Multiple dart drop circulating tool

Details for Australian Patent Application No. 2008206316 (hide)

Owner BJ Services Company

Inventors Robinson, David; Krieg, George; Mondelli, Maximiliano; Herbert, David

Agent Shelston IP

Pub. Number AU-B-2008206316

PCT Pub. Number WO2008/089200

Priority 11/654,350 16.01.07 US

Filing date 15 January 2008

Wipo publication date 24 July 2008

Acceptance publication date 16 February 2012

International Classifications

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

E21B 23/00 (2006.01) Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells

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

Event Publications

6 August 2009 PCT application entered the National Phase

  PCT publication WO2008/089200 Priority application(s): WO2008/089200

16 February 2012 Application Accepted

  Published as AU-B-2008206316

14 June 2012 Standard Patent Sealed

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