Body symmetry, in particular welded body structure, well under the stress from the pipe.
阀体对称，尤其是焊接阀体结构，能很好地承受来自管道的应力。
This paper introduces a new cementing tool named circulating blind pipe, and it's mechanical structure, operation principle and successful applications while cementing a liner in a lost well.
详细介绍了一种新型固井用井下工具——可循环盲板的结构、工作原理及其在漏失井筛管固井中的成功应用。
For the well completion method by slotted liner, well completion parameters, single slotted liner length and pipe string structure in well completion are optimized.
针对割缝衬管完井方法，进行了完井参数、单根割缝衬管长度、完井管柱结构的优化设计。
In the paper, it is introduced briefly the structure and working principle of pipe transportation system as well as some application examples after being adopted the vertical lifting technology.
文中简要介绍了应用垂直提升技术后，管道输送系统的结构和工作原理及应用实例等。
The nozzle and the nozzle body in the invention are simple in structure, can accurately position the recycling bent pipe, and are convenient as well as quick for disassembling and assembling.
本发明中的喷头和喷头体，其结构简单，能使回收弯管的定位准确，且拆装方便快速。
This paper presents the principle, structure and characteristics of Russian MID-K logging tool. And the well logging data show the detection effect in single case-pipe and multilayer case-pipes.
结合俄罗斯最新产的电磁探伤测井仪MID-K，介绍MID-K的原理方法、仪器结构及特点，并用测井资料，展示在单套管和多层管内进行套管检查的应用效果。
This paper presents the principle, structure and characteristics of Russian MID-K logging tool. And the well logging data show the detection effect in single case-pipe and multilayer case-pipes.
结合俄罗斯最新产的电磁探伤测井仪MID-K，介绍MID-K的原理方法、仪器结构及特点，并用测井资料，展示在单套管和多层管内进行套管检查的应用效果。
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