Real time optimization of power in electrical submersible pump variable speed applications
OwnerRoman Valeryevich Molotkov, Gregory Brock Stephensoninventors
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Abstract
A method and apparatus for real-time monitoring of a variable frequency drive (VFD) controlling an electric submersible pump (ESP) and for fine-tuning operation of a VFD-ESP system such that oil production, power, and motor run life are optimized.
Claims21
A method of adjusting one or more operating parameters of a variable frequency drive (VFD) coupled to an electric submersible pump (ESP) in real time, comprising:
- (a) collecting data associated with the VFD and the ESP while operating the ESP;
- (b) analyzing the collected data in real time to determine if the one or more operating parameters can be adjusted to achieve a desired operating state;
- and
- (c) in response to determining that the operating parameters can be adjusted to achieve the desired operating state, adjusting the one or more operating parameters of the VFD.
An apparatus for monitoring and adjusting one or more operating parameters of a variable frequency drive (VFD) coupled to an electric submersible pump (ESP) in real time, comprising:
- a waveform capture device electrically coupled to the VFD for determining data associated with the VFD and the ESP while operating the ESP, comprising:
- one or more input voltage or current meters coupled to one or more VFD inputs;
- and
- one or more output voltage or current meters coupled to one or more VFD outputs;
- and
- a computing device coupled to the waveform capture device and configured to analyze the data determined by the waveform capture device in real time to determine if the one or more operating parameters can be adjusted to achieve a desired operating state and to adjust the one or more operating parameters of the VFD if the operating parameters can be adjusted.
A system, comprising:
- a variable frequency drive (VFD);
- an electric submersible pump (ESP) coupled to the VFD;
- a waveform capture device electrically coupled to the VFD for determining data associated with the VFD and the ESP while operating the ESP, comprising:
- one or more input voltage or current meters coupled to one or more VFD inputs;
- and
- one or more output voltage or current meters coupled to one or more VFD outputs;
- and
- a computing device coupled to the waveform capture device and configured to analyze the data determined by the waveform capture device in real time to determine if the one or more operating parameters can be adjusted to achieve a desired operating state and to adjust the one or more operating parameters of the VFD if the operating parameters can be adjusted.
A computer-readable medium containing a program for adjusting one or more operating parameters of a variable frequency drive (VFD) coupled to an electric submersible pump (ESP) in real time, which, when executed by a processor, performs operations comprising:
- (a) collecting data associated with the VFD and the ESP while operating the ESP;
- (b) analyzing the collected data in real time to determine if the one or more operating parameters can be adjusted to achieve a desired operating state;
- and
- (c) in response to determining that the operating parameters can be adjusted to achieve the desired operating state, adjusting the one or more operating parameters of the VFD.
Dependencies are inferred from the claim text.