In this paper, the hydrocarbon expulsion course of low mature source rocks from the Cretaceous of Chaochang area and the Tertiary of peripheral Tangyuan area in the Songliao Basin is studied by laboratory simulation.

Simulation of hydrocarbon generation and expulsion of low maturity oil shale

The evaluation of pressure effects is obtained by performing the hydrolysis of methyl octadecanonate as a model reaction catalyzed by seven different samples of immature source rock that had first been extracted with organic solvents.

Based on relationships between the apparent activation energy (AAE) and hydrocarben generating rate,the frequency factor and AAE,which were derived from pyrolysis analysis of immature source rocks in the study area,a model of chemical reaction kinetics (MCRK) was established.

Then active oxygen was oxidized with organic matters in immature source rocks at low temperature, and the organic matters in the immature source rocks could be removed.

Kinetics study on hydrocarbon generation of fatty acid ester catalyzed by immature oil source rocks at low temperature;

Taking stearic acid as reactant, the methane contents from fatty acid hydrogenation catalyzed by the modified mollimonterite and the immature oil source rocks at various pressure and temperature respectively were detected.