A surface motor direct-drive sucker-rod screw pump device

Details for Australian Patent Application No. 2006347192 (hide)

Owner Liu, J. Gou, S. Tang, Y. Cong, H.

Inventors Liu, Jun; Cong, Hengli; Gou, Songbo; Tang, Yongjian

Agent Spruson & Ferguson

Pub. Number AU-A-2006347192

PCT Pub. Number WO2008/017211

Filing date 4 August 2006

Wipo publication date 14 February 2008

International Classifications

F04B 47/02 (2006.01) Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps

E21B 43/00 (2006.01) Obtaining fluids from wells

H02P 29/00 (2006.01) Arrangements for regulating or controlling electric motors, appropriate for both ac- and dc-motors

Event Publications

2 April 2009 PCT application entered the National Phase

  PCT publication WO2008/017211 Priority application(s): WO2008/017211

18 June 2009 Assignment before Grant

  Liu, Jun; Tang, Yongjian; Cong, Hengli; Gou, Songbo The application has been assigned to Liu, Jun; Gou, Songbo; Tang, Yongjian; Cong, Hengli; Direct Drive PCP Inc.

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