A double-wall drill tool has been developed to solve problems arising in the process of controlling the wellbore trajectory using conventional downhole mud motor and MWD in under-balanced drilling with aerated drilling fluid.
为解决在充气钻井液欠平衡压力钻井时,使用常规井下动力钻具和随钻测量仪器进行井眼轨迹控制中遇到的技术难题,研制了双壁钻具。
A kind of new turblent flow in annular square channel with two cooled wall was designed on basic thermophoresis principle.
依据热泳基本原理,设计了一种新型湍流方环形双壁冷却式通道。
The safety problems for twin slope-cut blasting in Shenjiahu Expressway construction are presented.
阐述申嘉湖高速公路双壁路堑开挖爆破的安全问题,以及如何加强和细化人员、爆破器材及施工过程中的安全管理工作,以确保在工程爆破中取得良好的爆破效果,保证爆破工程的安全。
Engineers adopted proper technical measures to install base board reinforcement and to set up formwork of double wall boards and achieved good effects.
介绍了大型曝气沉淀池底板、壁板分块施工的方法和措施 ,对底板钢筋的安装和双壁板的支模采取了切实可行的技术措施 ,从而取得了较好的效果。
