Automatic calibration for a water injection network model

A method for calibrating a water injection network model, the method comprising:

• obtaining, via a plurality of devices, initial measurements for a plurality of injection wells that are included in an injection pipeline network, initial measurements comprise pressure and temperature data,
• wherein the plurality of devices are disposed at the wellhead and along a pipeline in the injection pipeline network;
• obtaining, via at least two flow meters disposed downstream from a plurality of pumps fed from a water treatment facility, a first total injection rate of fluids being pumped;
• determining, using a computer processor, an injection rate reconciliation for the plurality of injection wells in the injection pipeline network based on a comparison of the measurements and the total injection rate;
• dividing, using initial measurements, the injection pipeline network into a plurality of main-loops;
• subdividing, using measurements, the plurality of main-loops into a plurality of sub-loops;
• determining, using the computer processor, a friction factor multiplier to match a simulated pressure drop in each of the plurality of sub-loops to a measured pressure drop at the wellhead;
• calibrating, using the computer processor, the water injection network model using the friction factor multiplier to determine an optimum injection strategy for the injection pipeline network;
• and
• pumping, via the plurality of pumps, fluids through the plurality of injection wells to obtain new measurements using the plurality of devices and a new total injection rate via the at least two flow meters;
• while pumping, continuously calibrating the water injection network model, based on the obtained new measurements and the second total injection rate, by automatically updating initial measurements and the first total injection rate with the water injection network model across the injection pipeline network over a period of time;
• and
• recalculating a new optimum injection strategy based on the continuous calibrated water injection network model.