三叠系长6特低渗油藏二氧化碳驱最小混相压力研究  

Minimum Miscibility Pressure of Carbon Dioxide Flooding of Ultra-Low Permeability Triassic Chang6 Reservoirs

作　　者：刘蕾[1,2] 武平仓[1,2] 杜朝峰[1,2] 王丽莉[1,2] 张康[1,2] 徐飞艳[1,2] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院 [2]低渗透油气田勘探开发国家工程实验室

出　　处：《低渗透油气田》2013年第1期89-91,79,共4页

摘　　要：本文综合分析了见诸国外文献的几种二氧化碳驱油最小混相压力预测方法的应用条件，找出了适用于预测长庆油田特低渗油藏原油与二氧化碳最小混相压力的Sliva方法，并采用该方法对不同区块原油的CO2驱最小混相压力进行了预测，预测结果表明：靖安油田五里湾一区、安塞油田王窑、杏河区以及姬塬油田的地层压力都低于该区块原油与CO2的最小混相压力，在当前油层条件下，难以达到混相。西峰油田的地层压力高于区块的最小混相压力，可以达到混相条件。The application conditions for prediction methods of minimum miscible pressure in carbon dioxide driven wells, which ap- pear in the foreign literature, have been analyzed in a comprehensive manner. The Sliva method, which is applicable to predicting the minimum crude oil ＆ carbon dioxide miscible pressure in the extra-low-permeability reservoir of Changqing Oilfield, has been found. Also this method has been applied to predicting the minimum miscible pressure of the CO2-driven crude oil. Results of the prediction show that the formation pressures of the Wuliwan No.1 area of Jing＇an 0ilfield, Wangyao-Xinghe area of Ansai Oilfield and Jiyuan Oilfield are all lower than the minimum crude oil ＆ carbon dioxide miscible pressures of these areas, and under current formation conditions, it is hard to achieve the miscible phase. The formation pressure of Xifeng Oilfield is higher than the block＇s minimum miscible pressure and the miscible phase can be achieved.

关 键 词：二氧化碳 混相驱 最小混相压力 预测 

分 类 号：TE357.45[石油与天然气工程—油气田开发工程]