US 12,111,245 B1
Calibrating close interval survey data with remote monitoring data
Matthew Albert Barrett, Calgary (CA); Antonio Laranjo Da Costa, Calgary (CA); and William Philip Maize, Calgary (CA)
Assigned to Mobiltex Data Ltd., Alberta (CA)
Filed by Mobiltex Data Ltd., Calgary (CA)
Filed on Mar. 16, 2023, as Appl. No. 18/122,217.
Int. Cl. G01N 17/02 (2006.01)
CPC G01N 17/02 (2013.01) 19 Claims
OG exemplary drawing
 
1. A method for calibrating close interval survey (CIS) measurements, the method comprising:
obtaining a plurality of CIS measurements from a plurality of CIS locations along a pipeline;
obtaining a first plurality of remotely monitored measurements from a plurality of test stations positioned along the pipeline for a first time period;
assigning, for each of the plurality of test stations, one of the plurality of CIS locations as an adjacent CIS location based on location data for the plurality of CIS locations and the plurality of test stations;
calibrating the CIS measurements with the remotely monitored measurements by using the first plurality of remotely monitored measurements for each of the plurality of test stations as a proxy measurement for the adjacent CIS location;
applying a seasonal variation model to the first plurality of remotely monitored measurements to obtain seasonally adjusted remotely monitored measurements for each test station of the plurality of test stations for a second time period;
extrapolating the seasonally adjusted remotely monitored measurements along the pipeline between two adjacent test stations of the plurality of test stations to obtain seasonally adjusted remotely monitored measurements between the two adjacent test stations; and,
projecting the plurality of CIS measurements to the second time period by adjusting the plurality of CIS measurements based on the extrapolation of the seasonally adjusted remotely monitored measurements along the pipeline to obtain projected CIS potential measurements for the second time period.