High voltage explosive assembly for downhole detonations
AssigneeHunting Titan, Inc.
InventorsNolan C. Lerche, James E. Brooks
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Abstract
A downhole explosive detonation comprises a high voltage electro-explosive initiator comprising an input high voltage power supply with a low impedance shunting fuse, a flexible electrical link and a capacitor discharge unit. Explosive is initiated in a direction approximately parallel, or in another version perpendicular to the capacitor discharge unit. A unique configuration and construction of the assembly allows installation through a small service port in the gun housing structure for more efficient gun arming. A real time downhole voltage monitoring is described that transmits voltage readings to the surface during a firing sequence.
Claims11
A downhole explosive initiation system comprising:
- a voltage multiplier circuit having a positive input, a negative input, a positive output, and a negative output;
- a capacitive discharge unit connected to the positive output and negative output of the voltage multiplier circuit;
- an electro-explosive initiator coupled to an output of the capacitive discharge unit;
- wherein the voltage multiplier circuit comprises a low impedence shunt electrically in parallel with the positive input and negative input, a power supply electrically in parallel with the positive input and negative input, a communications microprocessor electrically in parallel with the positive input and negative input and electrically connected to the power supply and a voltage multiplier that is electrically in parallel with the positive input and negative input and electrically connected to the positive output or negative output.
Dependencies are inferred from the claim text.