冀中坳陷武清凹陷苏50井石炭-二叠纪煤系的成烃演化

基于对武清凹陷苏50井的石炭-二叠纪煤系的构造—埋藏史研究,结合磷灰石裂变径迹测试及矿物包裹体分析,运用EASY%Ro数值模拟技术,研究了苏50井石炭-二叠系烃源岩的生烃演化历史,揭示了苏50井处石炭-二叠系烃源岩曾发生过3次重要的生烃作用过程,分别发生在海西-印支期、燕山期与喜马拉雅晚期,主要生烃作用发生在喜马拉雅晚期,并指出武清凹陷是华北石炭-二叠系煤成气勘探的有利地区之一。

Hydrocarbon generation and evolution of Carbono-Permian coal series from the Well Su-50 in the Wuqing Sag, Central Hebei Depression

The Carbono-Permian source rocks experienced complicated tectono-burial history in the areas of the Bohai Bay Basin.Based on study of tectono-burial history,combined with fluid inclusion analyses,and using the EASY%Ro numerical simulation,the paper revealed the evolution process,the tectonic episodes and the strength of hydrocarbon generation of the Carbono-Permian source rocks from the Well Su-50 in the Wuqing Sag,Central Hebei Depression.Three hydrocarbon generations could be discovered,and occurred in the Hercynian-Indosinian,Yanshanian and Late Himalayan movements respectively,with the Late Cenozoic being key period for hydrocarbon generation and evolution.The Wuqing Sag should be an advantage region for the oil-gas exploration of the Carbono-Permian in the North China.