摘要
针对高含水后期油田含水上升快的问题,以大庆油田喇8-182井区为例,进行了泡沫驱进行注入方式和注入参数的优选,并进行了开发效果的预测,给出了最优方案中心井区的剩余油分布。根据试验区地质特点,从经济效益角度出发,优选出泡沫与水交替注入方式,注入参数为单井注气量3000m3/d,起泡剂浓度1000mg/L,交替注入半周期20d。根据预测结果,此方案到2025年泡沫驱阶段采出程度23.59%,与水驱相比,采出程度提高15.01个百分点。
Aiming at problem of rapidly-increasing water cut at oil field later high water-cut stage,taking the La8-182 well block of Lamadian oilfield for example,injection mode and injection parameters are optimized.The development effects have been predicted and the residual oil distribution has been given.Taken the geologic characters of pilot site and economic aspect into consideration,foam and water alternating injection has been chosen,and the injection parameters are that daily gas injection rate is3000m3/d,foam agent concentration is 1000mg/L and alternating injection semiperiod is 20 d.According to the results of prediction,by the end of 2025,the degree of reserve recovery of foam flooding is 23.59%and enhances recovery 15.01% contrasting to water flooding.
出处
《内蒙古石油化工》
CAS
2015年第5期30-31,共2页
Inner Mongolia Petrochemical Industry
关键词
泡沫驱
数值模拟
交替注入
Foam flooding
Numerical simulation
Alternating injection
