Detonators for use with explosive devices

Details Detonators for use with explosive devices Detonators for use with explosive devices

1999-09-23

2004-06-22

Jordan, Charles T. (Department: 3641)

Ammunition and explosives

Igniting devices and systems

Electrical primer or ignitor

C102S202500, C102S206000, C102S217000

Reexamination Certificate

active

06752083

ABSTRACT:

BACKGROUND
The invention relates to detonators for use with explosive devices.
Explosive devices such as shaped charges in perforating guns are commonly used in a well to create openings in a casing section and to extend perforations into a surrounding formation to allow communication of fluids between the formation and the well surface. Explosives may also be used to activate downhole tools, such as packers. Other types of explosive devices include those used in mining operations and other surface applications.
Detonators used with explosive tools are of two general types: electrical and percussion. An electrical detonator may also be referred as an electro-explosive device (EED), which may include hot-wire detonators, semiconductor bridge (SCB) detonators, or exploding foil initiator (EFI) detonators.
An EFI detonator includes an electrically conductive metal foil connected to a source of current. The metal foil includes a narrow neck section that explodes or vaporizes when a high current is discharged quickly through the neck section. The exploding neck section of the foil shears a small flyer from a disk that is disposed in contact with the foil. The flyer travels or flies through a barrel to impact a secondary explosive to initiate a detonation.
A conventional EFI detonator typically includes a capacitor discharge unit of relatively large size, which leads to increased sizes for housings in downhole tools for containing such detonators. Further, because of their relatively large sizes, the efficiencies of conventional EFI detonators are reduced due to increased resistance and inductance of electrical paths in the detonators. As a result, higher voltages and power may be needed for activating such detonators. A need thus continues to exist for improved EFI detonators.
SUMMARY
In general, according to one embodiment, a detonator assembly for use with an explosive device includes a support structure, an exploding foil initiator mounted on the support structure, and at least another component mounted on the support structure. An opening formed in the support structure adjacent the exploding foil initiator, with the opening adapted to receive an initiating element of the exploding foil initiator.
Other features and embodiments will be apparent from the following description, the drawings, and the claims.


REFERENCES:
patent: 3181463 (1965-05-01), Morgan et al.
patent: 3327791 (1967-06-01), Harrigan, Jr.
patent: 3366055 (1968-01-01), Hollander, Jr.
patent: 3517758 (1970-06-01), Schuster
patent: 3640224 (1972-02-01), Petrick et al.
patent: 3640225 (1972-02-01), Carlson et al.
patent: 3978791 (1976-09-01), Lemley et al.
patent: 4137850 (1979-02-01), Donner
patent: 4307663 (1981-12-01), Stonestrom
patent: 4393779 (1983-07-01), Brede et al.
patent: 4421030 (1983-12-01), DeKoker
patent: 4421381 (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: 4527636 (1985-07-01), Bordon
patent: 4592280 (1986-06-01), Shores
patent: 4602565 (1986-07-01), MacDonald et al.
patent: 4632034 (1986-12-01), Colle, Jr.
patent: 4638712 (1987-01-01), Chawla et al.
patent: 4662281 (1987-05-01), Wilhelm et al.
patent: 4700629 (1987-10-01), Benson et al.
patent: 4708060 (1987-11-01), Bickes, Jr. et al.
patent: 4729315 (1988-03-01), Proffit 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: 4788913 (1988-12-01), Stroud et al.
patent: 4831933 (1989-05-01), Nerheim et al.
patent: 4843964 (1989-07-01), Bickes, Jr. et al.
patent: 4886126 (1989-12-01), Yates, Jr.
patent: 4944225 (1990-07-01), Barker
patent: 5088413 (1992-02-01), Huber et al.
patent: 5094166 (1992-03-01), Hendley, Jr.
patent: 5094167 (1992-03-01), Hendley, Jr.
patent: 5172717 (1992-12-01), Boyle et al.
patent: 5347929 (1994-09-01), Lerche et al.
patent: 5413045 (1995-05-01), Miszewski
patent: 5505134 (1996-04-01), Brooks et al.
patent: 5520114 (1996-05-01), Guimard et al.
patent: 5539636 (1996-07-01), Marsh et al.
patent: 5706892 (1998-01-01), Aeschbacher, Jr. et al.
patent: 5731538 (1998-03-01), O'Brien et al.
patent: 5756926 (1998-05-01), Bonbrake et al.
patent: 0 029 671 (1983-09-01), None
patent: 0 601 880 (1994-06-01), None
patent: 0 604 694 (1994-07-01), None
patent: 0 675 262 (1995-10-01), None
patent: 677824 (1952-08-01), None
patent: 693164 (1953-06-01), None
patent: 2118282 (1983-10-01), None
patent: 2100395 (1984-08-01), None
patent: 2190730 (1987-11-01), None
patent: 2226872 (1990-07-01), None
patent: 2265209 (1993-09-01), None
patent: 2290855 (1996-01-01), None
patent: WO 96/23195 (1996-08-01), None
patent: WO 98/38470 (1998-09-01), None
James E. Brooks,A Simple Method for Estimating Well Productivity,Society of Petroleum Engineers 1-8 (Jun. 2-3, 1997).
“Performance Criteria for Small Slapper Detonators” Controller, Her Majesty's Stationery Office, London 1984.
“New Developments in the Field of Firing Techniques” by K. Ziegler Propellants, Explosives, Pyrotechnics 12, 115-120 (1987).
“Application of Slapper Detonator Technology to the Design of Special Detonation Systems,” by W. H. Meyers Proc. 12thSymposium on Explosives and Pyrotechnics, San Diego, California, Mar. 13-15, 1984, Detonation Systems Development, Los Alamos National Laboratory, pp. 4-5 through 4-19.
“CP DDT Detonators: II. Output Characterization,” by M. L. Lieberman Sandia National Laboratories Report SAND 83-1893, Albuquerque, New Mexico, pp. 3-105 through 3-112.
“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, Victoria, Australia.
“The Effect of Switch Resistance on the Ringdown of a Slapper Detonator Fireset,” by D. D. Richardson Department of Defense Materials Research Laboratories Report MRL-R-1004, Victoria, Australia.
“Flyer Plate Motion and Its Deformation During Flight,” by H. S. Yadav and N. K. Gupta Int. J. Impact Engng, vol. 7, No. 1, 1988, pp. 71-83.
“Mossbauer Study of Shock-Induced Effects in the Ordered Alloy Fe50Ni50In Meteorites,” By R. B. Scorzelli, I. S. Azevedo, J. Danon and Marc A. Meyers J. Phys. F: Met Phys. 17(1987), pp. 1993-1997.
“Effect of Shock-Stress Duration on the Residual Structure and Hardness of Nickel, Chromel, and Inconel,” by L. E. Murr and Jong-Yuh Huang Materials Science and Engineering, 19 (1975), pp. 115-122.
Critical Energy Criterion for the Shock Initiation of Explosives by Projectile Impact, by H. R. James Propellants, Explosives, Pyrotechnics 13, (1988), pp. 35-41.
“High-Temperature-Stable Detonators,” by R. H. Dinegar Proc. 12thSymposium on Explosives and Pyrotechnics, San Diego, California, Mar. 13-15, 1984, Los Alamos National Laboratory, pp. 4-1 through 4-4.
“Shock Initiation of PETN,” by J. C. Cheng Monsanto Research Corporation, Miamisburg, Ohio, pp. 1-31 through 1-35.
“Exploding Metallic Foils for Slapper, Fuse, and Hot Plasma Applications: Computational Predictions, Experimental Observations,” by I. R. Lindemuth, J. H. Brownell, A. E. Greene, G. H. Nickel, T. A. Oliphant and D. L. Weiss, Thermonuclear Applications Group, Applied Theoretical Physics Division, and W. F. Hemsing and I. A. Garcia, Detonation Systems Group, Dynamic Testing Division, Los Alamos National Laboratory, Los Alamos, New Mexico, pp. 229-305.
“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.
“Pyrotechnic Ignition in Minislapper Devices,” by D. Grief and D. Powell Awre, Aldermaston, Reading RG7-4PR, Berkshire, England, Controller, HMSO, London, 1981, pp. 43-1 through 43-10.
“Exploding Foils—The Production of Plane Shock Waves and the Acceleration of Thin Plates,” by D. V. Keller & J. R. Penning, Jr. The Boeing Company, Seattle, Washington, pp. 263-277.
“Acceleration of Thin Plates by Exploding Foil Techniques,” by A. H. Guenther, D. C. Wunsch and T. D. Soapes Pulse Power Laboratory, Physics Division, Research Directora

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