Methods and systems for controlling networked electronic switches for remote detonation of explosive devices

摘要

A method and system are disclosed for controlling a plurality of perforating gun assemblies arranged in a gun train and lowered into a wellbore. The perforating gun assemblies are connected to a top sub controller that is also lowered into the wellbore. The top sub controller includes a first communications module to communicate with an above-ground control panel via a wireline and a second communications module to communicate with a switch sub in each the plurality of perforating gun assemblies via a network bus. Each switch sub has a unique network address. During assembly, the control panel automatically detects the order of the perforating gun assemblies in the gun train based on polling each of the switch subs of the plurality of perforating gun assemblies using the respective unique network addresses.

主权项

1. An addressable switch system, comprising:
a plurality of perforating gun assemblies arranged in a gun train and lowered into a wellbore, each of the plurality of perforating gun assemblies comprising,
a switch sub comprising a network communications module with a unique network address for communications over a network bus, anda perforating gun comprising explosives; a control panel for at least one of monitoring and controlling the plurality of perforating gun assemblies; and a top sub comprising a top sub controller that is lowered into the wellbore, the top sub controller having a first communications module to communicate with the control panel via a wireline and a second communications module to communicate with the plurality of perforating gun assemblies via the network bus, wherein the control panel comprises an interface to select one perforating gun assembly from the plurality of perforating gun assemblies based on the unique network address of the switch sub corresponding to the selected perforating gun assembly, and to provide a command signal that at least one of arms and fires the perforating gun corresponding to selected perforating gun assembly, and wherein the control panel is configured to automatically detect an order of the perforating gun assemblies in the gun train based on polling each of the switch subs of the plurality of perforating gun assemblies using the respective unique network addresses.