Geochemical characteristics and distribution of Lower Cretaceous Albian stage source rocks in Côte d'Ivoire Basin.

The Côte d' Ivoire Basin is one of the important oil production areas in Africa. Based on the comprehensive analysis of drilling, logging, and geochemical data in Côte d' Ivoire Basin, this paper comprehensively evaluated the Cretaceous lacustrine source rocks in the study area, established the total organic carbon(TOC) quantitative prediction model of the Cretaceous source rocks in the study area by using the organic carbon method, determined the relationship between seismic reflection characteristics and geochemical characteristics of the source rocks, and tracked the main source rocks horizontally. The results show that the TOC of the Lower Cretaceous Albian source rocks is 2.63%, the kerogen type II is dominant, and the Ro is 0.3%-0. 9%. Source rocks are mainly in the low-mature to mature stage, and generally of good and premium quality. Premium quality source rocks are mainly distributed in the central area of the eastern depression of the basin, TOC values is ranging from 4. 00 % to 5.00 %, thickness is large, and continuity is good. [ABSTRACT FROM AUTHOR]