Seismic attribute and sequence stratigraphic integration methods for resolving reservoir geometry in San Jorge Basin, Argentina

摘要

Seismic attribute analysis and interpretation have revolutionized the way geoscientists look at and interpret seismic data. Coherency processing, because of its edge-detection capabilities, has greatly improved the explorationist's ability to rapidly map structural frameworks and interpret details that are typically unrecognized in conventional amplitude data sets. However, this technology has been underutilized to resolve stratigraphic and depositional geometry of seismic features. The complexity of many seismically imaged fluvial depositional systems is a product of numerous sources, including geologic hetero-genity of deposits, random noise in the data, surface or ocean bottom features, and structural discontinuities. Clear methodology for resolving these complexities is needed if attributes are to properly image, and geoscientists are to accurately interpret, stratigraphic features in seismic data. This paper documents a case study from fluvially deposited stratigraphic units in the San Jorge Basin in Argentina. We integrated sequence stratigraphic interpretation of key stratal surfaces and seismic attributes to reduce reservoir uncertainty in exploration and development wells.