Title:
DOWNHOLE TOOL WITH ROTATIONAL DRIVE COUPLING AND ASSOCIATED METHODS
Document Type and Number:
WIPO Patent Application WO/2014/033462
Kind Code:
A3
Abstract:
A downhole tool (10) comprising rotatable inner and outer sleeves (62, 63). The sleeves (62, 63) comprise coupling portions for transmitting a torque between the sleeves (62, 63). The tool is reconfigurable between a first configuration whereby the coupling portions are axially misaligned to prevent transmission of torque between the inner and outer sleeves (62, 63), and a second configuration whereby the coupling portions are axially aligned to permit a transmission of torque between the sleeves (62, 63). At least one of the coupling portions is configured to prevent the transmission of torque above a predetermined torque threshold.
Inventors:
EDDISON ALAN MARTYN (GB)
TULLOCH RORY MCCRAE (GB)
TULLOCH RORY MCCRAE (GB)
Application Number:
PCT/GB2013/052275
Publication Date:
October 16, 2014
Filing Date:
August 29, 2013
Export Citation:
Assignee:
NOV DOWNHOLE EURASIA LTD (GB)
International Classes:
E21B7/06
Foreign References:
| US7287607B1 | 2007-10-30 |
Attorney, Agent or Firm:
SHANKS, Andrew (Aurora120 Bothwell Street, Glasgow G2 7JS, GB)
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