METHOD OF REDUCING THE DENSITY OF DRILLING MUD

Details for Australian Patent Application No. 2002326223 (hide)

Owner NATIONAL OILWELL NORWAY AS

Inventors GJEDEBO, Jon, Grude

Pub. Number AU-A-2002326223

PCT Number PCT/NO02/00331

PCT Pub. Number WO2003/025335

Priority 60/323,958 21.09.01 US; 10/247,149 19.09.02 US

Filing date 20 September 2002

Wipo publication date 1 April 2003

International Classifications

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

Event Publications

23 January 2003 Complete Application Filed

  Priority application(s): 60/323,958 21.09.01 US; 10/247,149 19.09.02 US

5 June 2003 Application Open to Public Inspection

  Published as AU-A-2002326223

10 June 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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.

Legal

The information provided by the Site not in the nature of legal or other professional advice. The information provided by the Site is derived from third parties and may contain errors. You must make your own enquiries and seek independent advice from the relevant industry professionals before acting or relying on any information contained herein. Check the above data against the Australian Patent Office AUSPAT database.

Next and Previous Patents/Applications

2002326224-SYSTEM FOR UTILIZATION OF SINUS-SHAPED MOTION PATTERN

2002326222-COLLAPSIBLE CHAIR