Title:
Drilling hole exploration method, drilling equipment and borehole exploration assembly
Document Type and Number:
Japanese Patent JP6326565
Kind Code:
B2
Abstract:
A method is disclosed for surveying drill holes with a drilling arrangement and borehole survey assembly. The method can include providing a drill tool having at least one drill rod and a drill bit assembly, and providing a borehole survey tool having a sensor) for measuring a borehole. In the method a drill tool having a central flushing channel for conducting flushing fluid to the drill bit assembly is used, and the borehole survey tool is arranged in the central flushing channel so that flushing fluid can flow in the central flushing channel past the borehole survey tool.
Inventors:
Haynonen, Mikko
Sjoholm, Harri
Lautieinen, Yussi
Mattilla, Mikko
Sjoholm, Harri
Lautieinen, Yussi
Mattilla, Mikko
Application Number:
JP2015530467A
Publication Date:
May 23, 2018
Filing Date:
September 05, 2013
Export Citation:
Assignee:
ROBIT OYJ
International Classes:
E21B47/01
Domestic Patent References:
| JP2002047885A | ||||
| JP2002536576A | ||||
| JP5118186A | ||||
| JP2000160975A | ||||
| JP2007063782A |
Foreign References:
| US8011447 | ||||
| US20050006143 | ||||
| WO2012039666A1 | ||||
| US5680906 | ||||
| US5931000 |
Attorney, Agent or Firm:
Takao Katori
Hirotaka Kitajima
Koichi Kikuchi
Hirotaka Kitajima
Koichi Kikuchi
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