Title:
掘削システム
Document Type and Number:
Japanese Patent JP5329561
Kind Code:
B2
Abstract:
A drilling system comprising a rotatable drill pipe 12 connected to a tractor unit 10, and a steerable drilling system 18, 20, 22, connected to and movable by the tractor unit 10.
Inventors:
Joffrey, C. Downton
Sammy, Iskander
Robert, Atter
Sammy, Iskander
Robert, Atter
Application Number:
JP2010536968A
Publication Date:
October 30, 2013
Filing Date:
November 19, 2008
Export Citation:
Assignee:
SCHLUMBERGER HOLDINGS LIMITED
International Classes:
E21B4/02; E21B3/02; E21B4/04
Domestic Patent References:
| JP49007101A | ||||
| JP2003518214A |
Foreign References:
| WO2001009478A1 | ||||
| US6863137 | ||||
| WO2004083595A2 | ||||
| US20030075361 |
Attorney, Agent or Firm:
Hirohito Katsunuma
Hiroyuki Nagai
Katsuomi Isogai
Satoshi Nazuka
Junpei Okada
Hideyuki Mori
Yukihiro Hotta
Hiroyuki Nagai
Katsuomi Isogai
Satoshi Nazuka
Junpei Okada
Hideyuki Mori
Yukihiro Hotta