1.DST (Drill Stem Test), a fast test for show of oil and gas while drilling.
DST (Drill-Stem-Test),即中途测试,是指油井在钻井过程中,对有油气显示的地层进行快速测试。
2.The extension drill rod which can be used for higher capacity drill,the drill hole can be extended to sezeral meetrs, when drilling the straight hole,the core lifter can help coring.
选用加长钻杆于较大能力的钻机，可将钻孔延深至数米，钻垂直孔时，可采用取芯器配合取芯。
3.Abstract: This paper introduces the development and using of the MK series of fully hydraulic drill,and compares its using effect with LMC75 drill from Australia,LHD drill from America.
文摘:介绍MK系列全液压钻机的开发和应用，并就其使用效果和澳大利亚LMC75、美国的LHD钻机展开比较。
4.Based on the analysis of the present drill point grinding methods, in order to improve the drilling accuracy and durability of the twist drill and overcome the defects of low efficiency of semifinishing and irrational cutting load distribution along the cutting edge of the four-fluted drill, the authors have devised a theoretical cutting edge curve and cycloidal grinding method(CGM) for the first time, by means of which much better results have been achieved.
在分析目前八种钻尖基本形式的基础上,针对普通麻花钻加工精度低耐用度低和原锥面四刃钻头半精加工效率低,主刃负荷分布不合理等缺点,首次提出理论刃形曲线和摆线刃刃磨法,将之用于四刃钻头设计取得了良好的效果。
5.Rough and fine cutting, drilling and boring can be conducted for petroleum drill devices such as drill collar, integral heavy wall drill pipe, centralizer as well as other large-sized and super long axis parts with diameter less than 1600mm and length less than 18000mm.
在此可以对钻铤、加重钻杆、扶正器等石油钻具和其他直径小于1600毫米、长度小于18000毫米的大型、超长轴类零件进行粗、精车削和钻、镗加工。
6.The major factors affecting gas burning in drill hole such as working skills for drill hole, reasonable air, flux coal bed gas content and so on are determined as dominating one from the model, which can provide coal miner or technician with correct suggestion to prevent and control gas burning during drilling in coal mine.
计算结果表明：钻孔施工工艺、合理的配风量、煤层瓦斯含量等是防止钻孔瓦斯燃烧中优先考虑的影响因素，为煤矿防止及治理钻孔瓦斯燃烧提供了科学的理论依据。
7.The dynamic pressure of drill bit,etc. ,has been measured and analysed in test drill rig by using pressure transducer dynamic strain analyzer,charge amplifier and CRAS random signal and vibration analysis system.
本文在试验台架上安装压力传感器、利用动态应变仪、电荷放大器以及 CRAS随机信号和振动分析系统进行了钻头动态压力测试和分析。
8.AN APPROACH TO PREDICTION AND POST DRILL ANALYSIS OF DRILL BIT FOOTAGE
钻头进尺的预测与事后分析方法
9.Ancient tidal sand ridges during the early stage of transgressions in deglaciation are known from bed form data got from the east side of the South Yellow Sea,shallow stratigraphic profile and drill YSDP 102.The upper part of drill QC2 in the sea also reveals buried tidal sand ridges in the middle time of Holocene.
南黄海东侧底形资料、浅地层剖面和 YSDP- 10 2钻孔揭示了冰消期海侵初期的古潮流沙脊群 ; 南黄海QC2孔上部岩心又揭示了全新世中期的埋藏古潮流沙脊群 ;
10.So, this project is to study a kind of new drill, the grinding technology and device of new drill, for which the motion of grinding machine is simple, the grinding parameters can be exactly control.
为此，本课题就是要研究一种新型的钻头、新型钻头的刃磨技术及其刃磨装置，这种钻头刃磨时的运动关系简单、既能够精确地控制刃磨参数，又能够克服平面钻尖的一系列缺陷；
