摘要
以长庆安塞油田和吉林两井油田的实际资料为依据 ,利用谢尔卡乔夫公式、前苏联经验公式以及国内经验公式 ,对低渗透油藏压裂井网的水驱采收率与井网密度关系进行了探讨。结果表明 ,对于常规方式注水开发井网 ,在利用经验公式计算不同井网密度下水驱采收率时 ,前苏联经验公式计算结果明显偏大 ,而谢氏公式偏小 ,国内经验公式相对比较可靠 ;对于压裂注采井网 ,特别是对实施大规模压裂的低渗透油藏注采井网 ,利用已有经验公式计算水驱采收率或进行经济评价时有一定偏差。因此 。
On the basis of the true data of Ansai Oilfield in Chang qing and Liangjing Oilfield in Jilin, using XIE formula,former Soviet empirical formula and domestic empirical formula, a discussion on the relation between waterflooding recovery and well spacing of fracturing well pattern of low permeable reservoir is made. As the result indicates, for conventional water injection developing well spacing, if use empirical formula to calculate waterflooding recovery in different well spacing, the calculating result of former Soviet empirical formula is on the high side obviously, while that of XIE formula is on the low side, and the domestic empirical formula is relative reliable. For fracturing injection production pattern, especially for those of low permeable reservoir having been fractured in a large scale, using known empirical formula to calculate water flooding recovery or make economic evaluations has some error. Therefore, it is essential to establish an empirical formula for fracturing injection production pattern and well spacing of low permeable reservoir.
出处
《大庆石油地质与开发》
CAS
CSCD
2002年第2期19-20,共2页
Petroleum Geology & Oilfield Development in Daqing
关键词
低渗透油藏
压裂井网
水驱采收率
井网密度
low permeable reservoir
fracturing pattern
water flooding recovery
well spacing
