摘要
通过选井选层研究结果,建立低渗透油藏目的区块精细地质模型。运用ECLIPSE中PVTi和E300模块相结合的方法,建立三维三相组分数值模拟模型,模拟水驱后CO2吞吐过程,以增油量和换油率为依据评价吞吐效果。研究表明:CO2注入量、注入速度以及闷井时间均为影响单井CO2吞吐效果的重要因素。通过模拟计算确定CO2注入量、注入速度以及闷井时间的最优值。该研究工作可为同类低渗透油藏实施CO2吞吐工艺提供有益的借鉴。
A fine geological model is established for the target block of a low permeability reservoir through selection of wells and layers. A 3-dimensional 3-phase compositional model is set up by using PVTi and E300 in ECLIPSE to simulate CO2 huff and puff after water flooding,and to evaluate the effect of CO2 huff and puff according to incremental oil and oil replacement rate. The study shows that CO2 injection rate and soak time are important factors affecting single well CO2 huff and puff. The optimal values of CO2 injection rate and soak time are determined through analog calculation. This study has provided useful reference for implementation of CO2 huff and puff in similar low permeability reservoirs.
出处
《特种油气藏》
CAS
CSCD
2010年第5期70-72,共3页
Special Oil & Gas Reservoirs
基金
国家自然科学基金项目"低渗透油层提高驱油效率的机理研究"(50634020)
关键词
低渗透油藏
CO2吞吐
数值模拟
换油率
增油量
树16区块
low permeability reservoir
CO2 huff and puff
numerical simulation
oil replacement rate
incremental oil
Shu 16 block
