Systems and Methods for Pump Control Based on Non-Linear Model Predictive Controls

One or more tangible, non-transitory, machine-readable media comprising instructions to:

• perform downhole fluid analysis using a downhole acquisition tool positioned in a wellbore in a geological formation to determine a plurality of fluid properties associated with a reservoir fluid contained in the geological formation, the wellbore, or both;
• generate a nonlinear predictive control model representative of the plurality of fluid properties based at least in part on the downhole fluid analysis;
• and
• adjust the nonlinear predictive control model based at least in part on an output representative of a pump flow control sequence at a first time interval and the plurality of fluid properties.

A downhole fluid testing system, comprising:

• a downhole acquisition tool housing configured to be moved into a wellbore in a geological formation, wherein the wellbore or the geological formation, or both, contain fluid that comprises a native reservoir fluid of the geological formation and a contaminant;
• a pump configured to pump fluid through a flow line through the downhole acquisition tool;
• an optical spectrometer comprising at least one sensor disposed in the downhole acquisition tool housing, wherein the optical spectrometer is configured to receive a first plurality of measurements output by the at least one sensor and to analyze portions of the fluid to obtain a fluid property of the fluid, wherein the fluid property includes an optical density;
• and
• a controller comprising memory circuitry and processing circuitry, wherein the controller is communicatively coupled downhole to the housing, and wherein the controller is configured to:
• receive the first plurality of measurements over time from the at least one sensor;
• perform downhole fluid analysis using a downhole acquisition tool in the wellbore to determine a plurality of fluid properties associated with the reservoir fluid;
• execute a nonlinear predictive control model based at least in part on the downhole fluid analysis by utilizing the plurality of fluid properties;
• and
• adjust the nonlinear predictive control model based at least in part on an output representative of a pump flow control sequence at a first time interval and the plurality of fluid properties.