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1. US20200208498 - POWER GENERATION USING PRESSURE DIFFERENTIAL BETWEEN A TUBULAR AND A BOREHOLE ANNULUS

Office
United States of America
Application Number 16234936
Application Date 28.12.2018
Publication Number 20200208498
Publication Date 02.07.2020
Publication Kind A1
IPC
E21B 41/00
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
41Equipment or details not covered by groups E21B15/-E21B40/95
E21B 34/10
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
34Valve arrangements for boreholes or wells
06in wells
10operated by control fluid supplied from outside the borehole
H02K 35/02
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
35Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
02with moving magnets and stationary coil systems
CPC
H02K 35/02
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
35Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
02with moving magnets and stationary coil systems
E21B 41/0085
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
41Equipment or details not covered by groups E21B15/00 - E21B40/00
0085Adaptations of electric power generating means for use in boreholes
E21B 34/10
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
34Valve arrangements for boreholes or wells
06in wells
10operated by control fluid supplied from outside the borehole
Applicants Andrew Duggan
Baker Hughes, a GE company, LLC
Christopher Ryan Hern
Daniel Ewing
Inventors Andrew Duggan
Christopher Ryan Hern
Daniel Ewing
Title
(EN) POWER GENERATION USING PRESSURE DIFFERENTIAL BETWEEN A TUBULAR AND A BOREHOLE ANNULUS
Abstract
(EN)

An apparatus for generating power includes a fluid chamber configured to receive borehole fluid, one or more conductive coils surrounding the fluid chamber, a reciprocating magnetic shuttle disposed in the fluid chamber and dividing the fluid chamber into a first volume and a second volume, a first conduit connected to the first volume, and a second conduit connected to the second volume, the first conduit and the second conduit extending from a tubular conduit to an annulus. The apparatus includes a switching assembly configured to alternate between a first operating state where the first volume is in fluid communication with the annulus and a second operating state where the first volume is in fluid communication with the tubular conduit, to alternate a direction of differential pressure between the first volume and the second volume and cause the magnetic shuttle to move in a reciprocating motion and generate an electric current.

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