鄂尔多斯盆地延长组大型低渗透岩性油藏储层综合评价  

Comprehensive Reservoir Evaluation of Large-Scale Low-Permeability Lithologic Oil Reservoirs of Triassic Yanchang Formation, Ordos Basin

作　　者：淡卫东[1,2] 牛小兵[1,2] 梁晓伟[1,2] 王成玉[1,2] 辛红刚[1,2] 张三[1,2] 张振红[1,2] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院 [2]低渗透油气田勘探开发国家工程实验室

出　　处：《低渗透油气田》2012年第3期20-25,62,共7页

摘　　要：通过系统分析鄂尔多斯盆地不同地区三叠系延长组低渗储层特征的共性及差异性，优选出反映沉积、物性、孔隙结构及孔隙类型等方面特征的参数作为储层综合评价指标，对比各区各层各储层表征参数的分布特征，对储层综合评价指标进行量化．建立了鄂尔多斯盆地三叠系延长组低渗储层统一的储层分类评价标准，使盆地内延长组低渗储层在纵向、横向上具可对比性。对盆地内重点含油区块延长组主力合油层系低渗储层进行储层评价．快速评价出有利储层发育区，为石油勘探、评价及开发提供可靠地质依据。Through systematical analysis of the similarities and otherness between the low-permeability reservoir characteristics of Yanchang Formation in various areas of Ordos basin, the parameters that reflect the characteristics of deposition, physical proper- ties, pore structures and types, etc. were preferred, as the target or index of comprehensive reservoir evaluation. Through comparison of the distribution features of various reservoir parameters in various areas, the index of comprehensive reservoir evaluation wer^- quantified. The unified classified estimating criteria of low-permeability reservoirs of Ordos basin were established. Thus the low-per- meability reservoirs of Yanchang Formation in the basin have the comparability horizontally and vertically. Low-permeability reser- voirs of main series of strata of Yanchang Formation of the key oil-bearing blocks in the basin have been evaluated, and the devel- oped areas of the favorable reservoirs are to be rapidly chosen. Then they could provide a reliable geological basis for oil exploration, evaluation and development.

关 键 词：低渗透 储层评价 延长组 鄂尔多斯盆地 

分 类 号：TE121[石油与天然气工程—油气勘探]