This paper presents a simplified mathematical model for describing the water block mechanism and its influences, based on Darcy's formula and relative permeability curve and capillary pressure curve.
根据达西公式及相对渗透率曲线和毛管压力曲线的表示式，提出了一个描述水锁机理及其影响因素的简化的数学模型。
Water - drive and nitrogen - drive experiments are performed to compare their displacement effects and study the displacing mechanism of ultra - low permeability reservoirs.
文中进行了水驱油和氮气驱油试验，以比较驱替效果，探究超低渗油藏的驱替机理。
The fluid flow properties and mechanism of fluid flow in low-permeability reservoir with fractured sandstones are complicated. The spontaneous imbibition of water is very important for oil recovery.
低渗透裂缝性油田开发比较复杂，其中水的自发渗吸对原油的开采十分有利。
For low permeability micro - fractured reservoirs drilling and completion operations, the solid phase invasive, stress-sensitive, water trapping is the main damage mechanism.
对于低渗微裂缝储层钻井完井作业而言，固相侵入、应力敏感、水相圈闭是主要损害机理。
For low permeability micro - fractured reservoirs drilling and completion operations, the solid phase invasive, stress-sensitive, water trapping is the main damage mechanism.
对于低渗微裂缝储层钻井完井作业而言，固相侵入、应力敏感、水相圈闭是主要损害机理。
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