摘要
应用等值渗流阻力法全面考虑油水渗流阻力的影响,推导出了面积注水油藏见水前后油水井的单井产量公式。考虑水驱过程中油藏内各点含水饱和度的变化,应用物质平衡方法推导出了油井见水的开发时间的计算公式。在开发时间的计算公式中同时引入了面积修正系数并给出了五点井网和反七点井网面积修正系数的计算公式,使油井见水的开发时间的计算精度大大提高——反七点井网的见水时间可减小偏差21%、五点井网的见水时间可减小偏差57%.计算实例表明,应用改进后方法得到的计算结果符合水驱油藏的开发规律。
The single well production formulae for pattern waterflooding reservoirs before and after water breakthrough were derived using equivalent filtrational resistance approach to consider the oil-water filtrational resistances.The theoretical formula for water breakthrough time of a producer was derived by using material balance equation and considering the varied water saturations in various points of a reservoir during waterflooding process,in which the modified area coefficient was introduced and the amended formulae for five-spot and inverted seven-spot patterns were given.The case study shows that the calculation accuracy of water breakthrough time can be greatly improved by deviation reduction of 21%for inverted seven-spot pattern and 57% for five-spot pattern.The results are accordant with the exploitation reality of waterflooding reservoirs.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2012年第2期189-192,共4页
Xinjiang Petroleum Geology
基金
国家科技重大专项(2008ZX05024-004-002)
关键词
开发指标
单井产量
开发时间
面积注水
development index
single well production
development phase
pattern water-flooding
作者简介
吕爱民（1970-），男，河北乐亭人，副教授，博士，油气田开发，（Tel）0546--8391192（E—mail）hdpulam@163.com.
