E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/2
E21B 49/02 (2006.01) E21B 4/02 (2006.01) E21B 7/06 (2006.01) E21B 25/04 (2006.01) E21B 25/16 (2006.01)
Patent
CA 2008975
ABSTRACT OF THE INVENTION The present invention comprises a novel method and apparatus for sinking drill holes in underground rock formations while generating drill cores as rock samples. More particularly, the present invention discloses a method and apparatus which allows for an expanded analysis of ground formations over a larger area through the extraction of drill cores as rock samples. The method and apparatus herein disclosed allows one to drill a number of core shaft sections from the base of a main shaft section in various directions in order to obtain a number of sample cores.
Jurgens Rainer
Van Es Johann
Baker Hughes Incorporated
Eastman Christensen Company
Jurgens Rainer
Swabey Ogilvy Renault
Van Es Johann
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