US 12,116,885 B2
Methods of monitoring water injection in subterranean formations
Abdulrahim Khalid Al Mulhim, Hofuf (SA); and Ibrahim Mohamed El-Zefzafy, Udhailiyah (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Dec. 13, 2022, as Appl. No. 18/065,518.
Prior Publication US 2024/0191617 A1, Jun. 13, 2024
Int. Cl. E21B 47/107 (2012.01); E21B 43/25 (2006.01); E21B 47/06 (2012.01); G01V 1/30 (2006.01)
CPC E21B 47/107 (2020.05) [E21B 43/25 (2013.01); E21B 47/06 (2013.01); G01V 1/308 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising:
receiving a plurality of signals from a sensor deployed in a subterranean formation;
performing a step-rate analysis for the subterranean formation using the plurality of signals;
determining an ideal volumetric flow rate and an ideal pressure of water injected into the subterranean formation by a power water injector from the step-rate analysis;
continuously determining a cumulative volume of water and a cumulative pressure of water injected into the subterranean formation to obtain a plurality of cumulative injected water data points and a plurality of cumulative pressure data points;
performing a Hall plot analysis of the plurality of cumulative injected water data points and the plurality of cumulative pressure data points; and
performing a mitigation action when a deviation from steady state within the Hall plot analysis is beyond a constant factor, wherein the mitigation action reduces the deviation from steady state.