摘要
In comparison with the organic matter type,organic carbon abundance,thermal maturity and thickness of source rocks in shale-gas-bearing basins abroad, the present paper preliminarily confirmed the conditions for shale-gas accumulation in the Eastern Sag of the Liaohe Oilfield. The experimental study on gas amounts absorbed by shales indicated that there existed a positive correlation between the absorbed gas amount and the TOC and thermal maturity of dark mud shales in the Eastern Sag, and its adsorbed gas amount was 0.2~1.2 m3/t, basically equal to that of the Gordondale shale in Canada and the Lower Silurian Longmaxi Formation shale of the Sichuan Basin.