Maturity parameters of source rocks from the Baise Basin, South China

Abstract

Source rocks in the Baise Basin have been studied more than 20 yr. However, its maturity is still a problem under debate. In this project, 32 samples of source rocks from the Baise Basin were analysed by geochemical methods in order to study the maturity of the source rocks. For this article the samples were analysed for 16 different maturity parameters. Based on their quality as maturity indicators these parameters were divided into three groups: reliable, accessorial, and unsuitable maturity parameters. According to the values from the reliable and accessorial maturity groups, a source rock in two wells was classified with respect to its maturity level. The source rock in the Nadu 1 well is assessed to be in the lower mature stage, whereas the source rock in the Nadu 2 well was assessed to be in the mature stage.