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Optimized cooling for electric motors in artificial lifting

A technology for electric motors, cooling systems, applied to components of pumping devices for elastic fluids, machines/engines, liquid fuel engines, etc., can solve problems such as reducing cooling effect

Inactive Publication Date: 2019-03-29
GE OIL & GAS ESP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In marginal wells or wells with large gas fractions, lack of sufficient volume of liquid will reduce the cooling effect provided by shrouded solutions

Method used

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  • Optimized cooling for electric motors in artificial lifting
  • Optimized cooling for electric motors in artificial lifting
  • Optimized cooling for electric motors in artificial lifting

Examples

Experimental program
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Embodiment Construction

[0017] According to a preferred embodiment of the present invention, figure 1 An elevational view of pumping system 100 attached to production tubing 102 is shown. The pumping system 100 and production tubing 102 are disposed in a tubular wellbore 104 drilled for production of a fluid such as water or oil. As used herein, the term "petroleum" broadly refers to all mineral hydrocarbons, such as crude oils, gases, and combinations of oils and gases. Production tubing 102 connects pumping system 100 to wellhead 106 located at the surface.

[0018] Pumping system 100 preferably includes production pump 108 , motor 110 , seal section 112 , gas separator 114 , heat exchanger 116 and oil circulation pump 118 . In a preferred embodiment, the motor assembly 110 is an electric motor that receives its power via a power cable 120 from a ground-based power source. Motor assembly 110 converts electrical energy into mechanical energy, which is transmitted by one or more shafts 122 to prod...

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PUM

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Abstract

An electric submersible pumping system includes a motor, a production pump driven by the motor, a heat exchanger and an oil circulation pump connected to the motor. The production pump moves fluids from the wellbore through the heat exchanger. The oil circulation pump circulates oil between the motor and the heat exchanger to moderate the operating temperature of the motor. Heat absorbed by the oil moving through the motor is transferred to the produced fluid moving through the heat exchanger.

Description

technical field [0001] The present invention relates generally to the field of submersible pumping systems, and more particularly, but not by way of limitation, to submersible pumping systems including motor cooling systems. Background technique [0002] Submersible pumping systems are often deployed into wells to recover petroleum fluids from subterranean reservoirs. A typical submersible pumping system includes a number of components including one or more fluid-filled electric motors coupled to one or more high performance pumps located above the motors. When energized, the motor provides torque to the pump, which pushes wellbore fluid through the production tubing to the surface. Each of the components in a submersible pumping system must be designed to withstand the harsh downhole environment. [0003] Most wells include well tubing that runs along the inside of the wellbore to maintain the structural integrity of the wellbore and to isolate the introduction of fluids ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D13/06F04D13/08
CPCF04D13/10F04D13/04F04D13/046F04D29/5806
Inventor C.E.迪亚斯R.A.奥亚尊R.H.特夫斯C.科林斯
Owner GE OIL & GAS ESP