A quick evaluation model for CO_2 flooding and sequestration  

作　　者：Yao Yuedong Ji Zemin 

机构地区：[1]Key Laboratory of Petroleum Engineering, Ministry of Education, China University of Petroleum, Beijing 102249, China

出　　处：《Petroleum Science》2010年第4期515-523,共9页石油科学（英文版）

基　　金：support from the National Basic Research Program of China (2006CB705805)

摘　　要：CO2 flooding not only triggers an increase in oil production,but also reduces the amount of CO2 released to the atmosphere （by storing it permanently in the formations）.It is one of the best ways to use and store CO2.This paper firstly selects the key factors after analyzing the factors influencing the CO2 storage potential in the formations and oil recovery,and then introduces a series of dimensionless variables to describe reservoir characteristics.All influencing factors with varying values are calculated through a Box-Behnken experimental design.The results are interpreted by a response surface method,and then a quick screening model is obtained to evaluate the oil recovery and CO2 storage potential for an oil reservoir.Based on the evaluation model,sensitivity analysis of each factor is carried out.Finally,research on CO2 sequestration and flooding in a typical reservoir indicates that the evaluation model fits well with the numerical simulation,which proves that the evaluation model can provide criteria for screening attractive candidate reservoirs for CO2 sequestration and flooding.CO2 flooding not only triggers an increase in oil production,but also reduces the amount of CO2 released to the atmosphere （by storing it permanently in the formations）.It is one of the best ways to use and store CO2.This paper firstly selects the key factors after analyzing the factors influencing the CO2 storage potential in the formations and oil recovery,and then introduces a series of dimensionless variables to describe reservoir characteristics.All influencing factors with varying values are calculated through a Box-Behnken experimental design.The results are interpreted by a response surface method,and then a quick screening model is obtained to evaluate the oil recovery and CO2 storage potential for an oil reservoir.Based on the evaluation model,sensitivity analysis of each factor is carried out.Finally,research on CO2 sequestration and flooding in a typical reservoir indicates that the evaluation model fits well with the numerical simulation,which proves that the evaluation model can provide criteria for screening attractive candidate reservoirs for CO2 sequestration and flooding.

关 键 词：Evaluation model enhanced oil recovery CO2 sequestration Box-Behnken design response surface method 

分 类 号：TE357.45[石油与天然气工程—油气田开发工程] X16[环境科学与工程—环境科学]