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US 11,898,418 B2Granted
Prevention of ferromagnetic solids deposition on electrical submersible pumps (ESPs) by magnetic means
AssigneeSaudi Arabian Oil Company
InventorsMohannad Abdelaziz, Rafael Adolfo Lastra Melo
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Abstract
A system is provided for use with an electrical submersible pump (ESP). The system includes an ESP mounted on a tubing and a magnetic field source positioned above the ESP. The magnetic field source generates a magnetic field configured to suspend iron-containing particles above a discharge of the ESP. The magnetic field prevents an accumulation of the iron-containing particles onto components of the ESP during a powered-off state of the ESP.
Claims6
A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:
- in a tubing positioned in a wellbore with an electrical submersible pump (ESP) and a magnetic field source mounted on the tubing, the magnetic field source positioned above the electrical submersible pump (ESP) and configured to generate a magnetic field to suspend iron-containing particles above a discharge of the electrical submersible pump (ESP):
- activating the magnetic field, preventing an accumulation of the iron-containing particles onto components of the electrical submersible pump (ESP) during a powered-off state of the electrical submersible pump (ESP);
- suspending, using the magnetic field source positioned above the electrical submersible pump (ESP), the iron-containing particles until the electrical submersible pump (ESP) resumes production to flow the iron-containing particles out of the wellbore;
- and
- switching, by a controller, between powering the electrical submersible pump (ESP) and powering the magnetic field source, including powering a selected one of the electrical submersible pump (ESP) and the magnetic field source.
2 more elements
Dependencies are inferred from the claim text.