武清凹陷石炭—二叠系烃源岩的二次生烃评价  

Evaluation of the Second Hydrocarbon-Generation of the Permo-Carboniferous Source Rocks in Wuqing Depression

作　　者：朱炎铭[1] 秦勇[1] 范炳恒[1] 桑树勋[1] 杨永国[1] 姜波[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221008

出　　处：《地球科学（中国地质大学学报）》2004年第1期77-84,共8页Earth Science-Journal of China University of Geosciences

基　　金：中国石油天然气总公司"九五"科技工程项目 (No .970 2 0 6) .

摘　　要：武清凹陷石炭—二叠系烃源岩自形成以来经历了复杂的构造 -埋藏历史 ,并发生过多次生烃演化过程 .基于详细的构造 -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 ,深入研究了武清凹陷石炭—二叠系烃源岩的生烃演化历史 ,阐明了石炭—二叠系生烃作用发生的构造期次、生烃强度 ,揭示了武清凹陷石炭—二叠系烃源岩曾发生过 2次重要的生烃作用过程 ,分别发生在燕山期与喜山晚期 ,得出了二次生烃作用主要发生在喜山晚期的主要结论 .此外 ,还结合有机质热解模拟量版 ,定量评价了石炭—二叠系各期生烃强度 ,并提出了武清凹陷是华北石炭—二叠系油气勘探的最有利地区之一 .After the Permo-Carboniferous source rocks formed, they have gone through complicated tectonic-burial history in Wuqing depression, and multiple hydrocarbon-generation evolution have taken place. After detailed research on tectonic-burial history, combined with the fission tracks testing and fluid inclusion analyses, using the EASY%R_o numerical simulation, the paper reveals the evolution process, the tectonic episodes and the strength of hydrocarbon-generation of Permo-Carboniferous source rocks. It comes to a conclusion that two hydrocarbon-generation processes have taken place since the Permo-Carboniferous formation, and draws an important conclusion that more hydrocarbon-generation of the Permo-Carboniferous source rocks took place in late Cenozoic. Combined with the measuring map of hydrocarbon regenerated amount & maturation of organic matter, we quantitatively evaluated the hydrocarbon-generation strength of Permo-Carboniferous source rocks in different episodes. Finally the paper brings forward that Wuqing depression is an advantageous zone for the exploration of Permo-Carboniferous oil & gas in North China.

关 键 词：石炭-二叠系烃源岩 构造-埋藏史 二次生烃作用 数值模拟 武清凹陷 油气藏 

分 类 号：P618.13[天文地球—矿床学]