System, method and computer-program product for in-situ calibration of a wellbore resistivity logging tool
First Claim
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1. A method for performing a wellbore operation using in-situ calibration of a logging tool deployed along a wellbore, the method comprising:
- extending the logging tool, coupled to a control center, into the wellbore positioned within a hydrocarbon-bearing formation;
acquiring a first measurement signal of the formation using the logging tool;
simulating, via the control center, a second measurement signal of the formation;
calculating, via the control center, a calibration coefficient based on a comparison between the acquired first measurement signal and the simulated second measurement signal;
acquiring, via the logging tool, a third measurement signal of the formation using the logging tool, wherein the first, second and third measurement signals correspond to the same transmitter-receiver pair of the logging tool;
while the logging tool is within the wellbore, calibrating the acquired third measurement signal using the calibration coefficients inverting the calibrated third measurement signal to generate petrophysical characteristics of the formation; and
using the petrophysical characteristics to perform at least one of a wellbore placement operation, wellbore drilling operation, wellbore landing operation, or geo-steering operation.
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Abstract
In-situ calibration of a resistivity logging tool is accomplished using a variety of methods in which deep measurement signals are calibrated using acquired and simulated measurement signals.
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Citations
25 Claims
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1. A method for performing a wellbore operation using in-situ calibration of a logging tool deployed along a wellbore, the method comprising:
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extending the logging tool, coupled to a control center, into the wellbore positioned within a hydrocarbon-bearing formation; acquiring a first measurement signal of the formation using the logging tool; simulating, via the control center, a second measurement signal of the formation;
calculating, via the control center, a calibration coefficient based on a comparison between the acquired first measurement signal and the simulated second measurement signal;acquiring, via the logging tool, a third measurement signal of the formation using the logging tool, wherein the first, second and third measurement signals correspond to the same transmitter-receiver pair of the logging tool; while the logging tool is within the wellbore, calibrating the acquired third measurement signal using the calibration coefficients inverting the calibrated third measurement signal to generate petrophysical characteristics of the formation; and using the petrophysical characteristics to perform at least one of a wellbore placement operation, wellbore drilling operation, wellbore landing operation, or geo-steering operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification