Shaped-charge with simultaneous multi-point initiation of explosives
First Claim
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1. An apparatus for perforating an earth formation from a borehole, said apparatus connected to an energy source and comprising:
- (a) a housing adapted to be deployed within said borehole;
(b) a liner located within said housing;
(c) a detonator assembly located between said liner and said housing and comprising a plurality of detonators for producing approximately simultaneous detonation waves when activated by said energy source, where in said plurality of detonators is arranged in a predetermined pattern; and
(d) explosive material located between said liner and said detonator assembly, said explosive material cooperating with such detonator assembly to activate, approximately simultaneously in response to said detonation waves, at a plurality of initiation points determined by the pattern of said plurality of detonators.
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Abstract
An apparatus for perforating an earth formation from a borehole having a housing, a detonator assembly, explosive material for producing the implosion forces and a metal liner of implosive geometry. The detonator assembly includes a predetermined pattern of precision electronic detonators based on exploding foil initiator, exploding bridge wire, spark gap or laser technology to simultaneously produce multiple initiation points of the explosive material for enhancing the implosion forces.
157 Citations
5 Claims
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1. An apparatus for perforating an earth formation from a borehole, said apparatus connected to an energy source and comprising:
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(a) a housing adapted to be deployed within said borehole; (b) a liner located within said housing; (c) a detonator assembly located between said liner and said housing and comprising a plurality of detonators for producing approximately simultaneous detonation waves when activated by said energy source, where in said plurality of detonators is arranged in a predetermined pattern; and (d) explosive material located between said liner and said detonator assembly, said explosive material cooperating with such detonator assembly to activate, approximately simultaneously in response to said detonation waves, at a plurality of initiation points determined by the pattern of said plurality of detonators. - View Dependent Claims (2, 3, 4, 5)
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Specification
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Current AssigneeWestern Atlas International Incorporated (Northrop Grumman Corporation)
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Original AssigneeWestern Atlas International Incorporated (Northrop Grumman Corporation)
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InventorsEllis, James
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Primary Examiner(s)Nelson, Peter A.
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Application NumberUS08/340,750Time in Patent Office412 DaysField of Search102/312, 102/313, 102/201, 102/202.7, 102/202.8, 102/307, 102/309, 102/310US Class Current102/313CPC Class CodesE21B 43/1185 Ignition systemsF42B 1/02 Shaped or hollow charges bl...F42B 3/08 with cavities in the charge...
