Precipitated weighting agents for use in wellbore fluids

Details for Australian Patent Application No. 2007296539 (hide)

Owner M-I LLC

Inventors Massam, Jarrod; Ballard, David Antony

Agent Pizzeys

Pub. Number AU-B-2007296539

PCT Pub. Number WO2008/033838

Priority 60/825,156 11.09.06 US

Filing date 11 September 2007

Wipo publication date 20 March 2008

Acceptance publication date 9 June 2011

International Classifications

C09K 8/03 (2006.01) Compositions for drilling of boreholes or wells

C09K 8/16 (2006.01) Compositions for drilling of boreholes or wells

C09K 8/32 (2006.01) Compositions for drilling of boreholes or wells

Event Publications

9 April 2009 PCT application entered the National Phase

  PCT publication WO2008/033838 Priority application(s): WO2008/033838

9 June 2011 Application Accepted

  Published as AU-B-2007296539

6 October 2011 Standard Patent Sealed

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