CO2吞吐候选油藏筛选综合评价方法

Integrated evaluation method of CO^₂ injection stimulation in
screening candidate reservoirs

杨军 张烈辉 熊钰 刘娅 钟成冬

西南石油大学油气藏地质及开发工程国家重点实验室，四川 成都 610500 西南石油大学研究生院，四川 成都 610500 新疆油田公司采油一厂，新疆 克拉玛依 834000

CO2单井吞吐工艺增油技术是一种提高低渗透、复杂小断块油藏采收率的有效方法。目前CO2吞吐候选油藏的筛选和评价方法还不是很成熟。通过详细地分析影响吞吐效果的油藏因素，建立了相应的筛选指标体系及量化方法，采用模糊综合评价方法对候选吞吐地层进行适应性评价。此方法能综合反映各油藏参数对CO2吞吐增产工艺的适宜度，并对4个实例油藏进行了多指标的综合评价，结果表明该方法是有效的、合理的。

CO₂ single well injection stimulation technology is an effective method for improving recovery in some small fault block
oilfields with low permeability. But for the moment it is not fully mature in screening and evaluating the candidate reservoirs for CO₂
injection stimulation. Through analyzing the effect of reservoir factors on the injection stimulation impact in detail, this paper has
built up the corresponding screening guidelines and quantifying method, and adopts the fuzzy integrated evaluation method to
evaluate the flexibility of the candidate injection stimulation reservoirs. It can synthetically reflect the fitness of each reservoir factor
for the CO₂ injection stimulation technic. The pplication in four practical reservoirs indicates that it is an effective and reasonable
method.