Method and system for monitoring smart structures utilizing distributed optical sensors
First Claim
1. A system for monitoring physical parameters distributed in a structure, comprising:
- a. a distributed optical sensing device (30), comprising a fiber optic cable (20,22), deployed proximate a predetermined structure, the fiber optic cable (20,22) being encapsulated in a jacket;
b. a light source (18a) operatively in communication with the fiber optic cable (20,22);
c. a light detection device (18b), operatively in communication with the fiber optic cable (20,22), for measuring the light received at the light detection device (18b) from the fiber optic cable (20,22); and
d. a data processor (18) operatively connected to the light detection device (18b);
e. wherein;
(i) the data processor (18) uses light measured at the light detection device (18b) to calculate a desired physical parameter distributed in the structure;
(ii) the structure is a downhole structure comprising at least one of (a) a wellbore (10), (b) production tubing, (b) casing (12), and (d) non-production tubing;
(iii) the physical parameter comprises parameters of at least one of (a) the wellbore (10), (b) production tubing, (c) non-production tubing, (d) a geological formation, and (e) casing (12); and
(iv) the distributed optical sensing device (30) is integrated within a downhole component deployed permanently or temporarily in the wellbore (10) to measure at least one of (a) a physical parameter of the well, (b) drilling of and production from the well, or (c) geological formation parameters.
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Accused Products
Abstract
A monitoring system and method for monitoring a predetermined set of physical characteristics associated with a structure using the monitoring system. The system is distributed in the structure and comprises a distributed optical sensing device (30), further comprising a fiber optic cable (20, 22); a light source (18a) operatively in communication with the fiber optic cable (20, 22); a light detection device (18b), operatively in communication with the fiber optic cable (20, 22), for measuring the light received at the light detection device (18b) from the fiber optic cable (20, 22); and a data processor (18) capable of using the light measured to calculate a predetermined set of physical parameters describing the predetermined set of physical characteristics.
421 Citations
10 Claims
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1. A system for monitoring physical parameters distributed in a structure, comprising:
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a. a distributed optical sensing device (30), comprising a fiber optic cable (20,22), deployed proximate a predetermined structure, the fiber optic cable (20,22) being encapsulated in a jacket;
b. a light source (18a) operatively in communication with the fiber optic cable (20,22);
c. a light detection device (18b), operatively in communication with the fiber optic cable (20,22), for measuring the light received at the light detection device (18b) from the fiber optic cable (20,22); and
d. a data processor (18) operatively connected to the light detection device (18b);
e. wherein;
(i) the data processor (18) uses light measured at the light detection device (18b) to calculate a desired physical parameter distributed in the structure;
(ii) the structure is a downhole structure comprising at least one of (a) a wellbore (10), (b) production tubing, (b) casing (12), and (d) non-production tubing;
(iii) the physical parameter comprises parameters of at least one of (a) the wellbore (10), (b) production tubing, (c) non-production tubing, (d) a geological formation, and (e) casing (12); and
(iv) the distributed optical sensing device (30) is integrated within a downhole component deployed permanently or temporarily in the wellbore (10) to measure at least one of (a) a physical parameter of the well, (b) drilling of and production from the well, or (c) geological formation parameters. - View Dependent Claims (2, 3, 4)
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5. A method for monitoring a predetermined set of physical characteristics associated with a structure or a process involving the structure, for a monitoring system, distributed in the structure, the method comprising:
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a. deploying a distributed optical sensing device (30) proximate a structure;
b. providing light to the distributed optical sensing device (30) from a light source (18a);
c. providing continuous light from a source of continuous light;
d. providing pulsed light from a pulsed light probe beam;
e. measuring light from the distributed optical sensing device (30) incident at a light detection device (18b) with the light detection device (18b);
f. using a data processor (18) to substantially simultaneously obtain and continuously monitor a plurality of measurements from the distributed optical sensing device (30) at a plurality of locations along the distributed optical sensing device (30) using the measured light incident at the light detection device (18b);
g. determining Brillouin loss;
h. using the Brillouin loss to obtain the desired physical parameter measurements; and
i. calculating a predetermined set of physical characteristics for a desired physical parameter using the plurality of measurements. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification