PRESSURE PULSING APPARATUS AT SURFACE AND METHOD FOR DRILLING

Details for Australian Patent Application No. 2002224703 (hide)

Owner WALTER, Bruno

Inventors WALTER, Bruno; Walter, Bruno; Walter, Bruno; Walter, Bruno

Pub. Number AU-A-2002224703

PCT Pub. Number WO2002/055837

Priority 2,331,021 09.01.01 CA; 2,354,994 13.08.01 CA

Filing date 9 January 2002

Wipo publication date 24 July 2002

International Classifications

E21B 007/24 Special methods or apparatus for drilling

E21B 004/20 Drives for drilling, used in the borehole

E21B 021/10 Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

Event Publications

6 February 2003 Application Open to Public Inspection

  Published as AU-A-2002224703

5 February 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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