济源-中牟-黄口坳陷带热演化史与油气的关系  

Relations between geothermal history and hydrocarbon generation in Jiyuan-Zhongmou-Huangkou depression belt

作　　者：刘丽[1] 任战利[1] 

机构地区：[1]西北大学大陆动力学国家重点实验室地质系,陕西西安710069

出　　处：《石油与天然气地质》2007年第3期355-361,共7页Oil & Gas Geology

基　　金：中国煤成气成藏机制及经济开采基础研究项目(2002CB211704);长江学者和创新团队发展计划资助项目(IRT0559)

摘　　要：济源-中牟-黄口坳陷带的上古生界烃源岩经历了复杂的构造热演化历史。在中三叠世之前,坳陷带具有相似的热演化史,而于侏罗纪晚期—白垩纪发生的差异性沉降导致各构造单元上古生界烃源岩的热演化程度出现差异。济源凹陷在三叠纪之后没有或轻微抬升,连续沉积中、新生界,侏罗纪—古近纪为主要生烃期;中牟凹陷自新生代以来大幅沉降,古生界持续升温,主要生烃期为古近纪;黄口凹陷从侏罗纪开始沉降,晚始新世再度沉降,热演化程度低,白垩纪—古近纪为主要生烃期。The Upper Palaeozoic source rocks in Jiyuan-Zhongmou-Huangkou depression belt experienced complicate structural and thermal evolution. The three depressions were similar in thermal history before the Middle Triassic, but the differential subsidence during the late of the Jurassic-Cretaceous period led to their diffe rence in thermal evolution of the Upper Paleozoic source rocks. Jiyuan depression suffered no or tiny uplifting after the Triassic and received continuously Mesozoic and Cenozoic deposits. The Jurassic-Eogene period is its main hydrocarbon generation stage. Zhongmou depression passed through extensive subsidence since the Cenozoic resulting in continuous rising of the temperature of the Palaeozoic. The Eogene is its main hydrocarbon generation period. Huangkou depression began to subside since the Jurassic and subsided again in the Late Eocene. Its thermal maturity is low and the Cretaceous-Eogene period is the main stage of hydrocarbon generation.

关 键 词：古地温 热演化史 生烃期 济源-中牟-黄口坳陷带 

分 类 号：TE122.1[石油与天然气工程—油气勘探]