Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges
Patent
1990-05-29
1991-08-27
Brown, David H.
Boring or penetrating the earth
Boring with explosion in inaccessible hole
Independent firing of plural charges
89 115, E21B 43116
Patent
active
050425943
ABSTRACT:
A perforating gun apparatus comprises a plurality of perforating gun, each gun containing at least one charge and a novel arming, testing and firing apparatus. The arming, testing and firing apparatus arms a first charge in a lowermost perforating gun; however, the arming of the first charge in the lowermost perforating gun allows a tester disposed at the well surface to determine the identity of the lowermost perforating gun to be detonated. Furthermore, the arming of the first charge in the lowermost perforating gun also enables the arming of a second charge in an adjacent perforating gun of the gun string. In the event the first charge is not armed as expected, the arming, testing and firing apparatus in the lowermost perforating gun bypasses the lowermost perforating gun and begins to arm the second charge in the adjacent perforating gun of the gun string. A novel housing for a perforating gun includes an isolated chamber in which a charge is mounted, the chamber having two opposite walls, one wall being circumferentially rotatable and including a radially disposed detonator. Since a detonating cord is longitudinally disposed in the chamber, the circumferentially rotatable characteristic of the one wall in association with the radial disposition of the detonator provides a safe arm feature of the perforating gun.
REFERENCES:
patent: 3116689 (1964-01-01), Sumner
patent: 3246707 (1966-04-01), Bell
patent: 3246708 (1966-04-01), Harrigan et al.
patent: 3327791 (1967-06-01), Harrigan, Jr.
patent: 3380540 (1968-04-01), Fields
patent: 3773120 (1973-11-01), Stroud et al.
patent: 3776323 (1973-12-01), Spidell
patent: 4051907 (1977-10-01), Estes
patent: 4208966 (1980-06-01), Hart
patent: 4496010 (1985-01-01), Chapman, III
patent: 4527636 (1985-07-01), Bordon
"Electronic and Small Dimension Fuses" catalog by Cooper Industries Jan., 1989.
Aseltine Clifford L.
Dailey Terrell E.
Gonzalez Manuel T.
Stulb Charlie S.
Bouchard John H.
Brown David H.
Garrana Henry N.
Schlumberger Technology Corporation
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