Downhole ball dropping apparatus

Details for Australian Patent Application No. 2003273337 (hide)

Owner Baker Hughes Incorporated

Inventors Lynde, Gerald D.; Davis, John P.

Agent Freehills

Pub. Number AU-B-2003273337

PCT Number PCT/US03/29352

PCT Pub. Number WO2004/031533

Priority 10/254,104 24.09.02 US

Filing date 15 September 2003

Wipo publication date 23 April 2004

Acceptance publication date 30 October 2008

International Classifications

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

E21B 34/08 (2006.01) Valve arrangements for boreholes or wells

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

Event Publications

5 February 2004 Complete Application Filed

  Priority application(s): 10/254,104 24.09.02 US

27 May 2004 Application Open to Public Inspection

  Published as AU-B-2003273337

30 October 2008 Application Accepted

  Published as AU-B-2003273337

26 February 2009 Standard Patent Sealed

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