这颗圆角长方形阶梯型粉钻重达24.78克拉。
A pink round-cornered rectangular step-cut diamond weighing 24.78 carats.
枕形鲜彩蓝钻石，重达6.01克拉，左右两侧各有一颗椭圆形粉钻镶嵌在铂金之上，重量分别为0.46和0.44克拉。
A cushion-shaped fancy vivid blue diamond weighing 6.01 carats, flanked on each side by an oval pink diamond weighing 0.46 and 0.44 carat respectively, mounted in platinum.
佩特拉钻石公司发言人詹姆斯·邓肯31日表示：“这些钻石是在南非开普省一处矿井内发现的，最大的一颗重达136克拉，是洁白的八面体钻，犹如一颗橙子一样大。
These gemstones were found in a mine in Cape Town, South Africa. The largest stone is a 136-carat clean white octahedral one which is as large as an orange.
利用气体型流体进行欠平衡钻井，或钻易漏地层时，流体密度及井下液柱压力的确定十分重要。
When underbalanced drilling or drilling easy leaky zone by using aeration fluid, the determination of fluid density and downhole fluid column pressure is very important.
司钻要确保所有的仪表和传感器，如指重仪、扭距表，要经过检查和校验。
The Driller shall ensure that all gauges and sensors, such as the weight indicator, torque gauge, are inspected and calibrated.
钻井过程中，近钻头处钻压、扭矩等钻井工程参数的随钻准确测量对安全、高效钻井是十分重要的。
The measurement of engineering parameters near the bit while drilling is of significant importance for the safety and efficiency in a drilling process.
预测下部钻具组合(BHA)的造斜能力对准确控制井眼轨迹十分重要。
Accurate prediction of BHA deflecting capacity is very important for precise well trajectory control.
针对以上难题，利用有限元法研究了钻柱在井底的二重非线性(几何非线性和接触非线性)问题。
Thus the finite element method is used to study the duplex nonlinearity (geometric nonlinearity and contact nonlinearity) of the drill string at the well bottom.
正确认识压差卡钻，对于减少井下复杂事故，提高钻井速度，降低钻井成本具有十分重要的意义。
Correctly recognizing the differential pressure sticking is of great significance to reduce complex accidents of borehole, increase drilling speed and reduce the drilling cost.
这把天地锁面板长64厘米，重17公斤，全由手工雕刻、纯铜锻造而成，并镶嵌着1500颗碎钻，璀璨夺目。
This grows face plate of lock of heaven and earth 64 centimeters, weigh 17 kilograms, forging by manual sculpture, pure copper completely and become, enchasing 1500 to break auger, bright is dazzling.
一颗重达75.36克拉的巨钻找到了新主人，并得到了新名字。据佳士得拍卖行所称，这颗钻石是有史以来上拍的最大、最完美的水滴形钻石。
The new owner of what Christie's auction house called the largest and most perfect briolette diamond ever sold at auction has identified herself and picked a name for the 75.36-carat gem.
综合考虑钻柱惯性离心力和自重的影响，我们发现，在工作状态下，钻柱的临界压力会明显地小于静态时的临界力，这对实际的钻探工程来说具有十分重要的指导意义。
Considering the inertial eccentric force and the weight of the drill string, we find that the axis critical force will be obviously less than that under the static state, which wil...
小井眼扩孔钻头是老井重钻的关键设备。
The reaming drill bit in slim hole is a key tools of re-drilling in existing well.
瑞钻牌旋挖齿，可与宝俄、卡特、三一、宇通、福田雷沃、中联重科等各种旋挖钻机配套。
Our "Ruizuan"brand rotary bits can be suitable for Bauer, Cat, Sany, Yutong, Foton Lovol and Zoomlion machines.
瑞钻牌旋挖齿，可与宝俄、卡特、三一、宇通、福田雷沃、中联重科等各种旋挖钻机配套。
Our "Ruizuan"brand rotary bits can be suitable for Bauer, Cat, Sany, Yutong, Foton Lovol and Zoomlion machines.
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