Electro-hydraulically pressurized downhole valve actuator

Details for Australian Patent Application No. 2001243412 (hide)

Owner Shell Internationale Research Maatschappij B.V.

Inventors Carl, Frederick Gordon Jr.; Savage, William Mountjoy; Burnett, Robert Rex; Vinegar, Harold J.

Agent Spruson & Ferguson

Pub. Number AU-B-2001243412

PCT Pub. Number WO01/65061

Priority 60/186,531 02.03.00 US

Filing date 2 March 2001

Wipo publication date 12 September 2001

Acceptance publication date 14 October 2004

International Classifications

E21B 034/06 Valve arrangements for boreholes or wells

F16K 031/06 Operating means - using a magnet

E21B 047/12 Survey of boreholes or wells - Means for transmitting measuring-signals from the well to the surface, e.g. for logging while drilling

E21B 017/00 Drilling rods or pipes

Event Publications

14 October 2004 Application Accepted

  Published as AU-B-2001243412

10 February 2005 Standard Patent Sealed

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