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Impact of shallow volcanics on seismic data quality in Chicontepec Basin, Mexico |
| ID |
58 |
| Title |
Impact of shallow volcanics on seismic data quality in Chicontepec Basin, Mexico |
| Authors |
Victor Pena, Chávez-Pérez, Marco Vazquez-Garcia, Kurt Marfurt |
| Authors detail |
VICTOR PENA, University of Oklahoma
SERGIO CHÁVEZ-PÉREZ, Instituto Mexicano del Petróleo
MARCO VÁZQUEZ-GARCÍA, PEMEX Exploración y Producción
KURT J. MARFURT, University of Oklahoma |
| Publication |
The Leading Edge |
| Publication Detail |
The Leading Edge June 2009 |
| Volume |
June 2009 |
| Year |
2009 |
| Abstract |
Chicontepec Basin is one of the most productive in Mexico. Unlike the world-famous Cantarell and Poza Rica carbonate fi elds, characterized by high-producing wells tapping large continuous reservoirs, the Chicontepec play is characterized by thin, sometimes multistoried turbidite and fan reservoirs encased in shales and cut by mud slumps and mass transport complexes. Th e sand reservoirs are relatively small and have very low permeability. Most new wells need to be hydraulically fractured, with anomalously higher production being hypothesized as due to fractures draining nearby, otherwise disconnected, sand bodies.
Mapping laterally discontinuous thin sand fans and turbidites is diffi cult even with the best seismic data. These problems are exacerbated in the Amatitlán seismic survey, acquired in the northern end of the Chicontepec Basin, where rough topography, dense forest, human habitation, and archaeological sites add lateral amplitude and signal-to-noise heterogeneity that is due to acquisition obstacles, rather than to geology. Further complicating the eff ort at maintaining data fi delity are shallow volcanic sills (and perhaps shallow volcanic extrusives).
We show in this paper how careful, processor-intensive attention to fundamental issues signifi cantly improves the image presented to the interpreter. We evaluate the improvement in quality of these images though attribute-horizon and time slices. As an ancillary product, we present the morphology and seismic expression of volcanic sills on 3D seismic data and attributes. |
| Keywords |
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| Status |
Accepted |
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