摘要
低渗透油田应用CO2 吞吐可以提高油井产量和油藏采收率。文中详细介绍了低渗透油藏开展CO2 吞吐试验的参数及效果评价 ,提出了低渗透油藏CO2 吞吐的选井条件。结果表明 ,1 2口低渗透试验井的平均CO2 换油率为 0 .6 7,累积经济效益为 6 8万元 ,按 1 2 0 0元 /t油价计算的投入产出比为 1∶1 .3 2。只要方法得当 ,该项技术具有适用范围广、投资少、规模小和见效快等特点 ,值得加大CO2 吞吐在低渗透油藏中的研究和推广力度。
CO 2 huff puff technique can increase the production of oil wells and enhance the recovery efficiency of reservoir in low permeability reservoir. The paper presents the parameters and result evaluation of CO 2 huff puff field test in low permeability reservoir, and provides well chosen conditions for low permeability reservoir. The results show that the average conversion rate from CO 2 to oil is 0.67 in 12 low permeability test wells , the cumulative economic benefit is 680 thousand RMB, and the input output ratio is 1∶1.32 if the oil price is 1200 RMB/t. The technique features wide application, low cost, small scale and quick efficiency, so it is worthy to further the study of the technique and extend its use in low permeability reservoir.
出处
《断块油气田》
CAS
2003年第1期73-75,共3页
Fault-Block Oil & Gas Field
关键词
低渗透油藏
CO2吞吐
现场试验
选井条件
苏北油田
矿场试验
Low permeability reservoir,CO 2 huff puff,Field test,Result analysis,Well chosen condition,Subei Oilfield.
