塔里木盆地8000m以深超深层海相油气勘探潜力与方向  

Petroleum exploration potential and favorable areas of ultra-deep marine strata deeper than 8 000 meters in Tarim Basin

作　　者：朱光有[1] 曹颖辉[1] 闫磊[1] 杨海军[2] 孙崇浩[2] 张志遥 李婷婷[1] 陈永权[2] Zhu Guang-you;Cao Ying-hui;Yan Lei;Yang Hai-jun;Sun Chong-hao;Zhang Zhi-yao;Li Ting-ting;Chen Yong-quan(Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China;Tarim Oilfield Company,PetroChina,Korla 841000,China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油塔里木油田公司,新疆库尔勒841000

出　　处：《天然气地球科学》2018年第6期755-772,共18页Natural Gas Geoscience

基　　金：中国石油天然气股份有限公司科学研究与技术开发项目"深层烃源岩形成与分布"(编号:2018A-0102);国家科技重大专项"塔里木盆地奥陶系-前寒武系碳酸盐岩油气资源潜力及目标优选"(编号:2016ZX05004-004)联合资助

摘　　要：深层和超深层油气是目前研究和勘探的热点领域。由于深层钻井资料少,地质认识还处于探索阶段,但是中国海相克拉通盆地深层丰富的油气资源条件已是众多石油地质学者的共识。奥陶系和寒武系深层已取得一系列发现,前寒武系除四川盆地突破外,其他盆地也都启动研究或钻探。塔里木盆地新近纪以来的快速沉降与堆积,下古生界及前寒武系目前埋深主要在5 000~12 000m,8 000m以浅已取得一大批勘探发现和工业产能建设,8 000m以深是未来重要勘探领域。通过对塔里木盆地超深层油气成藏条件分析,特别是对寒武系、震旦系、南华系烃源岩的分析、超深层碳酸盐岩储层的形成与保持、超深层油气相态、以及成藏组合的分析,对8 000m以深的重要勘探领域进行评价,指出奥陶系、寒武系、震旦系等未来8 000m以深超深层油气勘探的主要领域和勘探方向,为超深层油气勘探提供理论指导。At present,deep and ultra-deep oil and gas have become the research and exploration hotspots.Despite of a scarcity in deep-hole drilling data and immature understanding about its geologic status,the fact that abundant oil and gas resources develop in deeply-buried strata of Chinese marine craton basins have achieved the consensus of most petroleum geologists.A series of discoveries have been made in the Ordovician and Cambrian strata,and a lot of research or drilling work has been in the Precambrian strata of some other basins along with the breakthroughs in Sichuan basin.In Tarim Basin,the current burial depth of the Lower Paleozoic and the Precambrian mainly ranges from 5 000 to 12 000 meters as a result of the rapid subsidence and accumulation since the Neogene,with a great number of exploration discoveries and commercial productions gained at the depth less than 8 000 meters,and more attention would be paid to the potential and prospecting exploration field much deeper than that.Based on the analyses of hydrocarbon accumulation conditions in the ultra-deep layers of the Tarim Basin,especially those of the Cambrian,Sinian,and Nanhua source rocks,the formation and maintenance of ultra-deep carbonate reservoirs,and the ultradeep oil-gas phase,as well as the reservoir combinations,this paper makes an evaluation of the major exploration areas deeper than 8 000 meters and points out the most favorable areas and future exploration focuses in the Ordovician,Cambrian and Sinian strata in order to provide theoretical guidance for ultra-deep oil and gas exploration.

关 键 词：超深层 新元古代 油气相态 寒武系 克拉通盆地 塔里木盆地 

分 类 号：TE132.1[石油与天然气工程—油气勘探]