Rock physics modeling for quantitative seismic characterization of tight-gas sandstones in Neuquén Basin, Argentina
The basin-centered gas accumulation (BCGA) of Lajas and Punta Rosada formations is composed of a stack of low porosity (4% - 10%) sandstones, highly pressurized and pervasively saturated with gas, reaching up to a thickness of 1,000 meters. The low porosity of the reservoirs causes very low seismic sensitivity to the fluid variation, and traditional analyses used in conventional reservoirs may not give the correct assessments for this type of rock. Therefore, I apply multiple approaches to distinguish the effects of fluid, lithology, and porosity on the seismic response. A Monte Carlo simulation ...
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