Patent ID: 11920462
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 9:
10. One or more non-transitory computer-readable storage media coupled to one or more processors and having instructions stored thereon which, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
generating, based on production data for a wellbore, (i) a water-oil-ratio with respect to time (WOR) dataset for the wellbore, and (ii) a time-derivative dataset (WOR′) of the WOR dataset;
generating a WOR log-log plot of the WOR dataset and a WOR′ log-log plot of the WOR′ dataset;
identifying at least one trend in the WOR log-log plot and the WOR′ log-log plot;
determining, based on the at least one identified trend, a first type of water breakthrough;
generating, based on pressure data from the wellbore, a plot of time-derivative pressure data with respect to time (P′);
determining, based on the P′ plot, a second type of water breakthrough;
correlating the first and second type of water breakthrough; and, determining, based on the correlation, whether to perform a water treatment for the wellbore.