METHOD FOR FORMATION PRESSURE CONTROL WHILE DRILLING

Details for Australian Patent Application No. 2002353012 (hide)

Owner SHELL OIL COMPANY

Inventors VON EBERSTEIN, William, Henry, Jr.; MAYO, George, Herbert; WEAVER, Mark, Allen; VAN OORT, Eric; KOTARA, Ernest, Benedict

Pub. Number AU-A-2002353012

PCT Number PCT/US02/38509

PCT Pub. Number WO2003/048525

Priority 60/337,009 03.12.01 US

Filing date 3 December 2002

Wipo publication date 17 June 2003

International Classifications

E21B 049/00 Testing the nature of borehole walls

E21B 043/26 Obtaining fluids from wells

E21B 021/08 Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

Event Publications

20 March 2003 Complete Application Filed

  Priority application(s): 60/337,009 03.12.01 US

21 August 2003 Application Open to Public Inspection

  Published as AU-A-2002353012

19 August 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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