DRILLING SYSTEM AND METHOD FOR CONTROLLING EQUIVALENT CIRCULATING DENSITY DURING DRILLING OF WELLBORES

Details for Australian Patent Application No. 2002320329 (hide)

Event Publications

16 January 2003 Complete Application Filed

Priority application(s): 60/323,797 20.09.01 US; 60/303,959 09.07.01 US; 60/304,160 10.07.01 US

22 May 2003 Application Open to Public Inspection

Published as AU-A-2002320329

8 April 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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