E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 47/024 (2006.01) E21B 47/00 (2006.01) E21B 47/04 (2006.01)
Patent
CA 2640079
An apparatus and method for measuring depth, velocity, or both depth and velocity of instrumentation within a wellbore is provided. The apparatus includes a downhole portion movable within the wellbore in a direction generally parallel to the wellbore. The apparatus further includes a first acceleration sensor mounted at a first position within the downhole portion. The first acceleration sensor generates a first signal indicative of a first acceleration in a first direction generally parallel to the wellbore at the first position. The apparatus further includes a second acceleration sensor mounted at a second position within the downhole portion. The second acceleration sensor generates a second signal indicative of a second acceleration in a second direction generally parallel to the wellbore at the second position. The apparatus further includes a bend sensor generating a third signal indicative of an amount of bend of at least a portion of the downhole portion.
Ekseth Roger
Mullin Stephen Victor
Weston John Lionel
Gyrodata Incorporated
Robic
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