E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/27
E21B 43/00 (2006.01) E21B 33/04 (2006.01) E21B 43/12 (2006.01)
Patent
CA 1279256
ABSTRACT OF THE DISCLOSURE A rotary drive apparatus is provided for connection to a rotary drive string extending downwardly in a well to a rotary downhole pump. Separate axial load bearing and rotary drive spindles are provided and are separately connected to the rotary drive string by readily releasable connectors so as to permit axial adjustment of the rotary drive string while preventing loss of the string into the well in the event of release or slippage of one of the connectors. The design also permits repair or adjustment of the drive apparatus without removal of the rotary drive string from the well.
553598
Makins James E.
Thompson James E.
Borden Ladner Gervais Llp
Makins James E.
National-Oilwell A. Partnership
Thompson James E.
Usx Engineers And Consultants Inc.
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