基于层次分析的层状油藏采收率敏感性研究  

Analysis of Sensitivity of Oil Recovery of Layered Reservoir with AHP

作　　者：李玉红[1] 常毓文[1] 吴向红[1] 冯敏[1] 马凯[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《西安石油大学学报（自然科学版）》2016年第2期50-56,共7页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家科技重大专项"苏丹3/7区高凝油高效开发技术"(编号:2011ZX05032-002);国家科技重大专项"苏丹3/7区块Palogue油田大型高凝油油藏经济高效开发技术示范工程"(编号:2011ZX-050508)

摘　　要：针对储层和流体层间非均质性强、层间矛盾严重、层系划分、井网部署影响因素对层状油藏开发效果影响程度不一的问题,结合实际层状油藏的储层特点和开发特征,基于油藏数值模拟方法和层次分析理论,对海外H层状油藏采收率影响因素进行研究,评价H油藏采收率对储层渗透率级差、原油黏度级差、地层压力级差、油层厚度及采油速度等影响因素的敏感性。结果表明:层状油藏开发初期采油速度对采收率影响最为明显,但从油藏储层和流体特征出发,油藏采收率对流体黏度级差变化最为敏感,其次为渗透率级差和地层压力级差,受储层厚度级差的影响最小。Layered reservoir has the strong reservoir and fluid heterogeneity,therefore the influence factors of layer division and well pattern arrangement are many and complex,and the influence degree of the factors on the development effect of the layered reservoir is different. For this reason,taking overseas H reservoir as an example,the influence factors of the oil recovery of the reservoir are studied using oil reservoir numerical simulation and analytical hierarchy process based on the reservoir characteristics and the development characteristics of the H layered reservoir,and the sensitivity of the oil recovery of H reservoir to reservoir permeability difference,crude oil viscosity difference,formation pressure difference,oil layer thickness and oil production rate is evaluated. It is shown that： the effect of oil production rate on oil recovery is the most obvious in the early stage of the layered reservoir development; but in terms of reservoir and fluid characteristics,the oil recovery is the most sensitive to crude oil viscosity difference,the secondary sensitive factors are the reservoir permeability difference and the formation pressure difference are,and the oil layer thickness difference has minimum effect on the oil recovery of layered reservoir.

关 键 词：层状油藏 储层非均质性 流体非均质性 层次分析 采收率 

分 类 号：TE341[石油与天然气工程—油气田开发工程]