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US 8,695,506 B2Granted
Device for verifying detonator connection
AssigneeBaker Hughes Incorporated
InventorRonald Lanclos
Life of this patent
Estimating the term…
Abstract
A perforating system having a perforating gun with shaped charges, a chassis sub, a communication line in communication with a controller and extending through the chassis sub and perforating gun, a selectively opened and closed continuity switch in the communication line, a lead line connecting the communication line to a detonator, and an arming switch in the lead line. A method of testing the detonator involves confirming electrical continuity through the detonator.
Claims17
A perforating system comprising:
- a perforating gun with shaped charges;
- a communication line in the perforating gun that is in communication with a controller;
- a detonator in the perforating gun;
- a means for delivering a test flow of electricity through the detonator that is applied before an initiation of the detonator and below a threshold level necessary for initiating, the detonator;
- and
- a means for measuring the test flow of electricity.
3 more elements
A perforating system comprising:
- a string of perforating guns;
- shaped charges in the perforating guns and that are connected to detonating cords in the perforating guns;
- a communication line in the perforating gun that is in communication with a controller;
- a detonator in the perforating gun having an electrical inlet line and an electrical outlet line that connects between the detonator and ground;
- a system for supplying a test current to one of the detonators;
- and
- an electrical meter connected to the one of the detonators, so that when the test current flows from the communication line through one of the detonators and to ground and prior to initiation of the one of the detonators, the electrical meter can monitor the flow of the test current.
4 more elements
A method of wellbore operations comprising:
- a. providing a perforating string comprising a perforating gun, a shaped charge in the perforating gun, a detonator that is in selective electrical communication with an electrical source,
- b. inserting the perforating string into the wellbore;
- c. flowing an amount of electricity to the detonator that is below a threshold amount for initiating detonation of the detonator;
- d. monitoring electrical flow through the detonator;
- and
- e. determining the detonator is in electrical communication with an electrical source when an amount of electrical flow through the detonator is detected.
3 more elements
Dependencies are inferred from the claim text.