Design of electrical equipment on drilling rig at low temperature;
低温环境下钻修机的电气设计
Based on an analysis of the electrical condition for the drilling rig working at low temperature, electrical equipment for operating at low temperature is desig ned.
通过对低温环境下服役钻修机的电气状况的分析,设计出适合低温环境的钻修机电气设备,确保钻修机及其它钻采设备在低温环境能够安全高效工作;改变电气设备壳体材质,运用自动送钻、盘式刹车、电磁涡流刹车、电子天车防碰及井架自动穿销等一些成熟的技术,提高整套钻修机的自动化水平,增加空间加热器、电伴热、电加热器及自动升温控制手段,提高在-20~-45℃(极地寒冷)恶劣气候条件下服役钻修机的可靠性;改变钢材化学成分、低倍组织、铸造特殊工艺等手段,研制一批满足或接近API标准冲击要求的特制钢,确保出口到极寒冷地区的钻修机运行稳定、可靠。
Application of China offshore workover rig;
我国海洋钻修井机的应用
Study on the Solid Controlling System of Light Modular Ocean Drilling Machine
轻型可搬迁式海洋模块钻修机固控系统研究
To bore(a shaft) with a trepan.
钻用钻井机钻（矿井）
ZZM-A drill grinder simple structure, easy operation. One setup to complete grindings on drill web and chisel edge.
a型钻头磨刀机结构简单，使用方便，一次装夹就可以完成钻头的钻尖和横刃的修磨。
high-thrust drill
强力钻机，高推力钻机
Difficulties of comprehensive geological logging and measures to cope with them during drilling adjustment wells using service rigs
利用修井机钻调整井地质综合录井难点及应对措施
kelly for well-drilling machiens
旋转钻孔,钻井机用
churn-type percussion drill
无游梁绳式顿钻钻机
mixed oil drilling rig
复合式石油钻井钻机
The sorker was drilling.
此工人在用钻孔机钻孔。
This drill can bore through rock.
这台钻机能钻透岩石.
Raise-boring machines
GB/T12761-1991天井钻机
spider bow [for well drilling machines]
星形斗[钻井机用]
drilling machine, mining or quarrying, not self-propelled
开矿或采石用钻机,非自动钻机
The woman was no longer filing her nails but was busily working the Chinese typewriter, the finger with the diamond ring curling upward as before.
那女人不修指甲了，忙着运用中文打字机呢，依然翘着带钻戒的无名指。
Study on Dynamic Characteristics and Failure Mechanism of Drill String in Air Drilling
气体钻井钻柱动力学特性及钻柱失效机理研究
SHALLOW HORIZONTAL DRILLING TECHNOLOGY BY USING VERTICAL-WELL RIG IN HENAN OILFIELD
河南油田直井钻机钻浅层水平井钻井技术
diesel electric driving rig
柴油机发电驱动钻机
gas electric rig
天然气发电机 钻机