Identification of Infill and Step-Out Drilling Potential Via Acoustic Inversion, 3D Seismic Attribute Analysis, and 3D Seismic Curvature Analysis: Neuquen and San Jorge Basins, Argentina

摘要

Although the San Jorge and Neuquen Basins contain some of Argentina's oldest and most important oil and gas reservoirs, significant potential for infill and step-out drilling remains. The high degree of lateral and vertical heterogeneity within reservoir strata has traditionally made reservoir prediction difficult, while key structural features resulting from multiple phases of tectonic deformation are often subtle but complex, making detailed compartmentalization and fracture analyses uncertain. Nevertheless, a detailed geological characterization is required for the effective re-development of existing reservoirs, particularly when planning secondary recovery and infill drilling programs. Following the acquisition of large 3D seismic surveys in these basins, YPF sought to improve the predictability of reservoir quality and subtle structural elements through the use of seismic attributes.