Method and apparatus to reduce downhole surge pressure using hydrostatic valve

Details for Australian Patent Application No. 2003234673 (hide)

Owner Weatherford/Lamb, Inc.

Inventors Giroux, Richard; Haugen, David, M.; Hosie, David

Agent Pizzeys

Pub. Number AU-B-2003234673

PCT Number PCT/US03/16800

PCT Pub. Number WO2003/102367

Priority 10/157,743 29.05.02 US

Filing date 29 May 2003

Wipo publication date 19 December 2003

Acceptance publication date 24 May 2007

International Classifications

E21B 43/10 (2006.01) Obtaining fluids from wells

E21B 21/10 (2006.01) Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

E21B 34/06 (2006.01) Valve arrangements for boreholes or wells

E21B 34/10 (2006.01) Valve arrangements for boreholes or wells

E21B 34/14 (2006.01) Valve arrangements for boreholes or wells

Event Publications

28 August 2003 Complete Application Filed

  Priority application(s): 10/157,743 29.05.02 US

12 February 2004 Application Open to Public Inspection

  Published as AU-B-2003234673

24 May 2007 Application Accepted

  Published as AU-B-2003234673

20 September 2007 Standard Patent Sealed

Legal

The information provided by the Site not in the nature of legal or other professional advice. The information provided by the Site is derived from third parties and may contain errors. You must make your own enquiries and seek independent advice from the relevant industry professionals before acting or relying on any information contained herein. Check the above data against the Australian Patent Office AUSPAT database.

Next and Previous Patents/Applications

2003234674-A MOVABLE MICROELECTROMECHANICAL DEVICE

2003234672-LOW ACCELERATION SENSITIVITY MOUNTING STRUCTURES FOR CRYSTAL RESONATORS