Bibliographic Citation
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| Title | A few case histories of subsurface imaging with EMAP as an aid to seismic processing and interpretation |
| Creator/Author | Warren, R.K. |
| Publication Date | 1996 Nov 01 |
| OSTI Identifier | OSTI ID: 438985 |
| Report Number(s) | CONF-9206464-- |
| Other Number(s) | Journal ID: GPPRAR; ISSN 0016-8025; TRN: TRN: IM9711%%449 |
| Resource Type | Journal Article |
| Resource Relation | Journal Name: Geophysical Prospecting; Journal Volume: 44; Journal Issue: 6; Conference: 54. European Association of Exploration Geophysicists (EAEG) meeting, Paris (France), Jun 1992; Other Information: PBD: Nov 1996 |
| Subject | 02 PETROLEUM; MAGNETOTELLURIC SURVEYS; PETROLEUM GEOLOGY; SEISMIC SURVEYS; AUGMENTATION; CARBONATE ROCKS; GEOLOGIC STRUCTURES; FIELD TESTS; WESTERN US OVERTHRUST BELT |
| Description/Abstract | The electromagnetic array profiling (EMAP) exploration method can be combined with a direct one-dimensional inversion process for conversion to depth to produce a subsurface resistivity cross-section. This cross-section may then be interpreted in parallel with a seismic cross-section to enhance the prediction of rock type and structure. In complex thrust environments and areas of shallow carbonate rocks, the EMAP method is often used to provide additional data either to help the seismic processor and/or to aid the seismic interpretation. In particular, the electromagnetic (EM) data can be used to build an independent seismic velocity file for depth migration. Three EMAP test areas in the western US are used to demonstrate such a use of EMAP as an exploration tool. The first shows how a velocity file is estimated from resistivity data for seismic depth migration processing in a complex thrust environment. In the second example, the method is applied in layer-cake geology with high seismic velocity rocks at the earth`s surface. The third example is another complex thrust environment, but in this case the velocity file derived from the resistivity data is used for stacking the seismic data. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: pp. 923-934 |
| System Entry Date | 2008 Feb 04 |
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Last Updated: 11/19/2009