Fault detection and mapping using 3D diffraction imaging and coherency analysis

J. Vermeulen, B. Gurevich, M. Urosevic, E. Landa

Research output: Contribution to conferencePaperpeer-review

Abstract

Automatic detection of geological discontinuities such as small throw faults, and pinch-outs is an important problem in the interpretation of 3D seismic data. This is commonly done using coherency analysis. However coherency may be affected by noise, which may create false anomalies. We propose a new interpretation workflow for the detection and mapping of faults, which enhances the coherency-type analysis with identification and detection of diffractions produced by the discontinuities. The algorithm utilizes migrated and unmigrated stacked seismic volumes and the cube of stacking (NMO) velocities. Tests on a simple 2.5 D model show that the method is capable in detecting and mapping of faults below seismic resolution.

Original languageEnglish
Pages1627-1631
Number of pages5
DOIs
StatePublished - 2006
Externally publishedYes
EventSociety of Petroleum Engineers, 68th European Association of Geoscientists and Engineers Conference and Exhibition, incorporating SPE EUROPEC 2006, EAGE 2006: Opportunities in Mature Areas - Vienna, Austria
Duration: 12 Jun 200615 Jun 2006

Conference

ConferenceSociety of Petroleum Engineers, 68th European Association of Geoscientists and Engineers Conference and Exhibition, incorporating SPE EUROPEC 2006, EAGE 2006: Opportunities in Mature Areas
Country/TerritoryAustria
CityVienna
Period12/06/0615/06/06

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