CLOSED LOOP MULTIPHASE UNDERBALANCED DRILLING PROCESS

Details for Australian Patent Application No. 2003251822 (hide)

Owner WEATHERFORD/LAMB, INC.

Inventors CHITTY, Gregory, H.; SAPONJA, Jeffrey, Charles; HOSIE, David, Graham

Pub. Number AU-A-2003251822

PCT Number PCT/US03/21487

PCT Pub. Number WO2004/005670

Priority 10/192,784 10.07.02 US

Filing date 9 July 2003

Wipo publication date 23 January 2004

International Classifications

E21B 043/12 Obtaining fluids from wells - Methods or apparatus for controlling the flow of the obtained fluid to or in wells

E21B 043/34 Obtaining fluids from wells - Arrangements for separating materials produced by the well

E21B 043/40 Obtaining fluids from wells

Event Publications

16 October 2003 Complete Application Filed

  Priority application(s): 10/192,784 10.07.02 US

11 March 2004 Application Open to Public Inspection

  Published as AU-A-2003251822

21 April 2005 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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