Reducing effects of pipe couplings in corrosion inspection of pipes
AssigneeHalliburton Energy Services, Inc.
InventorsReza Khalaj Amineh, Luis Emilio San Martin, Burkay Donderici
Life of this patent
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Abstract
Systems and methods for reducing effects of pipe couplings in electromagnetic log data. A method for corrosion detection comprises disposing an electromagnetic logging tool within a plurality of concentric pipes in a wellbore; obtaining electromagnetic log data along the concentric pipes; and identifying a location of at least one pipe coupling on at least one of the concentric pipes; and processing the electromagnetic log data to determine one or more attribute of the concentric pipes as a function of depth, wherein the processing uses the location of at least one pipe coupling to account for effect of the at least one pipe coupling on the electromagnetic log data.
Claims19
A method for corrosion detection comprising:
- disposing an electromagnetic logging tool within a plurality of concentric pipes in a wellbore;
- obtaining electromagnetic log data along the plurality of concentric pipes that include an inner pipe and one or more outer pipes;
- and
- identifying a location of at least one pipe coupling on at least one of the plurality of concentric pipes;
- and
- processing the electromagnetic log data to determine one or more attributes of the plurality of concentric pipes as a function of depth, wherein the one or more attributes comprises pipe thickness, wherein the processing uses the location of at least one pipe coupling on the inner pipe to account for effect of the at least one pipe coupling on the one or more outer pipes, and wherein the processing comprises subtracting thickness variations due to the at least one pipe coupling without defects from thickness variations for each of the plurality of concentric pipes with the at least one pipe coupling and the defects.
A corrosion monitoring system comprising:
- an electromagnetic logging tool to collect electromagnetic log data along a plurality of concentric pipes that include an inner pipe and one or more outer pipes in a wellbore;
- and
- a processing unit in communication with the electromagnetic logging tool, wherein the processing unit is operable to process the electromagnetic log data to determine one or more attributes of the plurality of concentric pipes as a function of depth, wherein the one or more attributes comprises pipe thickness, wherein the processing uses a location of at least one pipe coupling on the inner pipe to account for effect of the at least one pipe coupling on the one or more outer pipes, and wherein the processing comprises subtracting thickness variations due to the at least one pipe coupling without defects from thickness variations for each of the plurality of concentric pipes with the at least one pipe coupling and the defects.
A method for corrosion detection comprising:
- disposing an electromagnetic logging tool within a plurality of concentric pipes in a wellbore;
- obtaining electromagnetic log data along the plurality of concentric pipes that include an inner pipe and one or more outer pipes;
- and
- identifying a location of at least one pipe coupling on at least one of the plurality of concentric pipes;
- processing the electromagnetic log data to determine one or more attributes of the plurality of concentric pipes as a function of depth, wherein the processing uses the location of at least one pipe coupling on the inner pipe to account for effect of the at least one pipe coupling on the one or more outer pipes, and wherein the processing comprises subtracting responses due to the at least one pipe coupling from measured responses for each of the plurality of concentric pipes to obtain a subtracted response;
- applying inversion to the subtracted response to obtain the one or more attributes, wherein the one or more attributes comprises pipe thickness.
Dependencies are inferred from the claim text.