Additive for increasing the density of a fluid for casing annulus pressure control

Details for Australian Patent Application No. 2003279939 (hide)

Owner M-I L.L.C.

Inventors Sawdon, Christopher A.; Reid, William M.; Bradbury, Andrew J.; Clary, Sonny; Heinz, Tom

Agent Pizzeys

Pub. Number AU-B-2003279939

PCT Number PCT/US03/32246

PCT Pub. Number WO2004/037947

Priority 10/274,528 18.10.02 US

Filing date 14 October 2003

Wipo publication date 13 May 2004

Acceptance publication date 11 February 2010

International Classifications

C09K 8/04 (2006.01) Compositions for drilling of boreholes or wells

B02C 23/06 (2006.01) Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in groups or not specially adapted to apparatus covered by one only of groups

C04B 20/10 (2006.01) Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups and characterised by shape or grain distribution

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

C09K 8/22 (2006.01) Compositions for drilling of boreholes or wells

C09K 8/34 (2006.01) Compositions for drilling of boreholes or wells

C09K 8/40 (2006.01) Compositions for drilling of boreholes or wells - Spacer compositions, e.g. compositions used to separate well-drilling from cementing masses

C09K 8/48 (2006.01) Compositions for drilling of boreholes or wells

C09K 8/82 (2006.01) Compositions for drilling of boreholes or wells

C09K 8/84 (2006.01) Compositions for drilling of boreholes or wells

C09K 8/92 (2006.01) Compositions for drilling of boreholes or wells

Event Publications

26 February 2004 Complete Application Filed

  Priority application(s): 10/274,528 18.10.02 US

17 June 2004 Application Open to Public Inspection

  Published as AU-B-2003279939

11 February 2010 Application Accepted

  Published as AU-B-2003279939

10 June 2010 Standard Patent Sealed

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