塔里木盆地石炭系油气藏主控因素定量分析及有利区预测  

Quantitative Analysis of Reservoir Controlling Factors and Favorable Areas Prediction,Tarim Basin

作　　者：余秋华[1,2] 庞雄奇[1,2] 王怀杰[1,2,3] 

机构地区：[1]中国石油大学油气资源与探测国家重点实验室,北京102249 [2]中国石油大学盆地与油藏研究中心,北京102249 [3]中国石油煤层气有限责任公司,陕西韩城715400

出　　处：《地质科技情报》2011年第2期91-96,共6页Geological Science and Technology Information

基　　金：国家重点基础研究发展计划"973"项目(2006CB202308)

摘　　要：石炭系是塔里木盆地台盆区主要的油气产层之一,该层系中的油气藏普遍显现出位置迁移、规模改造、组分变异和相态转换等特征,对该类油气藏的分布预测十分困难。根据"中国典型叠合盆地油气形成富集与分布预测"中提出的叠合盆地要素匹配成藏模式(T-CDMS)预测了塔里木盆地石炭系的有利成藏区域。通过分别研究四大主控因素(区域盖层C、优质沉积相D、古隆起M、烃源岩S)与控藏概率和控藏范围之间的关系,从而建立了有效的数学模型,根据多地质要素匹配模式的原理综合四大主控因素的共同作用,预测了各地区的油气成藏概率和成藏范围。结果表明:塔中隆起Ⅰ号断裂带、塔北隆起哈拉哈塘凹陷是石炭系目的层形成大油气田的最有利地区。此预测结果可为下一步油气勘探提供指导,其预测方法可以为油气田有利区域的预测提供新的思路。Carboniferous target zone is an area of major oil and gas production in Tarim Basin.The reservoir generally shows the location migration,the scale transform,composition variation and phase conversion,so its distribution is very difficult to predict.This paper presents the prediction of favorable reservoirs in Tarim Basin according to the multi-element matching superimposed basin accumulation model（T-CDMS） proposed in the ＂typical superimposed basins in China on oil and gas accumulation and distribution prediction＂.First,the respective evaluation was made on the relationship of the four main control factors（regional seal C,facies D,paleouplift M and hydrocarbon source rock S,） with the probability and control range of hydrocarbon accumulation in different stages.Then an effective mathematical model was created according to many geological matching patterns for the four elements of an integrated role of the master factors to predict the probability of hydrocarbon accumulation areas.The results show that Tazhong,Tabei Halahetang Sag is the most favorable area for the formation of large oil and gas fields in Carboniferous target layer.This prediction may provide guidance and a new idea for further exploration.

关 键 词：叠合盆地 塔里木盆地 要素匹配成藏模式 有利成藏区预测 

分 类 号：P618.13[天文地球—矿床学]