当取心钻具采用双层管时，钻进所用的钻头就需要用普通双管钻头。
Conventional double tube bits should be used as bits for drilling, while coring tool is double tube.
基岩钻探方法以采取普通硬质合金清水回转垂直取心钻进，覆盖层采用干钻。
For bedrock drilling ordinary hard alloy driller can be adopted for vertical core-drilling with the addition of clear water during rotation. for overburden dry drilling process can be adopted.
他们沉降下去网、挖掘机、深海温度测量器、静态照相机、水瓶、以及取心钻管和测流计。
They lowered nets, dredges, bathythermographs, still cameras, water bottles, coring pipes, and current meters.
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.
论文分为取心钻具和泥浆两部分，通过理论分析到实验的方法来完成取心钻具的设计与泥浆体系的建立。
Paper is divided into two parts, core drill equipment and mud system. Through theoretical analysis to experimental method to complete the design of core drilling and mud system.
介绍了SDQ- 91型随钻测量定向取心钻具的特点、定向取心器的研制、随钻测量仪的选型与改进等。
This paper briefly introduces the design of SDQ-91 directional coring apparatus, selection of SDQ-91 borehole measuring instrument and its improvement.
通过对沥青路面上钻取的非干燥试件进行风干和烘干试验，计算不同试验条件下心样的毛体积相对密度和压实度。
By the density test of blow-drying and stoving of non-aridity core sample from asphalt pavement, the bulk volume relative density and compactness can be calculated under different test conditions.
针对某含金矿地层蚀变强烈，岩矿层硬、碎、软硬不均、取心困难的特点，研制了ZJS系列钻具。
ZJS series of core barrels are developed to cope with strongly altered gold ore and body which is hard, brittle, of alternate hardness and difficult to core.
该文介绍了一种对取心井段进行气体和钻时参数的回归法，通过回归处理可使参数更接近实际情况。
The paper introduces a regression method for the parameters of gas logging and ROP in the coring interval. Through the regression of them, they can be very close to the actual value.
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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