华北地台石炭、二叠纪煤系的热演化及油气远景评价

THERMAL EVOLUTION OF THE CARBONIFEROUS-PERMIAN COAL SERIES IN THE NORTH CHINA PLATFORM AREAS AND ESTIMATION OF PETROLEUM PROSPECTING

张士亚

Zhang Shiya

地质矿产部石油地质研究所 北京

Institute of Petroleum Geology, MGMR

本文以大量镜煤反射率资料对华北地台石炭—二叠纪煤系的变质区带进行了划分。煤系的埋深和地温是控制热演化的重要因素,煤系的油气生成与煤系变质区带密切有关。二、三叠纪已进入中高变质带的煤系,油气形成早,如无良好盖层大部均可散失;在新生代形成的中高变质带及其邻区,油气形成较晚,具有较好前景。

The metamorphic zone of coal series in Carboniferous-Permin of the north China Platform are divided using abundant data of vitrinite reflectance. The burial depth and geotemperature are important factors which have a dominant influence over thermal evolution. Petroleum generation in coal series is closely related to the metamorphic zone of coal series. The Permian-Triassic coal series in the moderately-highly metamorphized zones usually have an early generated petroleum which would have been lost unless there are any good covering strata; while the moderately-highly metamorphic Cenozoic zones and their neibouring areas have a late generated petroleum, and they usually have promising prospects.

https://doi.org/10.11781/sysydz199004345