Viscosity reduction of viscoelastic surfactant based fluids

Details for Australian Patent Application No. 2001260178 (hide)

Owner Sofitech N.V.

Inventors Samuel, Mathew; Hutchins, Richard; Salamat, Golchi; Nelson, Erik B.; Tustin, Gary J.; Lee, Jesse C.; Parris, Michael; Fletcher, Philip; Lungwitz, Bernhard; Hughes, Trevor L.; Fu, Diankui; Dismuke, Keith

Agent Griffith Hack

Pub. Number AU-B-2001260178

PCT Pub. Number WO01/77487

Priority 60211684 15.06.00 US; 60194755 05.04.00 US

Filing date 3 April 2001

Wipo publication date 23 October 2001

Acceptance publication date 15 December 2005

International Classifications

E21B 43/00 (2006.01) Obtaining fluids from wells

Event Publications

6 March 2003 Amendment Made

  The nature of the amendment is as shown in the statement(s) filed 26 Sep 2002

15 December 2005 Application Accepted

  Published as AU-B-2001260178

13 April 2006 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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