Some Approaches to the Assessment of Shale Oil and Gas Resources

In recent years, with the continuous development of exploration technology, great achievements have been made in shale oil exploration in the ST Basin in my country. However, in practice, due to insufficient understanding of the formation mechanism, evaluation standards and resource potential of shale oil, this has brought certain constraints and limitations to the exploration and evaluation of shale oil. This article conducts a comprehensive analysis of the main controlling factors of shale oil resource potential in Area A of the ST Basin. Based on the “three-thirds” relationship between TOC and oil content, the shale oil and gas resource classification evaluation method is determined. Using the shale oil reservoir evaluation method, the shale oil in Area A of the ST Basin was evaluated. The study found that Block A not only has good reservoir performance, but also has excellent oil and gas quality, and the brittle minerals have good compressibility. The shale oil resources in area A were calculated based on relevant parameters, and it was found that the potential shale oil resources in this block reached 9.66·10⁹ t. The research provides certain technical support for the exploration and development of shale oil in China.