According to the organic carbon mass balance principle during the process of the hydrocarbon generation and expulsion within unit volume of source rocks,one variable quadratic equation of expulsion coefficient was derived through six separate algebraic equations based on the data of source rock extrusion and rock-eval.

The gas & water identification mode of the reservoir for Xujiahe group in the west of Sichuan province with gas logging hydrocarbon coefficient;

Key factors of controlling the hydrocarbon expulsion of the source rock in Dongying Sag;

Relationships between dynamic conditions of effective hydrocarbon expulsion and critical abundances of organic matter in carbonate source rocks;

terogeneity analysis of compaction and hydrocarbon expulsion from source rocks in faulted basin-taking Dongying sag as an example.;