Detonation system having sealed explosive initiation assembly
US11402190B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2020 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Feb 25, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/117
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.