NO343082B1 - Processing of electromagnetic data including removing the airwave contribution - Google Patents

Processing of electromagnetic data including removing the airwave contribution

Info

Publication number
NO343082B1
NO343082B1 NO20092363A NO20092363A NO343082B1 NO 343082 B1 NO343082 B1 NO 343082B1 NO 20092363 A NO20092363 A NO 20092363A NO 20092363 A NO20092363 A NO 20092363A NO 343082 B1 NO343082 B1 NO 343082B1
Authority
NO
Norway
Prior art keywords
data
source
water
processing
data including
Prior art date
Application number
NO20092363A
Other languages
Norwegian (no)
Other versions
NO20092363L (en
Inventor
Lasse Amundsen
Lars Ole Loseth
Original Assignee
Statoil Petroleum 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 Statoil Petroleum As filed Critical Statoil Petroleum As
Publication of NO20092363L publication Critical patent/NO20092363L/en
Publication of NO343082B1 publication Critical patent/NO343082B1/en

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

Abstract

En fremgangsmåte er tilveiebrakt for behandling av elektromagnetiske data, slik som data oppnådd ved hjelp av mCSEM-teknikker, som representerer et område av jorden dekket av vann, slik som sjøvann. En kilde (1), slik som en horisontal elektrisk dipol, blir benyttet med en eller flere mottakere (5) for a oppnå dataene. Dataene blir så behandlet for å fjerne et luftbølgebidrag med en første komponent, som forplanter seg uten refleksjon fra kilden og til mottakeren, og andre komponenter hvis forplantningsveier gjennomgår refleksjoner i luft/vanngrenseflaten (3) og i vann/sedimentgrenseflaten (4). Forplantningsveiene til de andre komponentene har vertikale deler ved kilden (1) og ved mottakerne (5) som resultat av etterklanger mellom grenseflatene (3, 4).A method is provided for processing electromagnetic data, such as data obtained by mCSEM techniques, which represent an area 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 is then processed to remove an airwave contribution with a first component, which propagates without reflection from the source and to the receiver, and other components whose propagation paths undergo reflections in the air / water interface (3) and in the water / sediment interface (4). The propagation paths of the other components have vertical portions at the source (1) and at the receivers (5) as a result of reverberations between the interfaces (3, 4).

NO20092363A 2006-11-22 2009-06-19 Processing of electromagnetic data including removing the airwave contribution NO343082B1 (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 (2)

Publication Number Publication Date
NO20092363L NO20092363L (en) 2009-08-18
NO343082B1 true NO343082B1 (en) 2018-10-29

Family

ID=37636313

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20092363A NO343082B1 (en) 2006-11-22 2009-06-19 Processing of electromagnetic data including removing the airwave contribution

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
US10379255B2 (en) 2010-07-27 2019-08-13 Exxonmobil Upstream Research Company Inverting geophysical data for geological parameters or lithology
US9195783B2 (en) 2010-08-16 2015-11-24 Exxonmobil Upstream Research Company Reducing the dimensionality of the joint inversion problem
US9453929B2 (en) 2011-06-02 2016-09-27 Exxonmobil Upstream Research Company Joint inversion with unknown lithology
WO2012173718A1 (en) 2011-06-17 2012-12-20 Exxonmobil Upstream Research Company Domain freezing in joint inversion
WO2013012470A1 (en) 2011-07-21 2013-01-24 Exxonmobil Upstream Research Company 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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2385923B (en) * 2002-05-24 2004-07-28 Statoil Asa System and method for electromagnetic wavefield resolution
EA008163B1 (en) * 2003-06-26 2007-04-27 Эксонмобил Апстрим Рисерч Компани Method for removing air wave effect from offshore frequency domain controlled-source electromagnetic data
GB2412740B (en) * 2004-04-03 2008-09-17 Statoil Asa Calibration filters
GB2415511B (en) * 2004-06-26 2008-09-24 Statoil Asa Processing electromagnetic data

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AMUNDSEN L, ET AL.: "Decomposition of electromagnetic fields into upgoing and downgoing components", GEOPHYSICS, SOCIETY OF EXPLORATION GEOPHYSICISTS, US, vol. 71, no. 5, 28 August 2006 (2006-08-28), US, pages G211 - G223, XP002488358, ISSN: 0016-8033, DOI: 10.1190/1.2245468 *

Also Published As

Publication number Publication date
GB0623279D0 (en) 2007-01-03
RU2423728C2 (en) 2011-07-10
GB2458394A8 (en) 2013-08-07
GB2458394A (en) 2009-09-23
GB0909891D0 (en) 2009-07-22
GB2458394B8 (en) 2013-08-07
WO2008062024A3 (en) 2008-11-27
NO20092363L (en) 2009-08-18
RU2009123488A (en) 2010-12-27
GB2458394B (en) 2011-03-23
WO2008062024A2 (en) 2008-05-29

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