苏北低渗透油藏CO_2吞吐矿场试验  

Field Test of CO_2 Huff-Puff in Subei Low Permeability Reservoir

作　　者：赵军胜 钱卫明 郎春艳 

机构地区：[1]新星公司华东石油局试采大队

出　　处：《断块油气田》2003年第1期73-75,共3页Fault-Block Oil & Gas Field

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.

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 

分 类 号：TE357.45[石油与天然气工程—油气田开发工程]