查询词典 drilling bit

A bit used in drilling for oil.

油田钻井使用的钻头。

Based on the mechanical model of single bit, drilling loads on the cutting head of tunneling machine are simulated by means of computer in this paper.

基于单个截齿的受力模型，对掘进机截割头钻进工况载荷进行了计算机模拟，为截割头的结构设计和参数优化提供了理论依据。

Setting up the simulation models of monocone bit drilling.

编制了三牙轮钻头轮体速比的仿真软件。

This paper applies the non-linear finite element method to the prediction of the torque of the drill string and the drilling direction of the bit.

在钻探水平井尤其是大位移水平井中，事先较准确地预测出钻柱的钻进扭矩及钻头前进的方向，是取得水平井成功的关键条件之一。

It is a good fundament for the computer simulation on working action of rock bit drilling.

从仿真结果可以看出，钻头在钻井过程中由于牙齿在井底的交替吃入以及井底本身的凹凸不平造成钻头在井底的纵向振动，其钻压的振幅一般为平均钻压的30%左右；同时，由于钻头在井底的刮切作用造成了钻头转速以及扭矩的变化，转速的变化相对来说较为平缓。

All these will save tripping time, decrease working intensity, reduce drilling cost and increase bit's working life.

大大节约起下钻时间，降低工作强度，减少钻井成本，提高钻头使用寿命。

The drill pipe transmits rotation, vertical movement and drilling fluid to the bit.

钻杆将旋转运动、垂直运动和钻井流体传递到钻头。

E. downing the hole hammer with ream drilling and casing synchronously and clan ing the slant borehole with reverible air to blow connector as withdrawing bit.

介绍用空气潜孔锤与同步跟下套管相结合的潜孔锤跟管钻进方法，以及在有残积岩屑的斜孔中应用提钻反吹接头清孔的方法。

Boart Longyear Drilling Products Co., Ltd, invested and set up by Boart Longyear Group, is a US wholly-owned enterprise specialized in producing and selling bit tools, and develops on the basis of Wuxi Boart Longyear Hard metals Co., Ltd.

宝长年钻探装备有限公司，由宝长年集团投资设立，是一家专业生产和销售钎具产品的美国独资企业，是在无锡宝长年硬质合金有限公司的基础上发展而来。

Through comprehensive applications of many key projects,such as well location optimization technology,mixed oil drilling technology combined with using popularized PDC bit s of high efficiency and high torque and low-velocity hobs of great power, deep well bore contro.

通过井位优选技术、推广高效 PDC 钻头和大功率高扭矩低速螺杆的复合钻井技术、深井井身控制技术、以防漏堵漏为主的调整井钻井技术等各项攻关课题的综合应用，形成了一系列的深井优快钻井综合技术，大打钻井科技攻坚战，取得了钻井速度的新突破。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。