摘要
CO2吞吐是一种改善复杂油藏开发效果的有效方法,针对致密油藏多级压裂水平井的应用还不多见,其影响因素还不明确,潜力评价方法也不成熟。本文针对加拿大B油田实际情况,从转吞吐时机、周期注入量、注入速度和焖井时间四个方面对CO2吞吐的影响因素进行了综合分析。在此基础上,利用响应面方法建立了CO2吞吐潜力评价模型,提出了CO2吞吐潜力预测的新方法。
CO2huff and puff is an effective method for improving complex reservoir development effect. For the application of multi-stage fracture horizontal well in the tight reservoir are rare,and its influence factors is not clear,potential evaluation method is not mature. According to the actual situation of B oil field,four influence factors on the effect of CO2 huff and puff,such as time to huff and puff,injection volume,injection speed,soaking time are synthetically evaluated and analyzed. On this basis,established a potential prediction model of CO2 huff and puff for multi-stage fracture horizontal well,a new method was presented to predicted the latent capacity of CO2 huff and puff.
出处
《科学技术与工程》
北大核心
2014年第27期207-210,共4页
Science Technology and Engineering
基金
国家自然科学基金(863)(2009AA063406)资助
关键词
致密油藏
多级压裂水平井
CO2吞吐
数值模拟
换油率
tight oil reservoir
multi-stage fracture horizontal well
CO2 huff and puff
potential prediction model
oil chage rate
