Wellbore Gun Perforating System and Method

摘要

A wellbore perforating system and method with reliable and safer connections in a perforating gun assembly is disclosed. The system/method includes a gun string assembly (GSA) deployed in a wellbore with multiple perforating guns attached to plural switch subs. The perforating guns are pre-wired with a cable having multi conductors; the multi conductors are connected to electrical ring contacts on either end of the perforating guns. The switch subs are configured with electrical contacts that are attached to the electrical contacts of the perforating guns without the need for manual electrical connections and assembly in the field of operations. The system further includes detonating with a detonator that is positioned upstream of the perforating gun. The detonator is wired to a switch that is positioned downstream of the perforating gun.

主权项

1. An electrical system for use in a perforating gun assembly, said system comprising:
(a) a first perforating gun; (b) a first switch sub; (c) a second switch sub; wherein said first switch sub comprises a first switch; said second switch sub comprises a second switch; said first switch is configured with a first fire output, a first ground output and a first through output; said second switch comprises a detonator; said detonator is configured with a detonator fire input and a detonator ground input through said first perforating gun; said second switch is configured with a second ground input and a second through input; said first fire output electrically connected to said detonator fire input through said first perforating gun; and said first through output is electrically connected to said second through input through said first perforating gun.