摘要
鉴于气驱技术对开发低渗透油藏的良好效果,运用了目前最可靠的测量最小混相压力的细管实验方法,进行了对CO2气体与原油最小混相压力的预测研究。详述了细管实验的实验条件、实验方法、具体步骤与原理。分析结果得到了注采压差、采油速度和采收率随驱替压力的变化规律,并测量了原油与CO2作用的最小混相压力,给出了合理的驱替压力范围,为油藏开采提供了参考依据。
Gas drive has shown good effect in developing low permeability reservoirs. The minimum miscible pressure (MMP) between CO2 gas and crude oil is predicted by using slim tube experiment method which is currently the most reliable measuring method for MMP. This paper details the condition,method,procedure and principle of slim tube experiment,analyzes the changes of injection-production pressure difference,oil recovery rate and recovery factor along with displacement pressure,measures the MMP between crude oil and CO2,presents a rational range of displacement pressure,and provides references for reservoir exploitation.
出处
《特种油气藏》
CAS
CSCD
2010年第2期95-97,104,共4页
Special Oil & Gas Reservoirs
基金
国家自然科学基金"低渗透油藏储层特征及流体运动渗流机理研究"(10672187)
中国石油天然气股份公司重点攻关项目"特低渗透储层评价方法
标准及渗流机理研究"(06-02/A-02-01)
关键词
CO
细管模型
混相驱油
物理模拟
混相压力
CO2
slim tube model
miscible displacement
physical simulation
miscibility pressure
