Measuring and testing – Borehole or drilling – Downhole test
Patent
1985-09-10
1987-03-31
Kreitman, Stephen A.
Measuring and testing
Borehole or drilling
Downhole test
33178F, G01B 712, G01B 728, G01B 512
Patent
active
046533184
ABSTRACT:
A device for measuring the cross section of the stator of a downhole motor having a carrier shaped to travel through the helicoidal interior of the stator and a sensor including first and second bending beam-strain gage structures for generating electrical signals indicative of the cross section of the stator.
REFERENCES:
patent: 2514355 (1950-07-01), Barnes
patent: 2607128 (1952-08-01), Newhall
patent: 2699001 (1955-01-01), McMahan
patent: 2708316 (1955-05-01), Fredd
patent: 4021925 (1977-05-01), Loftus
patent: 4247985 (1981-02-01), Boyle
patent: 4302881 (1981-12-01), Schwind et al.
Herbert Roger P.
Jadwin Reese
Rubin Sheldon
Schulte Franklin L.
Kreitman Stephen A.
Oldham Scott M.
Smith International Inc.
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