Irregularly shaped flapper closure and sealing surfaces

Details for Australian Patent Application No. 2011202433 (hide)

Owner Weatherford/Lamb, Inc.

Inventors Smith, Roddie Robert; Garay, Serge

Agent Fisher Adams Kelly

Pub. Number AU-A-2011202433

Priority 12/836,143 14.07.10 US

Filing date 25 May 2011

Wipo publication date 2 February 2012

International Classifications

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

E21B 34/12 (2006.01) Valve arrangements for boreholes or wells

E21B 34/16 (2006.01) Valve arrangements for boreholes or wells

Event Publications

9 June 2011 Complete Application Filed

  Priority application(s): 12/836,143 14.07.10 US

2 February 2012 Application Open to Public Inspection

  Published as AU-A-2011202433

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