A novel fluid system having controllable reversible viscosity

Details for Australian Patent Application No. 2002364282 (hide)

Owner Sofitech N.V.

Inventors Chang, Frank F; Fu, Diankui

Agent Griffith Hack

Pub. Number AU-B-2002364282

PCT Number PCT/EP02/13848

PCT Pub. Number WO2003/054352

Priority 10/065,144 20.09.02 US; 60/343,145 21.12.01 US

Filing date 6 December 2002

Wipo publication date 9 July 2003

Acceptance publication date 8 November 2007

International Classifications

C09K 8/62 (2006.01) Compositions for drilling of boreholes or wells

C09K 8/74 (2006.01) Compositions for drilling of boreholes or wells

C09K 8/86 (2006.01) Compositions for drilling of boreholes or wells

Event Publications

17 July 2003 Complete Application Filed

  Priority application(s): 10/065,144 20.09.02 US; 60/343,145 21.12.01 US

2 October 2003 Application Open to Public Inspection

  Published as AU-B-2002364282

8 November 2007 Application Accepted

  Published as AU-B-2002364282

6 March 2008 Standard Patent Sealed

17 April 2008 Assignment Registered

  Sofitech N.V. The patent has been assigned to Schlumberger Technology B.V.

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