特低渗透油藏CO2驱油多相渗流理论模型研究及应用  

Study on mathematical models for multi-phase porous flow in CO_2 drive of extra-low permeability reservoir and field application

作　　者：程杰成[1] 朱维耀[2] 姜洪福[1] 

机构地区：[1]大庆油田有限责任公司,黑龙江大庆163453 [2]北京科技大学土木与环境工程学院,北京100083

出　　处：《石油学报》2008年第2期246-251,共6页Acta Petrolei Sinica

基　　金：国家科技支撑计划“二氧化碳气驱提高采收率试验研究”(2006BAB03806)项目资助

摘　　要：根据一系列实验成果,对特低渗透油藏CO_2驱油渗流数学描述进行了理论研究,建立了特低渗透油藏CO_2驱油渗流数学模型。该模型能反映特低渗透储层CO_2混相和非混相驱油过程中油和CO_2的混相作用以及水、油、溶剂(CO_2)的相互作用与传输、质量的相互转换,包括对流扩散、质量转换和气、液间的转换,并能反映各相流体的非达西渗流、相对渗透率及有效黏度等特性。运用该模型在扶杨油层进行了注CO_2开发试验,取得了较好效果。The variation of multi-phase porous flow in CO2 drive of extra-low permeability reservoir was studied on the basis of the experiment results of porous flow mechanism and property. A series of mathematical models for describing the parameters of CO2 drive were established on the basis of porous flow mechanism, phase behavior, convection, difuction, non-Darcy flow, transform dynamics and fluid mechanics. The theoretical models can express the physical properties such as mixed phase of oil and CO2, interaction and conversion of water, oil and CO2, mass transformation of gas and fluid. Those models were applied in the extra-low permeability oilfield of CO2 drive reservoir of Fuyang Oilfield, and good results have been achieved.

关 键 词：特低渗透油藏 二氧化碳驱油 多相渗流理论 数学模型 扶杨油层 驱油试验 

分 类 号：TE34[石油与天然气工程—油气田开发工程]