Core Sample from Kurra Chine Formation Well : Chiaxery, Garra Lithology : Dolomitic Limestone Crude oil coming out inside core sample: Kurra Chine Formation is considered a unique petroleum system that includes source, reservoir, and cap rocks. Rock-Eval pyrolysis is a technique that is usually used because it takes a short time, has small samples, and costs less. total organic carbon (TOC) is the main tool to determine the amount of organic matter in the source rock samples. studied the source