Downhole Surge Pressure Reduction and Filtering Apparatus

Details for Australian Patent Application No. 2005225147 (hide)

Owner Weatherford/Lamb, Inc.

Inventors Pedersen, Gerald Dean; Scott, Thad Joseph; Giroux, Richard Lee; Haugen, David Michael; Pluchek, Clayton Stanley

Agent Fraser Old & Sohn

Pub. Number AU-B-2005225147

Parent 2001237639

Filing date 25 October 2005

Wipo publication date 1 December 2005

Acceptance publication date 29 March 2007

International Classifications

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

E21B 27/00 (2006.01) Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sand

E21B 33/14 (2006.01) Sealing or packing boreholes or wells

E21B 33/16 (2006.01) Sealing or packing boreholes or wells

E21B 37/00 (2006.01) Methods or apparatus for cleaning boreholes or wells

E21B 37/10 (2006.01) Methods or apparatus for cleaning boreholes or wells

E21B 43/10 (2006.01) Obtaining fluids from wells

E21B 34/00 (2006.01) Valve arrangements for boreholes or wells

Event Publications

10 November 2005 Complete Application Filed

1 December 2005 Application Open to Public Inspection

  Published as AU-B-2005225147

29 March 2007 Application Accepted

  Published as AU-B-2005225147

2 August 2007 Standard Patent Sealed

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