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https://drivepatents.com/patents/997630 · 3 Oct 2012
The present invention relates to a downhole driving unit (11) for insertion into a well, comprising a driving unit housing (51), a hydraulic motor (23) comprising a hydraulic motor housing (93), the hydraulic motor comprising a cam ring (24), a wheel assem...
https://drivepatents.com/patents/997567 · 3 Oct 2012
The present invention relates to a downhole driving unit (11) for insertion into a well, comprising a driving unit housing (51), an arm assembly (60) movable between a retracted position and a projecting position in relation to the driving unit housing, an...
https://drivepatents.com/patents/997544 · 3 Oct 2012
The present invention relates to a downhole driving unit (11) for insertion into a well, comprising a driving unit housing (51), a hydraulic motor (23) comprising a hydraulic motor housing (93), a wheel assembly (90) comprising a stationary part (91) and a...
https://drivepatents.com/patents/997542 · 3 Oct 2012
The present invention relates to a downhole driving unit (11) for insertion into a well, comprising a driving unit housing, a hydraulic motor (23) comprising a hydraulic motor housing (93), a wheel assembly (90) comprising a stationary part (91) and a rota...
https://drivepatents.com/patents/1006475 · 4 Jan 2012
The present invention relates to a safety device (1) for a downhole tool (2) for controlling a delivery of electricity to an electrical component in the tool, comprising a first member (6) comprising a plurality of conductors (7,8,9), and a second member (...