surface permeability

At present, the important parameters for evaluating the sealing ability of covering bed involve displacement pressure, porosity, permeability, density, mid-value semidiameter of pore, specific surface area and so on.

目前，评价盖层封闭能力的主要参数有岩石的排替压力、孔隙率、渗透率、密度、孔隙中值半径、比表面等。

The wettability alteration on rock surface induced by asphalting adsorption was the main cause of permeability reduction.

原油沥青质在油藏岩石上的吸附所引起的润湿性改变是导致储层油相渗透率降低，从而造成储层损害的一个重要原因。

Its action mechanism is targetting the cell membranes, combining with the ergot protein of the membrane surface, changing the permeability of cell membranes, potassium and sodium leakage, leading to the cell death.

其作用靶点为细胞膜，与细胞膜表面的麦角蛋白结合，改变细胞膜的通透性，使钾钠渗漏导致细胞死亡。

Near the d é collement structure surface, at the bottom of the Cambrian and the top of the Archean, developed an interjacent fractured zone which shows high porosity and high permeability.

构造破碎带附近古生界底部和太古宇顶部出现破碎带，表现为高孔隙度、高渗透率带。

Aim at the problem, after searching free surface by equivalent permeability coefficient, we search it again through move the spill point again and again until solve free surface.

本文提出了求解无压渗流自由面的一种新方法，在采用等效渗透系数法搜索到自由面后，通过反复移动溢出点再次搜索自由面，最终达到准确求解自由面的目的。