1) drilling cycle
钻井循环
2) circular drilling
循环钻井
1.
The study of wellbore gas volume control may be helpful to enhance the efficiency of circular drilling, reduce the difficulty in controlling the pressure of equipment, provide a reasonable plan to add or discharge gas for circular drilling, and guide the control of node pressure.
通过对井筒气量控制的研究,可以提高循环钻进效率,并能有效降低设备压力控制的难度,为循环钻井施工提供合理的气量补充和排放方案,并为节点压力控制提供指导。
3) drilling fluid circulatation
钻井液循环
4) counterflush drilling
反循环钻井
5) air circulating drilling
空气循环钻井
1.
In view of the working conditions of under- balance- air circulating drilling, failure mechanism of the routine while- drilling jar to the air- circulating drilling is analyzed on the basis of the reliability theory.
针对欠平衡空气循环钻井的工况特点,利用可靠性理论分析了常规随钻震击器用于空气循环钻井的失效机理,研发了适用于空气循环钻井的空气随钻震击器。
6) reverse circulation air drilling
反循环空气钻井
1.
This article introduced the superiority of double-wall drill pipe reverse circulation air drilling.
介绍了双壁钻杆反循环空气钻井的优越性,根据双壁钻杆的内管直径,从理论上分析了反循环钻井满足携带岩屑需要的最低注气量,又根据双壁钻杆的结构和空气介质反循环钻井的流程分析计算了一定注气量与注气压力之间的关系,从而能根据注气设备的额定工作压力确定反循环钻井能钻达的井深。
补充资料：循环系统的进化环节动物的封闭式循环系统
李瑞端绘
[图]
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条