Positive fire indicator system

Details Positive fire indicator system Positive fire indicator system

1983-01-20

1984-10-23

Leppink, James A.

Boring or penetrating the earth

Boring with explosion in inaccessible hole

Firing control mechanically actuated in bore

166250, 166297, 102200, E21B 43116

Patent

active

044782942

ABSTRACT:
A positive fire indicator well perforating system is disclosed. Predetermined time delay is introduced in a downhole series sequentially fired string of well perforating guns. Surface transducers detect vibratory energy from the downhole guns and record it as a function of time.

REFERENCES:
patent: 3050149 (1962-08-01), Itria et al.
patent: 3100444 (1963-08-01), Ball et al.
patent: 3367442 (1968-02-01), Setser
patent: 3860865 (1975-01-01), Stroud et al.
patent: 3971317 (1976-07-01), Gemmell et al.
patent: 4208966 (1980-06-01), Hart
patent: 4220212 (1980-09-01), Lands, Jr.
patent: 4406226 (1983-09-01), Davitt et al.

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