中国石油大学学报（自然科学版）2018，Vol.42Issue(4)：67-74,8.DOI:10.3969/j.issn.1673-5005.2018.04.008
界面张力对低渗亲水储层自发渗吸的影响
Influence of interfacial tension on spontaneous imbibition in low-permeability water-wet reservoirs
摘要
Abstract
In order to reveal the influence of the interfacial tension between fracturing fluid and rock surface on spontaneous imbibiton in low-permeability water-wet reservoirs, a spontaneous imbibition model was constructed upon a modified LW im-bibition model, considering hydrostatic pressure and flow resistance based on the fractal theory, and the relationship between spontaneous imbibition volume and time was then described using the model.The influence of the interfacial tension on spon-taneous imbibition volume was analyzed and revealed, and the imbibition model was verified in comparison with the laboratory data.The experimental and modeling results indicate that the impact of the interfacial tension on the imbibition volume is not monotonous.The capillary force and flow resistance of the oil phase increase with the interfacial tension, while the imbibition volume increases initially and then declines.The value of the interfacial tension can be optimized to obtain the best imbibition effect, and to maximize the imbibition volume and oil recovery.关键词
自发渗吸/低渗/核磁共振/渗吸体积/分形理论Key words
spontaneous imbibition/low-permeability reservoir/nuclear magnetic resonance/imbibition volume/fractal the-ory分类
能源科技引用本文复制引用
李爱芬,何冰清,雷启鸿,李楷,王桂娟..界面张力对低渗亲水储层自发渗吸的影响[J].中国石油大学学报（自然科学版）,2018,42(4):67-74,8.基金项目
国家自然科学基金项目(51774308) （51774308）
国家科技重大专项(2016ZX05014,2016ZX05009-001) （2016ZX05014,2016ZX05009-001）
