US 12,000,276 B2
System for automated real-time water injection well testing
Mohammed J. Alshakhs, Arawabi (SA); Said Rifat, Medina (SA); and Abiola Onikoyi, Khurais (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Jan. 14, 2022, as Appl. No. 17/648,075.
Prior Publication US 2023/0228188 A1, Jul. 20, 2023
Int. Cl. E21B 49/00 (2006.01); E21B 49/08 (2006.01); E21B 47/06 (2012.01)
CPC E21B 49/008 (2013.01) [E21B 49/087 (2013.01); E21B 47/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for an injection well having an injection wellhead, the method comprising:
installing a measurement device on the injection wellhead, wherein the measurement device is configured to measure a pressure of the injection well at the injection wellhead;
injecting a fluid into the injection well at a plurality of injection rates using a computer processor;
measuring an injection bottom hole pressure at each injection rate to determine a plurality of injection bottom hole pressures using the computer processor, wherein the injection bottom hole pressure at each injection rate is measured using a density of a fluid in the injection well, a depth of the injection well, a pressure loss due to friction, and the pressure of the injection well at the injection wellhead at each injection rate;
determining a relationship between the plurality of injection rates and the plurality of injection bottom hole pressures using the computer processor; and
determining an injectivity index of the injection well using the relationship and the computer processor.