事件油气源岩

EVENT OIL—GAS SOURCE ROCK

李华东

Li Huadong

地质矿产部石油地质中心实验室, 无锡 214151

Central Laboratory of Petroleum Geology, MGMR

本文剖析了几类事件油气源岩,指出了事件油气源岩具备原始有机质丰度高、成岩机理独特、成烃转化率高等特征;探讨了远源型与近源型沉积的油气源岩的差别;提出完整的事件油气源岩体系可形成较为理想的岩性圈闭油气藏。此外,对比研究了事件油气源岩与正常油气源岩的地质地球化学特征;归纳总结了事件油气源岩的概念、类型、形成机制及其研究意义。

With the basis of the analysis of several event oil-gas source rocks,first the paper suggests that these rocks are characteristic of higher primary organic richness,peculiar diage-netic mechanism,and higher transforming ratio of hydrocarbon formation;secondly it approaches the difference of source rocks between distal and near origins;and thirdly it proposes that a complete system of event oil-gas source rocks can form into quite favourable oil-gas pools of lithological trapping type.Furthermore,correlative study is made on geological and geochemical characteristics of event source rocks with those ordinary ones;finally it concludes the concept,type,formative mechanism and research significance about event oil-gas source rocks.

https://doi.org/10.11781/sysydz199204372