【摘要】 利用沾化凹陷实施的第1口页岩气参数井(济页参1井)数据资料,以沙河街组泥页岩为研究对象,通过钻探、岩心观察和实验测试,分析沙河街组泥页岩的生储条件。结果表明:沙河街组暗色泥页岩具备页岩气形成的物质基础和较强的生烃能力,沙河街组三段下部及以深范围有机质已达到生气或以生气为主的阶段,沙河街组三段下部泥页岩孔隙度平均值为6. 4%,泥页岩中发育的裂缝有利于页岩气的运移和后期改造,脆性矿物含量超过52%,有利于人工造缝。综合研究认为,沾化凹陷的泥页岩具备页岩气形成的生储和改造条件,可作为下一步勘查工作的目标层位。该研究可为沾化凹陷沙河街组页岩气后续勘查开发工作提供一定参考。更多还原

【Abstract】 Based on the data of the first stratigraphic test well( Well Jiyecan-1) in Zhanhua Depression,the drilling,core observation and experiment test were used to analyze the shale gas accumulation conditions in the Shahejie Formation. Result indicates that the dark mud shale in the Shahejie Formation is characterized by favorable material basis for shale gas generation and hydrocarbon generation capacity. The organic matter in the Shahejie-3 Member and its lower part has reached gas generation stage or dominated by gas generation stage. The average mud shale porosity is 6.4% in the lower part of Shahejie-3 Member. The fractures in the mud shale is favorable to the shale gas migration and later transformation. The brittle mineral content exceeds 52%,which is conductive to artificial stimulation. According to the comprehensive research,the shale in Zhanhua Depression is favorable to shale gas generation,accumulation and later transformation,which can be considered as the target interval in the further exploration. This research could provide certain reference for the further exploration and development of shale gas in the Shahejie Formation of Zhanhua Depression.更多还原