基于多指标的致密油藏CO_2吞吐影响因素及筛选方法  

Influence Factors and Screening Method of CO_2 Huff & Puff in Tight Oil Reservoir Based on Multi Index

作　　者：何应付[1] 赵淑霞[1] 

机构地区：[1]中石化石油勘探开发研究院,北京100083

出　　处：《重庆科技学院学报（自然科学版）》2018年第1期40-44,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项"鄂尔多斯致密低渗油气藏注气提高采收率技术研究"(2016ZX05048-003)

摘　　要：基于层次分析法,建立了CO_2吞吐多指标综合评价函数。在此基础上采用正交实验设计和数值模拟方法,分析并指出致密油藏多级压裂水平井CO_2吞吐效果的主控因素为原油饱和度、天然裂缝密度、原油黏度、油藏厚度等;采用Box-Behnken实验设计和数值模拟技术相结合的方法,建立了致密油藏CO_2吞吐多指标综合评价函数计算的代理模型。根据油井基础参数,利用该代理模型可快速对油井CO_2吞吐效果进行预测并排序。Based on the analytic hierarchy process, a multi index comprehensive evaluation function of CO2 huff and puff is proposed in this paper. Orthogonal experimental design method and numerical simulation are adopted to ana- lyze the main controlling factors of CO2 huff and puff in multilevel fractured horizontal well in tight reservoir. Ac- cording to the resuhs, the most important factors of CO2 huff and puff in tight reservoirs are oil saturation, natural fracture density, oil viscosity and reservoir thickness. Combined Box - Behnken experimental design method with numerical simulation, a surrogate model is established to calculate the new evaluation parameters of CO2 huff and puff in tight oil reservoir. The established model can be used to predict and sort the oil well CO2 huff and puff quickly according to the basic parameters of production well.

关 键 词：致密油藏 CO2吞吐 多指标体系 影响因素 油藏筛选 

分 类 号：TE348[石油与天然气工程—油气田开发工程]