CPC E21B 43/1185 (2013.01) [E21B 23/00 (2013.01); E21B 23/065 (2013.01); E21B 43/117 (2013.01); E21B 43/119 (2013.01); F42D 1/05 (2013.01)] | 16 Claims |
1. A method for perforating a tubular string installed in a wellbore for producing hydrocarbons from a subterranean earthen formation, the method comprising:
(a) assembling a first tool string to include at least one original perforating gun with at least one original perforating charge located within the original perforating gun, and an original gun switch in communication with the original perforating charge, wherein the original gun switch comprises a printed circuit board and an electrical circuit formed on the printed circuit board;
(b) inserting the first tool string into a first wellbore and delivering a signal to the original gun switch to initiate detonation of the original perforating charge within the original perforating gun and perforating the tubular string;
(c) retrieving the first tool string from the first wellbore and recovering the original gun switch from the first tool string;
(d) assembling a new tool string that is different from the first tool string to include at least one new perforating gun with at least one new perforating charge located within the new perforating gun, wherein the new tool string further comprises the recovered original gun switch whereby the original gun switch is in communication with the new perforating charge; and
(e) inserting the new tool string into at least one of the first wellbore and a different wellbore, and delivering a signal to the original gun switch to initiate detonation of a second perforating charge within the second perforating gun.
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