. THE COMPTROLLER ALSO DIRECTED THAT AN ADDENDUM SLIP BE PREPARED FOR BOTH THE PUBLISHED PATENT APPLICATION AND THE GRANTED PATENT STATING THAT JANNICHE IREN NORDSKAG SHOULD NOT HAVE BEEN MENTIONED AS AN INVENTOR.

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20130905 AND 20130911

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20211121