下扬子区海相盆地改造与成藏关键要素

发布时间：2018-01-23 23:24

本文关键词： 海相盆地改造变形地质结构有效烃源有效保存下扬子区　出处：《石油实验地质》2016年06期 　论文类型：期刊论文

【摘要】：下扬子区古生界海相盆地晚中生代(T2末)以来经历了晚印支—早燕山期(T3-J2)对冲挤压、中晚燕山期(J3-K1)左行走滑错移及喜马拉雅期(K2-E)伸展拆离3期性质完全不同的构造运动的变形改造,使得海相实体的赋存状况和地质结构极其复杂。与之对应,下扬子海相成烃—成藏分为加里东期—早印支期初次生烃—早期成藏、晚印支—燕山期破坏调整、早喜马拉雅期二次生烃—晚期成藏3个阶段。对黄桥、句容含油构造及泰山古油藏等典型解剖表明,现实的油气聚集主要以晚期成藏为主,海相实体赋存状况及其地质结构、有效烃源、有效保存条件成为晚期成藏的关键要素。
[Abstract]:The Paleozoic marine basin in the Lower Yangtze area has experienced the late Indosinian to early Yanshanian period (T3-J22) since the late Mesozoic. In the middle and late Yanshanian period (J _ 3-K _ 1) left strike-slip dislocation and Himalayan stage K _ 2-E) the deformation and transformation of tectonic movement with completely different properties are also discussed. The occurrence and geological structure of marine entities are very complicated. Accordingly, the formation of hydrocarbon in the Lower Yangtze Sea is divided into Caledonian early early Indosinian secondary hydrocarbon generation and early Indosinian hydrocarbon generation and early Indosinian Yanshanian destruction and adjustment. The typical anatomy of Huangqiao, Jurong oil bearing structure and Taishan paleoreservoir shows that the real hydrocarbon accumulation is mainly late hydrocarbon accumulation. The occurrence of marine entities, their geological structure, effective hydrocarbon sources and effective preservation conditions have become the key elements of late reservoir formation.
【作者单位】：中国石化石油勘探开发研究院无锡石油地质研究所;
【基金】：中国石化重大先导项目(G5800-13-ZS-TY)资助
【分类号】：P618.13
【正文快照】： 下扬子地区海相盆地晚中生代(T2末)以来经历了3期性质完全不同的构造运动改造,使得海相实体的赋存状况、地质结构及其成烃—成藏过程极其复杂[1]。长期制约下扬子地区海相勘探的深部地震成像困难、地震资料品质差的根本原因,其实就在于多期构造运动叠加改造所导致的海相实体赋

【相似文献】