E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 10/02 (2006.01) E21B 10/48 (2006.01) E21B 25/00 (2006.01)
Patent
CA 2337703
The present invention provides a brush bit for cutting a core sample from an unconsolidated formation with reduced fragmentation or damage to the core sample by using a plurality of stiff bristles to cut rock from around the core sample. The present invention also provides an improved method of obtaining a core sample from an unconsolidated formation.
Contreras Gary W.
Harrigan Edward
Hill Bunker M.
Lauppe Dean
Sundquist Robert Wayne
Schlumberger Canada Limited
Smart & Biggar
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