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- Air driven hollow DTH hammer is applied,along with a set of dual wall drilling pipe and a specially designed reverse circulation bit,to conduct continuous coring reverse circulation drilling. 气动贯通式潜孔锤与双壁钻杆及专门研制的反循环钻头 (获国家发明专利 )配套使用 ,可实现反循环连续取心 (样 )钻进新工艺 ,连续获取的岩样采取率高 ,品质好 ,代表性强。
- pump reverse circulation drilling technique 泵吸反循环钻进工艺
- air-lift reverse circulation drilling 气举反循环钻进
- normal & reverse circulation drilling 正反循环钻进
- directional circulation drilling technology 正循环钻进
- reverse - circulation drilling bit 反循环钻头
- percussion reverse circulation drill 冲击反循环钻机
- Study of Formation Protection Lost Circulation Drilling Fluid 保护油层堵漏钻井液的研究
- Research on Bottom Hole Flushing in Reverse Circulation Drilling 反循环钻进井底净化的研究
- gas upgrading of reverse circulation drilling technology 气举反循环
- The drilling troops mustered on the hill. 演习部队在小山上集合起来了。
- Pound notes have been withdrawn from circulation. 一英镑面值的钞票已停止流通。
- The workman is drilling in the wall. 工人正在墙上打孔。
- Drilling is cutting a hole with a drill. 钻削就是用钻头钻一个孔。
- Harvey discovered the circulation of the blood. 哈唯发现了血液循环。
- We observed the circulation of blood in frogs. 我们观察了青蛙的血液循环。
- At six we were fallen in for drill. 六点钟我们站好队准备操练。
- The old coins have been withdrawn from circulation. 旧硬币已经收回不再流通了。
- Many forged notes are in circulation. 许多假钞在流通。
- The noise of the drilling is intolerable. 钻孔的噪音让人受不了。
