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本文讨论了泥桨滤失液侵入油层的饱和度分布、侵入深度和流体分布剖面,并研究滤失液对储层物性的影响文章指出,相渗透率变化是油层损害的主要特征,在低渗低孔油藏,由于毛管效应增强,更加深了对地层的损害文章从两个方面分析后表明,滤失水的侵入驱替与驱排侵入的滤失水的过程是不可逆的。因而恶化了排液特性从保护油层观点考虑,研究排出特性比侵入特性更为重要本文还从侵入特性区提出评价油层损害的不同计算法。
In this paper, we discuss the saturation distribution, penetration depth and fluid distribution profile of mud filtration fluid intruding oil reservoir, and study the effect of fluid loss on reservoir physical properties. The article points out that the change of permeability is the main characteristic of reservoir damage, Low-porosity reservoirs, due to the enhanced capillary effect, further deepen the damage to the formation. The analysis of the two aspects shows that the infiltration of lost water is not irreversible with the drainage of lost water driven by drainage. Thereby deteriorating the drainage characteristics From the point of view of protecting the oil layer, it is more important to study the discharge characteristics than the intrusion characteristics. In this paper, different calculation methods for evaluating the damage of the oil layer are also proposed from the intrusion characteristics area.