摘要
通过室内水驱油实验测定真实岩心,可得到某油田含水从0到99.99%不同注水倍数下的洗油程度。根据线性插值理论,运用注水倍数下洗油程度的现场测试岩心资料,对实际注水倍数进行插值求其对应的洗油程度。研究洗油程度与波及程度对采出程度贡献值的大小,剖析这两个参数对提高采出程度的潜力(x)。基于室内实验及矿场实际测试资料,相同采出程度下,当x≤-15%时,后续调整方向为扩大波及程度;当-15%<x<15%时,后续调整方向为扩大波及程度和提高洗油程度兼顾;当x≥15%时,后续调整方向为提高洗油程度。某油田14口井分别对应射开5个层位在后续调整中,潜力在于提高洗油程度的比例为36.67%,潜力在于扩大波及程度的比例为26.67%,潜力在于扩大波及程度和提高洗油程度兼顾的比例为36.66%。该研究成果为油田后续调整提供了方向和依据。
The core was determined by indoor oil displacement experiment, the level of degree of oil displacement of an oil field with water cut changing from 0% to 99.99% was obtained under different water injected volume. According to the theory of linear interpolation and applying field core test data of the level of degree of oil displacement under different water injected volume, the level of degree of oil displacement corresponding to actual water injected volume was calculated by interpolation. Contribution value of degree of oil displacement and degree of water flood on degree of reserve recovery was studied; potential （x） of two parameters for increasing degree of reserve recovery was analyzed. Based on laboratory experiment and actual test data of oil field, under the same condition of degree of rescue recovery, ifx is equal or lesser than -15%, subsequent direction of adjustment is expanding degree of water flood; ifx is greater than -15% and lesser than 15%, subsequent direction of adjustment is expanding degree of water flood and enhancing degree of oil displacement; and ifx is equal and greater than 15%, subsequent direction of adjustment is enhancing degree of oil displacement. In subsequent adjustment of 14 oil wells corresponding to 5 perforation layers in one oil field, potential of enhancing degree of oil displacement is 36.67%, potential of expanding degree of water flood is 26.67%, potential of expanding degree of water flood and enhancing degree of oil displacement is 36.66%.
出处
《当代化工》
CAS
2016年第6期1240-1243,共4页
Contemporary Chemical Industry
基金
东北石油大学研究生创新科研项目
低渗透油田强势渗流通道表征方法与治理策略研究
项目号:YJSCX2016-014NEYU
关键词
采出程度
注水倍数
洗油程度
波及程度
潜力
degree of reserve recovery
water injected volume
degree of oil displacement
degree of water flood
