深孔钻进的实现，为深部地质找矿提供可靠资料。
The deep hole drilling provides the reliable data for the deep ore-prospecting.
回转配用泥浆泵进行岩石钻进及第四纪松散地质层的泥浆护壁和深孔钻进。
H. Rotary used in conjunction with slurry pump can be used for the drilling of rock, slurry wall for loosen stratum of the Quaternary period and deep hole drilling in.
用途： 适于镶制重型凿岩机用的钻头，例如深孔钻进，凿岩车等用的钎头。
Application:it is fitting for serving as drill heads of heavy rock-digging. machines.
本文介绍深孔定向钻进技术的原理、典型的设备选择、工艺、测量系统以及该技术在煤矿工程中的应用。
This paper briefs the long borehole directional drilling technology, selection of typical equipment, process, measuring system and application in coalmines.
运用气举反循环钻进，在满足一定条件下适当增加双壁钻具长度即可得到较大钻进孔深。
Apply air reverse circulation drilling, appropriate increase length of twofold wall drill tools under certain conditions, may be drilling much deeper.
热熔法是一种全新的碎岩方法，在南极中深孔的钻进中起了重要作用。
Hot melting is a completely new method to fracture rocks and has played a very important role in drilling medium deep and deep holes in Antarctic area.
钻进完成后，停15-40分钟后，（根据孔深决定时间）用钻机打捞一次沉降下去的砂子等杂质，不要控浆。
Stop for 15-40min (depending on the depth of holes) after completion of drilling, and use the drilling rig to get out the impurities such as sand, etc. settled without controlling the mud.
笔者主要阐述了数控深孔钻床在使用枪钻进行深孔加工时工艺参数的选择，寻求最佳加工性能，以求达到快速加工、提高效率的目的。
Hollow shaft type high pressure cooling system is used to solve the problem in deep drilling, as well as gun-drill with open groove, proper cutting consumption and single tool withdraw are applied.
提高绳索取心钻进效率要做到：一是根据孔深、钻孔孔径、钻孔所遇地层及其岩性的完整程度、构造特点、风化带发育深度等选择套管的直径及下入深度；
To raise wire-line drilling efficiency need to: 1. Select casing diameter and depth according to drilling depth, diameter, strata drilled and rock integrity, structure features, weathered layer depth;
提高绳索取心钻进效率要做到：一是根据孔深、钻孔孔径、钻孔所遇地层及其岩性的完整程度、构造特点、风化带发育深度等选择套管的直径及下入深度；
To raise wire-line drilling efficiency need to: 1. Select casing diameter and depth according to drilling depth, diameter, strata drilled and rock integrity, structure features, weathered layer depth;
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