摘要
在CO2理论埋存量计算过程中,以溶解形式存在的CO2埋存量占总埋存量的很大部分,计算这部分埋存量时最关键的2个参数是CO2在油、水中的溶解系数Cos和Cws。研究了CO2埋存量计算公式中涉及的溶解系数确定方法。确定了溶解度的计算模型,得到不同油藏条件下CO2在油和水中溶解系数的值;将其应用到埋存量计算公式中,得到不同油藏条件下CO2的埋存量。评估了国内某油田CO2理论埋存潜力和有效埋存潜力,并与基于类比法计算所得的结果进行比较,表明本计算方法正确可靠。
CO2 sequestration in the reservoir is an important way to reduce the CO2 emission. Many studies at home and abroad are concerned with the CO2 storage capacity and its calculation has a practical significance for China＇s CO2 emission reduction targets. The correction formula for CO2 storage and the determination of the dissolution coefficients in the formula are analyzed in this paper. The capacity of CO2 storage is mostly in the form of dissolved CO2, which should be carefully considered, and the calculation of this part of the capacity of COs storage is closely related to two parameters, that is, the dissolution coefficients Cws and Cos. The solubility calculation models developed by Zhenhao Duan and Haitao Xue were improved to obtain the dissolution coefficient Cws and Cos. Then, the dissolution coefficients were applied to a revised method of calculating the CO2 storage capacity under different conditions of oil reservoirs. The determination of CO2 dissolution coefficients Cws and Cos leads to a more accurate calculation of the CO2 storage capacity in oil reservoirs. Finally, the theoretical and effective CO2 storage capacity in a domestic Oilfield are compared with the evaluation results obtained by the analogy. The result shows that the calculation method is reliable.
出处
《科技导报》
CAS
CSCD
北大核心
2010年第1期98-101,共4页
Science & Technology Review
基金
国家重点基础研究发展计划(973计划)项目(2006CB705801)
2007年度教育部"新世纪优秀人才支持计划"项目
关键词
CO2埋存
理论埋存量
有效埋存量
溶解系数
埋存潜力
CO2 storage
theoretical storage capacity
effective storage capacity
dissolution coefficient
storage potential
