Methods and systems for drilling

Details for Australian Patent Application No. 2011240821 (hide)

Owner Shell Internationale Research Maatschappij B.V.

Inventors Edbury, David Alston; Guerrero, Jose Victor; Macdonald, Duncan Charles; Norman, Jason B.; Rogers, James Bryon; Sitton, Donald Ray

Agent Spruson & Ferguson

Pub. Number AU-A-2011240821

PCT Pub. Number WO2011/130159

Priority 61/323,251 12.04.10 US

Filing date 11 April 2011

Wipo publication date 20 October 2011

International Classifications

E21B 7/06 Special methods or apparatus for drilling

E21B 47/02 Survey of boreholes or wells - Determining slope or direction

Event Publications

18 October 2012 PCT application entered the National Phase

  PCT publication WO2011/130159 Priority application(s): WO2011/130159

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