要素匹配成藏模式在塔里木盆地的应用  

Application of Multi-Factor Matching Model for Hydrocarbon Accumulation to Tarim Basin

作　　者：余秋华[1,2] 王怀杰 庞雄奇[2] 

机构地区：[1]中海石油深圳分公司研究院,广州510240 [2]中国石油大学油气资源与探测国家重点实验室,北京102249 [3]中国石油煤层气有限责任公司,陕西韩城715400

出　　处：《新疆石油地质》2012年第1期31-34,共4页Xinjiang Petroleum Geology

基　　金：国家973项目(2006CB202308)

摘　　要：塔里木盆地志留系分布面积广,是主要的油气产层之一。该目的层油气来源多样,油气藏经历多期成藏和调整改造,类型复杂,导致该层系油气藏分布预测十分困难。根据国家973项目"中国典型叠合盆地油气形成富集与分布预测"中提出的叠合盆地多要素匹配成藏模式(T-CDMS),预测塔里木盆地志留系为有利成藏领域。首先建立各主控因素与油气藏之间的数学模型,然后定量评价4大主控因素(区域盖层C,沉积相D,古隆起M,烃源岩S)单独作用时的控藏范围和概率,在此基础上,按照多地质要素匹配模式原理预测了四大要素综合作用下的油气成藏概率和成藏范围。结果表明:志留系最有利区为孔雀河斜坡、英吉苏凹陷西部和满加尔凹陷周缘;有利区主要分布在塔北隆起英买力构造带和塔中隆起部分地区;巴楚隆起部分地区成藏可能性相对较小。The widely distributed Silurian in Tarim basin is one of major oil-gas producing zones.The target zone is characterized by multi-sources,multistage hydrocarbon accumulations and regulation and complicated types,resulting in that the prediction of its oil-gas reservoir distribution is very difficult.According to the multi-factor matching hydrocarbon accumulation model of superimposed basins(T-CDMS) proposed by The Oil and Gas Generation,Accumulation and Distribution Prediction of Typical Superimposed Basins in China,it is predicted that the Silurian in Tarim basin can be as a favorable domain for hydrocarbon accumulation by the method bellow: First,establishing the mathematical model for relationship between the controlling factors and the oil and gas reservoirs,and then quantitatively evaluating individual-process and comprehensive-process reservoir-controlling scope and probabilities for the four main control factors(C for regional cap rocks,D for sedimentary facies,M for paleo-uplift and S for source rocks).The results show that Kongquehe slope,western Yingjisu sag and peripheral Manjiaer sag are the most favorable areas for formation of large oil and gas fields in Silurian target zone;Yingmaili structural belt in Tabei uplift and part areas in Tazhong uplift are the favorable areas;while part areas in Bachu uplift are the relatively small possibility for hydrocarbon accumulation.

关 键 词：塔里木盆地 志留系 要素匹配成藏模式 有利成藏领域 

分 类 号：TE112.41[石油与天然气工程—油气勘探]