东营凹陷滩坝砂体油藏地质特征及压裂优化选层  

The Geological Feature and Fracturing Layer Optimization in Beach Bar Sandbody Reservoir of Dongying Depression

作　　者：杨成[1,2] 师永民[1] 

机构地区：[1]北京大学地球与空间科学学院,北京大学石油与天然气研究中心,北京100871 [2]中国石油化工股份有限公司胜利石油工程公司井下作业公司,东营257000

出　　处：《北京大学学报（自然科学版）》2013年第5期819-825,共7页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家重点基础研究发展计划(2009CB219302);国家科技重大专项"大型油气田及煤层气开发"(2011ZX05006-002)资助

摘　　要：针对东营凹陷滩坝砂岩油藏由于横向上变化快、单层薄、区域上单砂体连通性差、油气充满程度存在差异等因素导致各井储层改造效果差异较大的问题,分别从储层含油性、物理性能、厚度、储层流体充满程度4个方面,并结合压裂改造工艺现状,分析了压裂效果的影响因素,认为储层流体充满程度是决定压裂效果的最重要因素,并建立了地区优化选层的经验图版,对今后类似的滩坝砂岩储层压裂优化选层有一定的借鉴意义。Due to the severe lateral variation of the reservoir,thin thickness of the layer,poor regional connection of the sandbody and different oil saturation,well stimulation effect varies much in beach-bar sand reservoir of Dongying Depression.Combing current fracturing technology,the authors analyze factors controlling fracturing effects from the following 4 aspects including oil saturation,petrophysical properties,pay zone thickness and reservoir fluid saturation.It indicates that fluid saturation is the most influential factor in fracturing.An empirical chart is established for optimized layer selection,which can be reference for similar beach-bar sandbody reservoirs in fracturing in the future.

关 键 词：东营凹陷 滩坝砂岩储层 充满系数 压裂选层 

分 类 号：P618.13[天文地球—矿床学]