低渗透裂缝性油藏渗吸过程影响因素研究
Journal Title: Science Paper Online - Year 2009, Vol 4, Issue 11
Abstract
目前新探明的油藏近30.9%的储量都是低渗透油藏，由于低渗透裂缝性油藏基质渗透率低、裂缝分布复杂，常常会出现油井过早水淹导致开发效果差。而裂缝性油藏渗吸过程中受裂缝发育程度、毛管力大小、润湿性、初始含水饱和度、基质与裂缝渗透率之比等10多种因素影响。现在大多数研究都是基于物模方法，数模研究相对较少，现通过建立了典型的渗吸数值模型（岩心规模和近井规模）对多种因素进行了规律研究，为有效利用基质与裂缝渗吸作用对开发效果进行改善提供指导。通过研究完善，加深了对各影响因素的影响程度的认识，其中毛管力对渗吸至关重要，油水粘度比、基质与裂缝渗透率之比、注入速度、初始含水饱和度、温度是渗吸的敏感因素，其余因素影响不明显。
Authors and Affiliations
Xidong Cai, Yuedong Yao , Tongjing Liu
Keywords
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