The measurement results showed that the invasion of the filtrates of oil-base mud and water-base mud has a considerable effect on oil phase permeability.
测定结果表明，试验所用的油基和水基泥浆滤液的侵入均对油相渗透率造成相当严重的损害。
Specific materials are available for all types of water - and oil-base mud systems and are evaluated in static filtration tests or in various dynamic filtration tests.
一些降滤失材料适用于所有水基和油基泥浆体系，可以通过静态滤失实验或各种动态滤失实验对这些材料进行评价。
A core taken so as to preserve the in-situ water saturation of the rock. A native-state core is usually drilled with oil-base mud or crude oil from the same reservoir.
使用油基泥浆或原油钻取的岩心，以保证岩心的含水饱和度与岩石在储集层状态的含水饱和度相同。
Since the purpose is to minimize alteration, a fresh core has often been drilled with a bland mud, either water - or oil-base, but with a minimum of chemical additives and weighting material.
其目的是为了将岩心的变化降到最低，通常用泥浆或水基、油基泥浆钻取岩心，但是使用少量的化学添加剂和加重物质。
Since the purpose is to minimize alteration, a fresh core has often been drilled with a bland mud, either water - or oil-base, but with a minimum of chemical additives and weighting material.
其目的是为了将岩心的变化降到最低，通常用泥浆或水基、油基泥浆钻取岩心，但是使用少量的化学添加剂和加重物质。
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