Determining a condition of an electric submersible pump using orthogonal accelerometers
AssigneeHalliburton Energy Services, Inc.
InventorsMichael Rimmer, John George Nassif Badawi
Life of this patent
Estimating the term…
Abstract
A method of determining a condition of an electric submersible pump (ESP) includes gathering acceleration data from a first accelerometer and a second accelerometer. The first accelerometer and the second accelerometer are affixed to the ESP. The first accelerometer is oriented orthogonally with respect to the second accelerometer. The method further includes obtaining orbit data from the acceleration data, determining a magnitude and/or phase angle of a harmonic of a rotational frequency of a motor of the ESP based on the orbit data, and determining a condition of the ESP based on the magnitude and/or phase angle of the harmonic.
Claims24
A processor-implemented method of determining a condition of an electric submersible pump (ESP), comprising:
- gathering acceleration data from a first accelerometer and a second accelerometer, wherein the first accelerometer and the second accelerometer are affixed to the ESP, and wherein the first accelerometer is oriented orthogonally with respect to the second accelerometer;
- obtaining orbit data from the acceleration data;
- determining a magnitude of a harmonic based on the orbit data;
- and
- determining a condition of the ESP based on the magnitude of the harmonic,
- wherein a speed of a motor of the ESP is adjusted based on the determined condition.
An apparatus for determining a condition of an electric submersible pump (ESP), comprising:
- one or more processors configured to:
- gather acceleration data from a first accelerometer and a second accelerometer, wherein the first accelerometer and the second accelerometer are affixed to the ESP, and wherein the first accelerometer is oriented orthogonally with respect to the second accelerometer;
- obtain orbit data from the acceleration data;
- determine a magnitude of a harmonic based on the orbit data;
- and
- determine a condition of the ESP based on the magnitude of the harmonic, wherein a speed of the ESP is adjusted based on the determined condition.
A system for lifting fluid in a wellbore, comprising:
- an impeller configured to lift fluid in a wellbore;
- a motor configured to drive the impeller;
- a first accelerometer mechanically coupled to the motor;
- a second accelerometer mechanically coupled to the motor and oriented orthogonally with respect to the first accelerometer;
- one or more processors configured to gather acceleration data from the first accelerometer and the second accelerometer, obtain orbit data from the accelerometer data, determine a magnitude of a harmonic of a rotational frequency of the motor based on the orbit data, and determine a condition of the system based on the magnitude of the harmonic;
- and
- a controller configured to control a speed of the motor based on the determined condition.
An electric submersible pump, comprising:
- an impeller configured to lift fluid in a wellbore;
- a motor configured to drive the impeller;
- a housing enclosing the impeller and the motor;
- pairs of accelerometers longitudinally distributed along the housing, wherein each of the pairs of accelerometers comprises a first accelerometer and a second accelerometer oriented orthogonally with respect to the first accelerometer;
- and
- one or more processors configured to gather acceleration data from the pairs of accelerometers, obtain orbit data from the accelerometer data, determine magnitudes of harmonics at respective locations of the pairs of accelerometers, and determine a condition of the electric submersible pump, using a machine learning algorithm, based on the magnitudes of harmonics,
- wherein an operation of the motor is altered based on the determined condition.
Dependencies are inferred from the claim text.