Detonation system having sealed explosive initiation assembly
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United States of America Patent
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Aug 2, 2022
Grant Date -
Feb 25, 2021
app pub date -
Aug 18, 2020
filing date -
Aug 22, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A detonation system for a perforating gun assembly. The detonation system includes a tandem sub having a first end and a second opposing end. Each of the first and second ends is connected to a respective perforating gun. The tandem sub has an inner bore, and a switch housing residing within the inner bore. The tandem sub also has an addressable switch residing within the switch housing with the switch being configured to receive instruction signals from a surface by means of an electric line. The addressable switch is in communication with a signal transmission pin and a detonator pin. The detonator pin sends a detonation signal from the addressable switch to a detonator in an adjacent perforating gun. The wiring connections for the pins may be pre-assembled before the perforating guns are delivered to the field. The detonation system utilizes a carrier end plate, wherein the end plate and pins seal off the tandem sub from wellbore fluids and debris following detonation of explosive charges in an associated perforating gun.
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