ABSTRACT
The Songliao Basin in north-eastern China is a large basin rich in hydrocarbon resources, of which the Dehui area has made an important breakthrough at depth. However, the current evaluation and understanding of hydrocarbon source rocks have not been studied scientifically and systematically. The lack of oil and gas source comparisons has resulted in a lack of clear and reasonable direction for the next step in finding favorable exploration zones and targets in the Dehui area. A comprehensive evaluation of its hydrocarbon source rocks was carried out by combining rock sample analysis tests, logging, and drilling and logging data. The results show that the source rocks in the Dehui area are widely distributed, with a large thickness of up to 600m or more, with type II2 and III kerogens, a high total organic carbon content (TOC), a mature-high maturity stage of thermal evolution and medium hydrocarbon generation potential. The main development of moderate-good hydrocarbon source rocks shows a promising future.
