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An application of LOTEM around salt dome near Houston, Texas
Master Program of Geotechnology, Khon Kaen University.
Master Program of Geotechnology, Khon Kaen University.
KMS Technologies.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.ORCID-id: 0000-0002-5600-5375
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2017 (Engelska)Ingår i: AIP Conference Proceedings, ISSN 0094-243X, E-ISSN 1551-7616, Vol. 1861, artikel-id 030006Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A salt dome is an important large geologic structure for hydrocarbon exploration. It may seal a porous reservoir of rocks that form petroleum reservoirs. Several techniques such as seismic, gravity, and electromagnetic including magnetotelluric have successfully yielded salt dome interpretation. Seismic has difficulties seeing through the salt because the seismic energy gets trapped by the salt due to its high velocity. Gravity and electromagnetics are more ideal methods. Long Offset Transient Electromagnetic (LOTEM) and Focused Source Electromagnetic (FSEM) were tested over a salt dome near Houston, Texas. LOTEM data were recorded at several stations with varying offset, and the FSEM tests were also made at some receiver locations near a suspected salt overhang. The data were processed using KMS's processing software: First, for assurance, including calibration and header checking; then transmitter and receiver data are merged and microseismic data is separated; Finally, data analysis and processing follows. LOTEM processing leads to inversion or in the FSEM case 3D modeling. Various 3D models verify the sensitivity under the salt dome. In addition, the processing was conducted pre-stack, stack, and post-stack. After pre-stacking, the noise was reduced, but showed the ringing effect due to a low-pass filter. Stacking and post-stacking with applying recursive average could reduce the Gibbs effect and produce smooth data

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American Institute of Physics (AIP), 2017. Vol. 1861, artikel-id 030006
Nationell ämneskategori
Geofysik
Forskningsämne
Prospekteringsgeofysik
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URN: urn:nbn:se:ltu:diva-65095DOI: 10.1063/1.4990893ISI: 000413696500007Scopus ID: 2-s2.0-85026548327OAI: oai:DiVA.org:ltu-65095DiVA, id: diva2:1132701
Konferens
1st International Geo-Electromagnetic Workshop 2017, IGeo-EM 2017, Campus of Institute Technology of BandungBandung, West Java, Indonesia, 21-24 February 2017
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2017-08-15 (andbra);Konferensartikel i tidskrift

Tillgänglig från: 2017-08-15 Skapad: 2017-08-15 Senast uppdaterad: 2017-12-20Bibliografiskt granskad

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Smirnov, Maxim

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