US 2025/0027500 A1 · METHODS RELATED TO STARTUP OF AN ELECTRIC SUBMERSIBLE PUMP

Abstract

A method of using an electric submersible pump startup using model-predictive control includes defining an objective of the control algorithm comprising an intake pressure to achieve by an end of the startup schedule. The method also includes translating the objective into a cost function that mathematically describes the objective to develop a model-based offline startup schedule based on startup operational parameters, constraints, and a physical model and entering the startup operational parameters, the constraints for the startup operational parameters, and the physical model into a processor. The method also includes simulating system responses with the processor. The method also includes determining one or more optimal control actions by optimizing the cost function. The method also includes controlling the electric submersible pump based on the optimal control actions determined.

Claims20

Dependent claims

A method of using an electric submersible pump startup using model-predictive control, the electric submersible pump having a processor, the method comprising the steps of:

(a) defining an objective of the control algorithm comprising an intake pressure to achieve by an end of the startup schedule;
(b) translating the objective into a cost function that mathematically describes the objective to develop a model-based offline startup schedule based on startup operational parameters, constraints, and a physical model and entering the startup operational parameters, the constraints for the startup operational parameters, and the physical model into a processor;
(c) simulating system responses with the processor;
(d) determining one or more optimal control actions by optimizing the cost function;
and
(e) controlling the electric submersible pump based on the optimal control actions determined.

3 more elements

A method of developing a model-based offline startup schedule for an electric submersible pump having a choke, the method comprising:

(a) defining startup operational parameters comprising a surface flow rate to achieve by an end of a startup schedule;
(b) setting constraints for the startup operational parameters to remain within, the constrains comprising at least one of a temperature threshold or a current threshold;
(c) defining a physical model based on a configuration of the electric submersible pump;
(d) entering the startup operational parameters, the constraints for the startup operational parameters, and the physical model into a processor to develop the model-based offline startup schedule based on the startup operational parameters to achieve by the end of the startup schedule;
(e) executing the model-based offline startup schedule for the electric submersible pump;
(f) monitoring one or more operational parameters regarding the startup operational parameters during the startup schedule;
and
(g) responsive to at least one of the one or more operational parameters exceeding a predetermined threshold, adjusting at least one of a pump speed of the electric submersible pump or a choke setting of the choke during the startup schedule, such that the startup operational parameters are achieved by the end of the startup schedule.

5 more elements

Dependencies are inferred from the claim text.

Methods related to startup of an electric submersible pump

Life of this patent

Methods related to startup of an electric submersible pump

Life of this patent

Abstract

Claims20