摘要
周期注水能够提高非均质储层的驱油效率。为了改善萨南开发区南六区行列井网厚油层高含水开发后期的开发效果，在剩余油分布规律分析的基础上，应用精细地质研究成果和数值模拟技术，优化行列井网周期注水方案，优选了最佳的注水方式、注水半周期和注水强度，并总结了试验区开展周期注水后动态规律的变化，对行列井网实施周期注水的方法取得了认识：行列井网双井交替注水方式对开发效果的改善明显好于单井交替注水；注水半周期为3个月，注水强度提高1．93倍，周期注水时间为38，可提高采收率0．3个百分点。实践证明行列井网高含水后期采取周期注水方式是进一步挖掘剩余油潜力的一项经济有效的调整措施。
Cyclic water flooding can increase oil displacement efficiency of heterogeneous reservoir. In order to improve development effect of thick reservoir in line pattern in Nan 6 block of Sanan development area, based on distribution law of remaining oil in late stage of high water cut, by using fine geologic study and numerical simulation, cyclic water flooding program in line pattern in late stage of high water cut is optimized. Besides, optimum injection pattern and half-period and injection intensity are optimized. In the end, this paper concludes the change of performance after cyclic water flooding in test area, and acquires the following understandings for cyclic water flooding in line pattern： twin wells by water alternating injection in line pattern have higher displacement efficiency than that of single well, water flood cycle is 3 months, intensity of water injection increases by 1.93 times, time of water injection is 3 years, and recovery is increased by 30%. Practice proves that cyclic water flooding technique is an economic and useful adjustment measurement for further development of remaining oil at the late stage of high water cut.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2009年第2期59-62,共4页
Petroleum Geology & Oilfield Development in Daqing
关键词
高含水
井网
周期注水
采收率
数值模拟
萨南开发区
high water cut
well pattern
cyclic water flooding
recovery
numerical simulation
Sanan development area
