Power plants – Utilizing natural heat – Geothermal
Reexamination Certificate
2002-07-08
2004-03-16
Nguyen, Hoang (Department: 3748)
Power plants
Utilizing natural heat
Geothermal
C290S00100C, C290S04000F
Reexamination Certificate
active
06705085
ABSTRACT:
FIELD OF THE INVENTION
1. Background of the Invention
The present invention relates to a power generator for use in a wellbore formed in an earth formation. The purpose of such power generator is, for example, to provide electric power to electrical wellbore equipment, to charge a battery for powering such equipment, or to create an electric charge or discharge in or around the wellbore. However, application of a conventional power generator in a wellbores is impractical or impossible in view of the relatively small diameter of the wellbore, particularly in the deeper sections of the wellbore. Furthermore, the installation of temporary power cables in a wellbore is difficult and expensive.
It is an object of the invention to provide a suitable power generator for use in a wellbore formed in an earth formation.
In accordance with the invention there is provided a power generator for use in a wellbore formed in an earth formation, comprising an internal combustion engine having a cylinder and a piston defining a combustion chamber in the cylinder, the engine being arranged to induce a reciprocating movement to the piston relative to the cylinder upon combustion of a combustible gas mixture in the combustion chamber, and a linear electricity generator having a stator and a drive shaft, the generator being arranged to generate electricity upon a reciprocating movement of the drive shaft relative to the stator, wherein the piston is connected to the drive shaft so as to transmit said reciprocating movement of the piston to the drive shaft.
SUMMARY OF THE INVENTION
The power generator can have a relatively small diameter so that the generator fits in the wellbore, by virtue of the movement of the piston and the drive shaft being a reciprocating movement.
REFERENCES:
patent: 4805407 (1989-02-01), Buchanan
patent: 5202194 (1993-04-01), VanBerg
patent: 5788003 (1998-08-01), Spiers
patent: 5893343 (1999-04-01), Rigazzi
patent: 6181110 (2001-01-01), Lampis
patent: 6376925 (2002-04-01), Galich
patent: 0 500 303 (1992-08-01), None
patent: 0 909 008 (1999-04-01), None
Braithwaite Stephen Richard
Heijnen Wilhelmus Hubertus Paulus Maria
LandOfFree
Downhole electric power generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Downhole electric power generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downhole electric power generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3267673