In-drilling alignment

Details In-drilling alignment In-drilling alignment

E - Fixed Constructions

21

B

E21B 47/024 (2006.01) G01C 25/00 (2006.01)

Patent

CA 2636564

To limit the growth of errors of an inertial navigation system for measurement- while-drilling, in-drilling alignment methods can be used. A pneumatics-based design of an apparatus for an in-drilling alignment method and its implementation downhole are described.

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