Time recorder for in-hole motors

Details Time recorder for in-hole motors Time recorder for in-hole motors

1981-05-04

1983-06-14

Purser, Ernest R.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

73151, 346 33WL, E21B 4500

Patent

active

043877745

ABSTRACT:
Real time responsive devices are mounted at the inlet to an in-hole motor to measure the interval of time during which drilling fluid circulates through the motor.

REFERENCES:
patent: 2958821 (1960-11-01), Webb
patent: 3588908 (1971-06-01), Lindsey
patent: 3788136 (1974-01-01), Park
patent: 3908453 (1975-09-01), Jeter

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