Underbalanced well drilling and production

Details for Australian Patent Application No. 2008201481 (hide)

Owner Stena Drilling Ltd.

Inventors Humphreys, Gavin

Agent Davies Collison Cave

Pub. Number AU-B-2008201481

Parent 2004286103

Filing date 1 April 2008

Wipo publication date 24 April 2008

Acceptance publication date 23 April 2009

International Classifications

E21B 21/00 (2006.01) Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

E21B 19/00 (2006.01) Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick

E21B 21/08 (2006.01) Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

E21B 33/038 (2006.01) Sealing or packing boreholes or wells

E21B 33/08 (2006.01) Sealing or packing boreholes or wells

Event Publications

24 April 2008 Application Open to Public Inspection

  Published as AU-B-2008201481

24 April 2008 Complete Application Filed

23 April 2009 Application Accepted

  Published as AU-B-2008201481

20 August 2009 Standard Patent Sealed

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