Ammunition and explosives – Igniting devices and systems
Patent
1994-03-29
1996-04-09
Pihulic, Daniel T.
Ammunition and explosives
Igniting devices and systems
F42C 1912
Patent
active
055051340
ABSTRACT:
A perforating apparatus adapted to be disposed in a wellbore includes a plurality of shaped charges, an electrical current carrying conductor, and a plurality of exploding foil or exploding bridgewire initiators disposed, respectively, between the plurality of charges and the current carrying conductor for simultaneously detonating thereby simultaneously detonating all of the plurality of shaped charges of the perforating apparatus in response to a current flowing in the conductor. Each of the shaped charges include a new secondary explosive primer disposed in the apex of the charge for detonating in response to a detonation of the exploding foil or exploding bridgewire initiator. The electrical conductor may include a flat cable having a plurality of such initiators spaced apart at predetermined intervals along the cable and adapted to wrap helically around the perforating apparatus until each of the initiators abut against a shaped charge of the plurality of charges in the perforating apparatus. In an alternate embodiment, the electrical current carrying conductor may include a flat sheet having a specific length and width and including a plurality of such initiators. The flat sheet is adapted to wrap around the entire circumference of the perforating apparatus until each of the initiators in the sheet abut against a shaped charge of the plurality of charges in the perforating apparatus. The current in the conductor may originate from a compressed magnetic flux (CMF) current pulse generator or from a charging capacitor of a conventional system including one or more charging capacitors and associated discharge switches. When the perforating apparatus includes a first and second perforator separated by an adaptor, the adaptor includes a pressure bulkhead adapted to seal the first perforator from the second perforator, an explosive disposed in contact against one side of the bulkhead and a piezoelectric ceramic disposed in contact against the other side of the bulkhead.
REFERENCES:
patent: 3181463 (1965-05-01), Morgan et al.
patent: 3640224 (1972-02-01), Petrick et al.
patent: 3695368 (1972-10-01), Lanmon, II
patent: 3978791 (1976-09-01), Lemley et al.
patent: 4422381 (1983-12-01), Barrett
patent: 4441427 (1984-04-01), Barrett
patent: 4471697 (1984-09-01), McCormick et al.
patent: 4517497 (1985-05-01), Malone
patent: 4559875 (1985-12-01), Marshall
patent: 4627353 (1986-12-01), Chawla
patent: 4658900 (1987-04-01), Stout
patent: 4669384 (1987-06-01), Chawla et al.
patent: 4735145 (1988-04-01), Johnson et al.
patent: 4762067 (1988-08-01), Barker et al.
patent: 4777878 (1988-10-01), Johnson et al.
patent: 4944225 (1990-07-01), Barker
patent: 4955939 (1990-09-01), Petrousky et al.
patent: 5074167 (1991-12-01), Yoshimura et al.
patent: 5088413 (1992-02-01), Huber et al.
patent: 5094167 (1992-03-01), Hendley, Jr.
patent: 5347929 (1994-09-01), Lerche et al.
"Small Helical Flux Compression Amplifier" by J. E. Gover, O. M. Stuetzer, and J. L. Johnson, Sandia Laboratories, Megagauss Physics and Technology, 1979.
"The Central Power Supply", Showcase for Technology, Conference and Exposition, 1981.
"A New Kind of Detonator-the Slapper" by J. R. Stroud, Lawrence Livermore Laboratory, University of California, Livermore, California, pp. 22-1 through 22-6.
"Shock Initiation of Explosive Pellets at Low Temperatures" D. S. Gilman, Lawrence Livermore Laboratory, pp. 41-1 through 41-5.
"A Low-Energy Flying Plate Detonator" by Albin K. Jacobson, Sandia National Laboratories, Albuquerque, New Mexico, pp. 49-1 through 49-20.
"High Temperature Stable Detonators" by Robert H. Dinegar, Proc 12th Symposium on Explosives and Pyrotechnics, San Diego, Calif. Mar. 13-15, 1984, Los Alamos National Laboratory, pp. 4-1 through 4-4.
"National Course on Fuzing and Initiation Session VI Initiation Systems" by Dick Weingart, Lawrence Livermore National Laboratory Sep. 1989.
"A Fast, Low Resistance Switch for Small Slapper Detonators" by D. D. Richardson and D. A. Jones, Department of Defense Materials Research Laboratories, Report MRL-R-1030, Oct. 1986.
Aseltine Clifford L.
Brooks James E.
Lerche Nolan C.
Parrott Robert A.
Rozek Kenneth E.
Bouchard John H.
Pihulic Daniel T.
Schlumberger Technical Corporation
LandOfFree
Perforating gun having a plurality of charges including a corres does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Perforating gun having a plurality of charges including a corres, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perforating gun having a plurality of charges including a corres will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-132208