Assembly of RF-safe switch and detonator system in a non-RF free environment

摘要

A method for assembling a radio frequency (RF) safe switch and detonator system in a non-RF free environment. More particularly, the method is for assembling an RF-safe switch and detonator system for an oil well perforating gun at a well-site that is in a non-RF free environment.

主权项

1. A method comprising:
(a) selecting an intelligent switch system and a shunted detonator, wherein the shunted detonator is not an RF-safe detonator and comprises a shunt and a detonator having detonator leads connected to the shunt; (b) assembling a perforating gun system without the shunted detonator at a first location, wherein the first location is not at a well-site location at which the perforating gun system will be used for perforating, and wherein the step of assembling the perforating gun at the first location comprises
(i) installing the intelligent switch system and wiring into a loading tube, and(ii) installing shaped charges and detonating cord into the loading tube; (c) testing the assembled perforating gun system; (d) transporting the assembled perforating gun system to the well-site location after the step of testing the assembled perforating gun system; (e) transporting the shunted detonator to the well-site location; (f) at the well-site location, removing the shunt from the detonator by disconnecting each of the detonator leads from the shunt; (g) trimming each of the detonator leads so that each trimmed detonator leads is at most eight inches in length; and (h) connecting the trimmed detonator leads to the intelligent switch system of the assembled perforating gun system at the well-site location, wherein
(i) the step of connecting is performed at the well-site location that is a non-RF safe environment, and,(ii) the combination of the detonator, the trimmed detonator leads, and the intelligent switch system is an RF-safe switch and detonator system.