基于有效储层识别的砾岩储层综合评价——以八区下乌尔禾组油藏为例  

Comprehensive evaluation of conglomerate reservoir based on effective reservoir identification:A case study with the P2w reservoir of Block 8 in Karamay oilfield

作　　者：阴国锋[1] 徐怀民[1] 陶武龙 李林 张广群 

机构地区：[1]油气资源与探测国家重点实验室中国石油大学,北京102249 [2]中油新疆油田分公司,新疆克拉玛依834008

出　　处：《特种油气藏》2011年第3期27-30,136,共4页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"大型油气田及煤层气开发"子课题"岩性地层区带;圈闭评价与储层预测技术研究"(2008ZX05001-003)

摘　　要：从岩心分析入手,根据岩相及电性标志,确定了研究区的砾岩有效储层类型和发育特征。在此基础上,结合三次加密调整阶段的分级累产参数确定了八区下乌尔禾组油藏的储层划分标准。运用综合评价方法将全区储层分为4类,Ⅰ类储层最好,Ⅳ类储层最差。基于储层分类结果,实施了井网4次加密试验,结果表明:储层预测厚度的误差率在5%以内,储层类型符合率达到80%,设计产能达标率在90%以上。该方法的应用为进一步认识和评价特低渗透砾岩储层及油田四次加密井的全面实施奠定了坚实的地质基础,可广泛应用于其他同类油藏。The types and characteristics of effective conglomerate reservoirs in the lower Urho formation of Block 8 of Karamay oilfield have been defined according to reservoir cores,lithofacies and electric property.Reservoir classification standard has been established based on net pay identification combining with parameters of cumulative oil production from wells of different ranks during three times of infill adjustment.The reservoirs in the study area are classified into four categories through comprehensive evaluation,with Class I being the best and Class IV the worst.Based on the result of reservoir classification,the fourth infill test has been successfully carried out with net pay prediction error less than 5%,the coincidence rate of reservoir type of 80%,and the compliance rate of designed productivity over 90%.This method has laid a solid geological foundation for further understanding and evaluation of ultra-low permeability conglomerate reservoirs and full-scale implementation of the fourth infill adjustment in the oilfield,and can be widely applied to other similar reservoirs.

关 键 词：油气田开发地质 砾岩油藏开发 综合评价 有效储层 

分 类 号：TE122.2[石油与天然气工程—油气勘探]