北乌斯丘尔特盆地含油气系统及勘探前景分析  

Hydrocarbon Systems in the North Ustyurt Basin and Their Exploration Prospects

作　　者：陈学海[1] 卢双舫[2] 陈学洋[1] 薛海涛[2] Chen Xuehai Lu Shuangfang Chen Xueyang Xue Haitao(PetroChina Daqing Oilfield Limited Company, Daqing, Heilongjiang 163453, China China University of Petroleum （ East China ）, Qingdao , Shandong 266580, China)

机构地区：[1]中国石油大庆油田有限责任公司,黑龙江大庆163453 [2]中国石油大学(华东),山东青岛266580

出　　处：《特种油气藏》2017年第3期31-36,共6页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"资源评价参数选取及天然气资源评价(2011ZX05007-001);中国石油科技重大专项"全球剩余油气资源研究及油气资产快速评价技术"(2011ZX05028)

摘　　要：应用含油气系统理论,以生烃灶质量与生烃有效性为主要依据,结合储集层、盖层、圈闭、成藏历史及构造格局,将北乌斯丘尔特盆地划分为3个含油气系统。对各含油气系统的静态地质要素和动态地质作用过程开展研究及评价,分析了油气勘探前景并指出重点的攻关方向。结果表明:中侏罗统—中侏罗统、下白垩统(已知的)+始新统(推测的)含油气系统规模大,成藏组合关系相对优越,勘探潜力最大,勘探重点是寻找良好的储集体及对圈闭形成时期与生排烃期匹配的评价;另2个含油气系统的勘探程度较低,烃源岩仍是油气成藏的制约因素,上古生界—石炭系(已知的)含油气系统勘探程度最低,是远景勘探领域。研究成果对于明确盆地的重点勘探领域以及寻找勘探目标具有重要指导意义。By using theories for hydrocarbon-bearing systems,and with consideration to the quality of hydrocarbon-generation kitchens,hydrocarbon-generation efficiency,together with reservoir formations,caprocks,traps,reservoir formation history and structural frameworks,the North Ustyurt Basin can be divided into 3 hydrocarbon-bearing systems. Researches have been performed for static geologic elements and dynamic geologic processes of various hydrocarbon-bearing systems to determine oil-gas exploration prospects and to highlight key objectives for future researches. Research results show the Mid-Jurassic—Mid Jurassic,Lower Cretaceous（ already knew） ＋Eocene（ supposed） hydrocarbon-bearing systems are characterized by large scales and relatively favorable reservoir assembly combinations. Consequently,these systems have the highest exploration potential. Keys for future exploration operations include identification of favorable reservoir structures and assessments for matching between periods with formation of traps and periods with hydrocarbon generation and discharging; On the other hand,the other 2 hydrocarbon-bearing systems are poorly explored with hydrocarbon source rocks remain restrictions over hydrocarbon accumulation. Upper Paleozoic—Carboniferous（ already knew） hydrocarbon-bearing system has the lowest exploration level. Consequently,these formations may serve as targets for long-term exploration. Relevant research results may provide importance guidances over identification of key exploration fields and targets in the Basin.

关 键 词：北乌斯丘尔特盆地 含油气系统 烃源岩 成藏 勘探前景 

分 类 号：TE121.1[石油与天然气工程—油气勘探]