PERMANENT DOWNHOLE DEPLOYMENT OF OPTICAL SENSORS
First Claim
1. A method of permanently monitoring wellbore or formation parameters, comprising:
- providing a casing string having at least one optical sensor attached thereto;
lowering the casing string into the wellbore with the at least one optical sensor attached thereto such that said at least one optical sensor lies below the surface of the ground;
measuring one or more wellbore or formation parameters with the at least one optical sensor while drilling; and
setting the casing string within the wellbore with a bonding material.
2 Assignments
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Accused Products
Abstract
The present invention involves methods and apparatus for permanent downhole deployment of optical sensors. Specifically, optical sensors may be permanently deployed within a wellbore using a casing string. In one aspect, one or more optical sensors are disposed on, in, or within the casing string. The optical sensors may be attached to an outer surface of the casing string or to an inner surface of the casing string, as well as embedded within a wall of the casing string. The optical sensors are capable of measuring wellbore parameters during wellbore operations, including completion, production, and intervention operations.
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Citations
29 Claims
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1. A method of permanently monitoring wellbore or formation parameters, comprising:
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providing a casing string having at least one optical sensor attached thereto; lowering the casing string into the wellbore with the at least one optical sensor attached thereto such that said at least one optical sensor lies below the surface of the ground; measuring one or more wellbore or formation parameters with the at least one optical sensor while drilling; and setting the casing string within the wellbore with a bonding material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29)
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12. A method of permanently monitoring wellbore or formation parameters, comprising:
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providing a casing string having at least one optical sensor attached thereto; locating the casing string within a wellbore; measuring one or more wellbore or formation parameters with the at least one optical sensor while drilling; and using the one or more parameters to determine the flow rate of a fluid or one or more volumetric fractions of the fluid wherein the optical sensors are attached to the outer surface of the casing string.
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13. A method of permanently monitoring wellbore or formation parameters, comprising:
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providing a casing string having at least one optical sensor attached thereto; locating the casing string within a wellbore; measuring one or more wellbore or formation parameters with the at least one optical sensor while drilling; and using the one or more parameters to determine the flow rate of a fluid or one or more volumetric fractions of the fluid wherein the fluid is drilling fluid. - View Dependent Claims (14, 15, 16)
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27. A method of permanently monitoring wellbore or formation parameters, comprising:
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providing a casing string having at least one optical sensor attached thereto; locating the casing string within a wellbore; measuring one or more wellbore or formation parameters with the at least one optical sensor while drilling; and drilling into the formation using a tubular body having an earth removal member operatively attached to its lower end, wherein measuring one or more parameters includes performing acoustic monitoring of drilling fluid while drilling into the formation. - View Dependent Claims (28)
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Specification