Well pipe or object depth indicator

Details Well pipe or object depth indicator Well pipe or object depth indicator

1988-02-10

1988-11-29

Myracle, Jerry W.

Measuring and testing

Borehole or drilling

Downhole test

33125R, E21B 4700

Patent

active

047872446

ABSTRACT:
A movement measuring device includes circuitry which produces signals functionally related to the amount and direction of movement of a cable or drill line in relation to up and down movement of an object such as pipe and the like in a well bore. A totalizer device is provided with circuitry that is coupled to the movement measuring device to instrumentally display the object depth in the well bore resulting from the signals received from the movement measuring device. A switch is operatively connected to the cable or drill line and a device closes the switch when a predetermined weight or load on the cable or drill line is exceeded to provide power from a power source to the movement measuring device for transmitting the signals therefrom to the totalizer device. The totalizer device continuously displays the total depth of the object in the well bore.

REFERENCES:
patent: 3017770 (1962-01-01), Green
patent: 3643504 (1972-02-01), Rundell
patent: 3777560 (1973-12-01), Guignard
patent: 3916684 (1975-11-01), Rundell
patent: 4114435 (1978-09-01), Patton et al.
patent: 4156467 (1979-05-01), Patton et al.
patent: 4459752 (1984-07-01), Babcock

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