地层原始渗透率越低，地层渗透率降低程度越大；
The higher the salinity and lower the initial formation permeability, the greater the permeability reduction.
同时这两各方面相互作用致使地层有效渗透率降低。
Meanwhile, the two aspects interact with each other, which make the effective permeability decreases.
井底附近地层渗透率降低比改善对调查半径的影响要大。
If skin factor of formation damage is more, its radius of investigation is less.
井底附近地层渗透率降低程度、范围愈大 ，则调查半径愈小 ；
The radius of investigation depends on the extent and scope of formation damage.
钻井后因应力集中产生的压密效应，使地层渗透率降低，影响油井产量。
Formation permeability is decreased and well production is affected due to compaction effect caused by stress concentration after drilling.
实验结果表明：濮城油田储层岩石在大量注入水冲刷下，会导致渗透率降低。
The result of experiment shows that permeability reduction will be caused by reservoir rocks under flushing of great amount of injection water in Pucheng Oilfield.
在近井地带由机械因素造成的渗透率降低，如碎片的驱替堵塞射孔孔眼或地层。
The reduction in permeability in the near-wellbore area resulting from mechanical factors such as the displacement of debris that plugs the perforations or formation matrix.
当地层受到严重损害时，应考虑地层损害表皮系数或渗透率降低对调查半径的影响。
When the formation damage is very serious, the effect of the skin factor for formation damage or permeability decreased on radius of investigation should be considered.
当地层受到严重损害时，应考虑地层损害表皮系数或渗透率降低对调查半径的影响。
When the formation damage is very serious, the effect of the skin factor for formation damage or permeability decreased on radius of investigation should be consid...
物性差的储层，渗透率增加幅度小，更差储层由于地层污染、堵塞，甚至存在渗透率降低现象。
The permeability increased a little in the reservoirs with poor physical property. And the permeability even decreased in the poorest reservoirs for formation pollution and plugging.
注入流体矿化度与储层中的粘土矿物不配伍时，会引起粘土矿物水化膨胀和分散，导致渗透率降低。
When the salinity of injected fluid is not compatible with clay minerals in a reservoir, hydrated swell and dispersion of the clay minerals are caused, which makes permeability decreasing.
腐蚀产物与注入水的结垢造成了管线的堵塞，并且注入水在储层内结垢是造成储层渗透率降低的主要原因。
Corrosion products and filth lead to pipeline jam, and scaling inside the reservoir is the most important reason.
水相圈闭损害主要表现在两个方面，内部表现为可动气量的减少和气相渗透率的下降，外部表现为产气量的下降和气藏采收率的降低。
Aqueous trapping display in two aspects, one is the reduction of mobile gas and the degression of gas permeability, the other is the decline of gas production rate and the decrease of gas recovery.
随着用于实验的流体矿化度的逐渐降低，岩心渗透率持续下降，且当流体矿化度急剧降低时，岩样水敏性损害加剧。
Core permeability lowers along with the decreasing salinity of fluid used in the experiment, and water sensitivity damage intensifies when fluid salinity decrease sharply.
因此，当边水和底水进入储层发生水淹后，气相渗透率将极大降低，存在较强的水锁效应。
So, after reservoir watering out as edge water and bottom water enters, the gas phase permeability will decrease greatly, and strong water lock effect will happen.
大量实验表明：当油藏生产原油时，随着地层中流体压力的降低，油层的孔隙度和渗透率下降，特别是在异常高压油藏中尤为显著。
Many experiments show that: when a well produces oil from a reservoir, the porosity and permeability will decrease, as fluid pressure drops, especially for reservoirs with abnormal high pressure.
实验样品相关测量数据说明，样品液相渗透率的降低与样品的阳离子交换量有关。
The pertinent data from the plugs show that the decrease of the fluid permeability is dependent on the cation exchange capacity of the core samples.
实例分析证明，内区的低渗透率会急剧降低无阻流量。
The analysis of example proves that the low permeability of interior zone will sharply reduce the maximum production rate.
因此，防h2s腐蚀的基本方法：减少水泥石中钙硅比和降低水泥石渗透率。
Therefore, decreasing the permeability of cement stone and reducing the ratio of calcium to silicon ratio become the basic ways to inhibit the corrosion of H2S.
结果表明：电场作用能有效降低双电层作用对排土场渗透率的影响；
The results show that the permeability of ore dump by electronic double layer can be depressed by effect of electric field.
油藏采出流体后，地层压力下降，渗透率和油井产量都会有不同程度的降低，即出现所谓的应力敏感。
One of main damage factors in low-permeability sandstone oil pool is pressure sensitivity, degree of which is dependent on rocks features.
竹材液体渗透效果随含水率的升高而降低。
The liquid osmotic effect of bamboo sample decreases with the increase of its moisture content.
渗透率级差越大，低渗透层相对吸水量提高，高渗透层相对吸水量降低幅度越大，调剖效果越显著。
The water intake capacity of the intermediate and low permeable strata increasing and the water intake capacity of the high permeable strata reducing are marked by the permeability grade increasing.
结论：早期鼻饲温开水胃肠内补液是抢救HNDC的有效措施，能显著降低患者的血浆有效渗透压，降低病死率，方法安全、可靠、实用。
Conclusion:Early nasal feeding of warm water can save the life of patient with HNDC effectively. This method is safe, accurate and practical.
因此，可能存在孔隙率增加而渗透性降低的现象。
So, there may exist the phenomenon of permeability reduction with the porosity increase.
及(趾)甲，结构紧凑，主要是阻碍其口服药物使用外用药物，因此降低了对外部单独使用治愈率，渗透。
And (toe) a compact, mainly hindered the use of oral drugs for external use drugs, thus reducing the external alone cure rate, penetration.
基质渗透率的降低、润湿性的改变以及毛细管压力的增大是储层驱油效率降低的主要因素。
Decrease of the oil displacement efficiency of the damaged reservoirs is mainly resulted from the reduction of matrix permeability, change of wettability and increase of capillary pressure.
基质渗透率的降低、润湿性的改变以及毛细管压力的增大是储层驱油效率降低的主要因素。
Decrease of the oil displacement efficiency of the damaged reservoirs is mainly resulted from the reduction of matrix permeability, change of wettability and increase of capillary pressure.
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