| 发明名称 |
TURBOFOREUSE MUNIE D'UN DISPOSITIF DE MESURE DE DEVIATION ASSURANT UNE PROGRESSION SPATIALE FIABLE DE L'OUTIL ATTAQUANT LA ROCHE |
| 摘要 |
A turbodrill comprising turbine sections, a spindle and a pipe assembly. According to the invention, the pipe assembly is formed by two coaxially arranged pipes provided between the spindle and the adjacent turbine section and coupled to components of the turbodrill. |
| 申请公布号 |
FR2512487(B1) |
申请公布日期 |
1987.02.20 |
| 申请号 |
FR19810017176 |
申请日期 |
1981.09.10 |
| 申请人 |
INSTITUT BUROVOI TEKHNIKI |
发明人 |
JURY ROLENOVICH IOANESIAN ET VALERY VIKTOROVICH POPKO |
| 分类号 |
E21B4/02;E21B7/04;E21B47/022;F03B13/02;(IPC1-7):E21B4/02 |
主分类号 |
E21B4/02 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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