临清坳陷东部构造演化及对上古生界烃源岩生烃的控制作用  

Tectonic Evolution and Its Control over the Upper Palaeozoic Source Rocks in the Eastern Linqing Depression

作　　者：王明健[1] 张训华[1] 张运波[2] 何登发[3] 孙衍鹏[3] 李文涛[4] 

机构地区：[1]青岛海洋地质研究所,山东青岛266071 [2]中国地质大学(北京)地球科学与资源学院,北京100083 [3]中国地质大学(北京)能源学院,北京100083 [4]中石化胜利油田分公司地质科学研究院,山东东营257015

出　　处：《石油天然气学报》2012年第6期8-12,164,共5页Journal of Oil and Gas Technology

基　　金：国家重点基础研究发展计划("973")项目(2006CB202300)

摘　　要：目前渤海湾盆地的勘探形势良好,在上古生界陆续发现多个煤成气气田,但在盆地西南部的临清坳陷东部尚未有大的勘探突破。为提高天然气勘探效率,从构造演化方面入手,结合埋藏史和流体包裹体的分析结果,对研究区上古生界煤系烃源岩的生烃作用进行了深入研究。结果表明:临清坳陷东部的构造演化主要受华北板块与其周围板块的相互运动及其运动方式所控制,三叠纪以来经历了5期演化过程;上古生界煤系烃源岩的成熟演化主要受构造演化所控制,共经历了5次生烃作用,以喜马拉雅早中期和喜马拉雅晚期2次生烃作用最强,并且与圈闭形成时间匹配良好,生成的油气能得到有效的保存。At present the situation of hydrocarbon exploration was excellent in Bohai Bay Basin and several coal-seam gas-fields have been found in the Upper Palaeozoic System.But in the southwestern part of the basin there was no significant breakthrough in the eastern Linqing Depression.In order to improve the exploration efficiency,the hydrocarbon generation effect of Upper Palaeozoic source rock was analyzed from the aspect of tectonic evolution and in combination with the analysis of burial history and fluid inclusions.The hydrocarbon genesis of the Palaeozoic coal-seam source rocks was deeply studied.The result indicates that the tectonic evolution in the east of the depression is controlled by the movement styles of North China plate and its surrounding plates.The studied area has undergone five stages of basin evolution since Triassic.Tectonic evolution controlled the evolution of the Upper Palaeozoic coal-bearing source rocks and the source rocks experienced five hydrocarbon generation stages.Among the five hydrocarbon generation stages,the effect at the early-mid-Himalayan stage and late Himalayan stage are stronger than the other three.The hydrocarbon generation stages match well with the traps forming stages and the hydrocarbon genereated by the coal-bearing source rock can be preserved effectively.

关 键 词：临清坳陷东部 上古生界 构造演化 生烃作用 

分 类 号：P618.13[天文地球—矿床学]