US 12,297,823 B2
Electrical submersible pump control
Albert Hoefel, Sugar Land, TX (US); Gocha Chochua, Katy, TX (US); Yves-Marie Clet Robert Subervie, Houston, TX (US); and Jonathan Wun Shiung Chong, Calgary (CA)
Assigned to Sensia LLC, Houston, TX (US)
Filed by Sensia LLC, Houston, TX (US)
Filed on Jan. 19, 2024, as Appl. No. 18/418,005.
Application 18/418,005 is a continuation of application No. 17/292,376, granted, now 11,913,444, previously published as PCT/US2019/060224, filed on Nov. 7, 2019.
Claims priority of provisional application 62/757,523, filed on Nov. 8, 2018.
Prior Publication US 2024/0159232 A1, May 16, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F04B 47/00 (2006.01); E21B 43/12 (2006.01); E21B 47/008 (2012.01); F04B 49/06 (2006.01); F04B 49/20 (2006.01); F04D 13/10 (2006.01); F04D 15/00 (2006.01); H02K 5/132 (2006.01); H02K 11/21 (2016.01); H02P 23/14 (2006.01); H02P 29/64 (2016.01); F04B 17/03 (2006.01)
CPC F04B 47/00 (2013.01) [E21B 43/128 (2013.01); E21B 47/008 (2020.05); F04B 49/065 (2013.01); F04B 49/20 (2013.01); F04D 13/10 (2013.01); F04D 15/0066 (2013.01); H02K 5/132 (2013.01); H02K 11/21 (2016.01); H02P 23/14 (2013.01); H02P 29/64 (2016.02); F04B 17/03 (2013.01); F04B 2203/0201 (2013.01); F04B 2203/0202 (2013.01); F04B 2203/0204 (2013.01); F04B 2203/0205 (2013.01); F04B 2203/0207 (2013.01); F04B 2203/0209 (2013.01); F04B 2205/00 (2013.01); H02P 2203/09 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electrical submersible pump system for an electrical submersible pump (ESP) comprising an electric motor, the electrical submersible pump system comprising:
drive circuitry configured to be electrically coupled to the ESP and configured to provide an electrical signal to power the ESP;
a current sensor configured to sense current of the electrical signal;
a voltage sensor configured to sense a voltage of the electrical signal; and
a processing circuit configured to:
calculate speed of a shaft of the electric motor based on a frequency induced by rotation of the electric motor detected in the current;
calculate a density of a fluid in the ESP based on the speed;
determine a torque in the ESP based on the current of the electrical signal, a measured voltage of the electrical signal, a resistance of a conductor that electrically couples the ESP to the drive circuitry, and a resistance of a stator of the ESP; and
adjust the speed of the electric motor based on at least one of the speed of the shaft, the density of the fluid, the torque in the ESP, or a flow rate of the fluid in the ESP.