在分析录井、钻井及地球化学等资料的基础上，对辽河盆地东部凹陷沙河街组页岩气成藏地质条件进行研究。东部凹陷沙河街组富有机质泥岩主要为沉积于半深湖- -深湖的暗色泥岩及发育在沼泽环境中的炭质泥岩，分布面积为 3 000 km ² ，有机碳丰度为 1% ～16. 97%，干酪根类型以Ⅱ 1 和Ⅱ 2 型为主，其有机质镜质体反射率 (Ro) 整体处于低成熟- - 高成熟阶段。通过类比美国五大页岩气产区成藏地质条件，笔者预测东部凹陷驾掌寺—二界沟、黄于热地区可评为有利页岩气远景区。利用气测全烃值、孔隙度及吸附气计算总含气量，求得有利远景区在沙三段与沙一、二段页岩气资源量分别为 871 ×10 ⁸ m ³ 和 742 ×10 ⁸ m ³ 。

According to the analyses on the logging，drilling and geochemical data，the accumulation geolog- ical conditions of Shahejie Formation shale gas in the eastern sag of Liaohe Basin are studied． The rich organic mat- ter mudstone is mainly the dark mudstone deposited on the half deep lake- deep lake and the charcoal mudstone formed from the swamp environment in Shahejie Formation of the eastern sag，which is 3 000 km ² in area． The ma- jor organic carbon values of the dark mudstone range from 1% to 16. 97%，and the kerogen types are mainly Ⅱ 1 and Ⅱ 2 ． The vitrinite reflectance values (Ro) of most organic matter at the low- mature and the high- mature stage． Comparing with five shale gas producing areas in United States， the authors forecast that the Jiazhangsi- Erjie- gou area and the Huangyure area in the eastern sag are rated as the beneficial prospective areas of shale gas accu- mulation． Using the relationship among measuring hydrocarbon gas，porosity and sorbed- gas content to get total gas content，the shale gas resource extent of beneficial prospective areas is 871 ×10 ⁸ m ³ in the third member of Shahe- jie Formation and 742 ×10 ⁸ m ³ in the first and the second member of Shahejie Formation．