Method and apparatus for a tubing conveyed perforating guns fire identification system using fiber optics
First Claim
1. A method for detecting detonation of a tubing conveyed perforating (TCP) gun in a wellbore comprising:
- (a) placing a sensor in a wellbore;
(b) detonating a TCP charge; and
(c) detecting a change in an electrical property of a sleeve surrounding the TCP charge indicative of detonation of the TCP charge.
1 Assignment
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Accused Products
Abstract
A method and apparatus for determining whether a tubing conveyed perforating (TCP) gun has fired by detecting a change in characteristics of the flow of an oil well. A method and apparatus detects the presence of fluorescent tracer dye to determine whether or not a TCP gun has fired. The method and apparatus detects a change is capacitance, or fiber optic electrical properties to determine whether or not a TCP gun has fired. The method and apparatus detects the number of charges fired to determine whether or not all TCP guns have fired and also provides a method and apparatus for determining the contributions of injection wells to producing wells by introducing fluorescent tracers into injection wells and detecting the presence of the fluorescent tracers at production wells. A method and apparatus is provided for placing fluorescent dye particles in a gravel pack to sense when a gravel pack is deteriorating by detecting the tracer dye particles in the well flow.
28 Citations
19 Claims
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1. A method for detecting detonation of a tubing conveyed perforating (TCP) gun in a wellbore comprising:
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(a) placing a sensor in a wellbore;
(b) detonating a TCP charge; and
(c) detecting a change in an electrical property of a sleeve surrounding the TCP charge indicative of detonation of the TCP charge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for detecting detonation of a tubing conveyed perforating (TCP) gun in a wellbore comprising:
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a TCP charge and detonator deployed in the well bore;
a sleeve surrounding the TCP charge and a detonation sensitive device that senses a change in an electrical property of the sleeve to indicate the detonation of the TCP charge. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A system for detecting detonation of a tubing conveyed perforating (TCP) gun in a wellbore comprising:
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a drill string comprising a TCP charge and detonator deployed in the well bore;
a sleeve surrounding the TCP charge; and
a detonation sensitive device that senses a change in an electrical property of the sleeve to indicate the detonation of the TCP charge. - View Dependent Claims (17, 18, 19)
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Specification