构造活动对雪峰山邻区海相油气分布的控制  

THE TECTONIC CONTROLS ON THE DISTRIBUTION OF MARINE OIL AND GAS IN THE ADJACENT AREAS OF XUEFENG MOUNTAIN

作　　者：杨鑫[1,2] 刘兴旺[1] 王亚东[1] 刘燕红 郑建京[1] 

机构地区：[1]中国科学院油气资源研究重点实验室,甘肃兰州730000 [2]中国科学院研究生院,北京石景山100049 [3]中国石油华北油田公司山西煤层气勘探开发分公司,山西晋城048000

出　　处：《西南石油大学学报（自然科学版）》2011年第4期7-12,184-185,共6页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家重点基础研究发展计划973项目(2005CB422101);中国科学院知识创新工程青年人才类重要方向项目(KZCX2-EW-QN112)

摘　　要：在厘定雪峰山活动带大地构造属性的基础上,据湘鄂西地区和湘中地区原始油气地质条件及后期破坏、次生成藏特点,探讨了显生宙以来雪峰山活动带对邻区海相油气分布的构造控制。研究表明:加里东运动和燕山运动是雪峰山地区最强烈的两期陆内造山事件,构造变形的区域不均一性导致两侧邻区海相油气地质特征和分布各异。湘鄂西地区下组合震旦系—志留系烃源岩均已高过成熟,以干气为主,主要聚集在复向斜内封堵条件好的构造–岩性复合型圈闭内;而湘中地区海相油气赋存在上组合内,烃源岩处于成熟—过成熟阶段,龙潭组煤系盖层以下古背斜及相邻向斜内的次级背斜对油气聚集较为有利。Based on determining the property of the tectonic activity of the Xuefeng Mountain,according to the original petroleum geology condition,post-destruction of oil and gas and sub-generating characteristics of reservoirs in western Hunan and Hubei,and central Hunan regions,this paper explores the tectonic controls of Xuefeng Mountain Activities on the distribution of marine oil and gas in adjacent areas. Studies show that the Caledonian movement and Yansian movement were the most powerful two intracontinental orogenic events in the Xuefeng Mountain region,and the regional disparity of tectonic deformation has led to the differences of geology characteristics and distribution of marine oil and gas on both sides. The maturity of source rocks of lower assemblage in western Hunan and Hubei provinces are high over-mature,and the component is mainly dry gas,and they mainly gather in structural-lithologic compound traps,where the plugging condition are better in synclinorium. The marine oil and gas of the Hunan regions gather in upper assemblage,and the source rocks are mature-over-mature. The ancient anticline under Longtan Formation coal-bearing cap rock and the sub-anticline within adjacent syncline are more favorable for oil and gas sub-aggregation.

关 键 词：雪峰山 湘鄂西 湘中拗陷 滑覆构造 海相油气 

分 类 号：TE121[石油与天然气工程—油气勘探]