Rate of penetration recorder

Details Rate of penetration recorder Rate of penetration recorder

1977-09-26

1978-07-11

Ciarlante, Anthony V.

Measuring and testing

Borehole or drilling

Downhole test

E21B 4500

Patent

active

040994104

ABSTRACT:
A latching control circuit for a rate of penetration recorder providing an output indication in response to the vertically downward movement of a drilling swivel a predetermined penetration distance.

REFERENCES:
patent: 3541852 (1970-11-01), Brown et al.
patent: 3777560 (1973-12-01), Guignard
patent: 3853004 (1974-12-01), Westlake et al.
patent: 3916684 (1975-11-01), Rundell

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