Choke controller, system, and method using adaptive proportional gain to control choke based on pressure setpoint

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United States of America

PATENT NO 12173733
APP PUB NO 20230279878A1
SERIAL NO

18298219

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Abstract

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A controller and related system and method for controlling a choke for choking fluid flow are configured to take into account non-linear behaviors of the choke, to allow more accurate and effective control of the choke. To obtain a desired pressure drop across a choke valve, the controller is configured to monitor the position of a choke actuator coupled to the choke valve and the pressure at the inlet of the choke valve. The controller calculates an adaptive proportional gain coefficient, and optionally adaptive integral and derivative coefficients, based on the choke actuator position, to help mitigate the effects of non-linear behaviors of the choke and, where necessary, based on the inlet pressure, the controller calculates an augmentation correction to address any instability in the choke. The controller then commands the choke actuator accordingly to adjust the flow area through the choke valve.

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Patent Owner(s)

Patent OwnerAddress
OPLA ENERGY LTD736 - 8TH AVE SW SUITE 650 CALGARY T2P 1H4

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Afshari, Saied Calgary, CA 3 1
Khorshidian, Hossein Calgary, CA 9 4
Lowe, Skyler Calgary, CA 2 0

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