E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 47/18 (2006.01) E21B 47/14 (2006.01)
Patent
CA 2546531
A communication system for a casing while drilling system is provided. The casing while drilling system is adapted to advance a bottom hole assembly into a subsurface formation via a casing. The communication system comprises a high frequency modulator and a transducer. The modulator is positioned in the bottom hole assembly and adapted to generate a mud pulse by selectively restrict mud flow passing therethrough. The transducer is adapted to detect the mud pulse generated by the modulator.
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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