Effect of Clay Content on Rock Physics Properties: A Case Study in Sabah Basin

Abstract

Located within the Sabah Basin, SB field is located in the vicinity of Baram Delta province and consist of a broad spectrum of sand/shale content facies, thus creating the heterolithic sandstone in the basin. The presence of a high amount of clay within the sandstone had raised some issues in interpreting the target reservoirs, due to the lack of understanding of the characteristics of clays in the reservoirs. In this work, several good logs and seismic data were integrated to construct a numerical model of rock physics which then used to evaluate the effects of clay on rock physics properties. From the rock physics models, the relationship between the clays and rock properties were examined that eventually qualitatively assessed the quality of the reservoirs