塔木察格油田复杂断块储层非均质性综合指数与剩余油分布研究  

Research on the Reservoir Heterogeneity Index and the Remaining Oil Distribution in the Complex Fault Blocks in Tamsag Oilfield

作　　者：范广全 袁勇[2] 张晓华[2] 赵凯鑫[1] FAN Guangquan;YUAN Yong;ZHANG Xiaohua;ZHAO Kaixin(School of Earth Sciences and Engineering,Nanjing University,Nanjing 210023,China;Exploration and Development Research Institute of Daqing Oilfield Co.Ltd.,Daqing Heilongjiang 163712,China)

机构地区：[1]南京大学地球科学与工程学院,南京210023 [2]中国石油大庆油田公司勘探开发研究院,黑龙江大庆163712

出　　处：《重庆科技学院学报（自然科学版）》2020年第4期6-11,共6页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：中国石油重大科技专项“外围油田改善开发效果及提高采收率技术研究与应用”(2016E-0209)。

摘　　要：复杂断块油藏非均质性显著,影响对剩余油分布的准确预测。针对蒙古国塔木察格油田D断块,研究储层非均质性综合指数对非均质性的表征。基于研究区储层非均质性影响因素分析,优选沉积微相、微构造、油层有效厚度、孔隙度、隔夹层分布特征、渗透率及渗透率变异系数等多个参数,以全面、有效地反映储层特征。通过归一化处理和加权平均等方法得到非均质性综合指数。实践应用表明,D断块储层非均质性综合指数介于0.3-0.5的层位为剩余油主要分布区,是后期调整的重要区域。It is a hot but difficult research point to accurately predict the remaining oil distribution in complex fault blocks due to the outstanding feature of the reservoir heterogeneity.This research applies heterogeneous synthetic index to quantify the heterogeneous result in the Tamsag Oilfield in Mongolia.Based on the analysis of factors influencing reservoir heterogeneity in the study area,the index including the sedimentary microfacies,mini-structure,effective thickness,porosity,inter-layer distribution,permeability and permeability variation coefficient are selected as preferred parameters to show the reservoir characteristics more effectively and more comprehensively.The composite index of heterogeneity is obtained by normalization and weighted average.The application result shows that the remaining oil distribution in D fault blocks mainly lies in the horizons with the reservoir heterogeneous synthetic index between 0.3 and 0.5,which should be the target of oil search.

关 键 词：断块油藏 储层非均质性 渗透率变异系数 非均质性综合指数 剩余油分布 

分 类 号：P618[天文地球—矿床学]