Sierra de Reyes 3D seismic survey (onshore Argentina): depth imaging complex geology by applying multi-focusing, Kirchhoff, Beam and RTM workflows
Pablo Borghi, David Curia, Martín Alayón, Paul Veeken, Ignacio Lescano and Daniel Justo
Journal name: First Break
Issue: Vol 35, No 12, December 2017 pp. 67 - 76
Info: Article, PDF ( 1.68Mb )
Seismic acquisition and processing for imaging the subsurface is an important workflow in the petroleum industry. Complex geological settings such as tectonic thrust belts are a major challenge. The Sierra de Reyes 3D (SR3D) seismic survey in western Argentina is an example of where rough terrain land acquisition is combined with complex structural geology. These two problems have to be solved concurrently during the depth imaging steps. The SR3D land seismic project (270 km2) is located in the SE part of the Ranquil Norte concession (Neuquen Basin, Figure 1). The area lies in the Southern Central Andes, in the external Malargüe fold and thrust belt (FTB). The FTB is characterized by the coexistence of thick and thin skin thrusting. This compressive regime has produced the structural traps of several main oil and gas fields of the northern Neuquen Basin. The further exploration of this hydrocarbon play has driven the development of the SR3D project (Figure 2).