Apparatus and method for controlling the viscosity or the density of a drilling fluid

Details for Australian Patent Application No. 2006305652 (hide)

Owner National Oilwell Varco, L.P

Inventors Scott, Eric; Stone, Lyndon Ray; Koch, Richard James

Agent Pizzeys

Pub. Number AU-B-2006305652

PCT Pub. Number WO2007/045925

Priority 11/253,062 18.10.05 US; 11/338,433 24.01.06 US

Filing date 17 October 2006

Wipo publication date 26 April 2007

Acceptance publication date 21 July 2011

International Classifications

E21B 21/06 (2006.01) Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

Event Publications

3 April 2008 PCT application entered the National Phase

  PCT publication WO2007/045925 Priority application(s): WO2007/045925

21 July 2011 Application Accepted

  Published as AU-B-2006305652

17 November 2011 Standard Patent Sealed

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