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.
对那些深埋的矿物，就用地球物理勘探法来获取资料，如常用的地震勘探技术和钻取岩心法。这些技术对于找矿是最有用的。
For the buried minerals geophysical techniques are used to get information. For example, seismic technique and core drilling are often used. These techniques are the most important in prospecting.
根据科学钻探对岩心的特殊要求，认为金刚石取心钻头是科学深钻取心钻进较理想的选择。
Diamond core bit is preferred for coring operation in terms of the special requirements of scientific drilling.
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。
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.
塔深1井是亚洲最深的科学探索井，该井侧钻饶障后造成的井眼轨迹易使取心工具产生横向震动，对岩心起破坏作用；
The well track of Tasheng well 1 after sidetracking causes the coring tools transverse vibration, thereby destroy the coring yld.
塔深1井是亚洲最深的科学探索井，该井侧钻饶障后造成的井眼轨迹易使取心工具产生横向震动，对岩心起破坏作用；
The well track of Tasheng well 1 after sidetracking causes the coring tools transverse vibration, thereby destroy the coring yld.
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