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

Claim 0:
1. A method 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 a build-up pressure test in the wellbore, a log-log plot of time-derivative pressure data with respect to time (P′);
determining, based on the P′ log-log 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.