Automatic calibration for a water injection network model

1 . 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.

2 . The method of claim 1 , wherein the total injection rate is further matched with water volume rate measurements from the water treatment facility feeding the plurality of pumps.

3 . The method of claim 1 , wherein dividing, using measurements, the injection pipeline network into the plurality of main-loops further comprises selecting at least two pipelines from the injection pipeline network that have a greatest diameter and a longest section in comparison to remaining pipelines in the injection pipeline network.

4 . The method of claim 1 , wherein subdividing, using measurements, the plurality of main-loops into the plurality of sub-loops further comprises defining a path between a node on one of the plurality of main-loops to each of the plurality of injection wells.

5 . The method of claim 4 , wherein subdividing, using measurements, the plurality of main-loops into the plurality of sub-loops further comprises excluding any one of the plurality of injection wells from the plurality of sub-loops which does not have measurements available at the wellhead.

6 . The method of claim 1 , wherein determining, using the computer processor, the friction factor multiplier to match a simulated pressure drop further comprises determining the simulated pressure drop by using a network flow simulator.