Systems and methods for downhole power factor correction

Patent metadata

Field	Value
Publication number	US-8937448-B2
Application number	US-201113300900-A
Country	US
Kind code	B2
Filing date	Nov 21, 2011
Priority date	Nov 21, 2011
Publication date	Jan 20, 2015
Grant date	Jan 20, 2015

Abstract

Systems and methods for processing power provided to downhole electrical systems such as electric submersible pump motors to increase the power factor of the supplied power. In one embodiment, a system comprises a downhole motor and a power factor corrector. The motor may be coupled to drive an electric submersible pump. The power factor corrector is configured to receive input power, process the received input power using one or more capacitive electrical components and thereby impart a capacitive phase shift between the voltage and the current of the received input power. The processed output power is provided to the downhole motor, which consumes the processed output power with a power factor which is greater than it would have been in the absence of the correction.

First claim

What is claimed is:

1. A system comprising:
an electric drive positioned at the surface of a well, wherein the electric drive outputs a first power signal
a downhole motor;
a power factor corrector coupled to the downhole motor;
a power cable coupled between the electric drive and the power factor corrector, wherein the power cable carries the first power signal from the electric drive to the power factor corrector, imparts an inductive phase shift to the first power signal,…

Assignees

• Allen Robert D
• Carter William J
• Campbell Dustin B
• Knapp John M
• Baker Hughes Inc

Inventors

• Allen Robert D
• Carter William J
• Campbell Dustin B
• Knapp John M

Classifications

• E21B43/128 Primary

  Fixed Constructions · mapped topic

• H02P23/0081

  Electricity · mapped topic

• Y02P80/10

  Cross-Sectional Technologies · mapped topic

• H02P23/26

  Electricity · mapped topic