Downhole electric power generator
First Claim
1. A power generator for use in a wellbore formed in an earth formation, comprising an engine having a cylinder and a piston, the engine being arranged to induce a reciprocating movement to the piston relative to the cylinder, and a electricity generator having a stator and a drive shaft, the generator being arranged to generate electricity upon a 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, and the engine is an internal combustion engine wherein the piston and cylinder define a combustion chamber with a spring biasing the piston so as to compares a combustible gas mixture in the combustion chamber and the piston is induced to move relative to the cylinder upon combustion of the combustible gas mixture in the combustion chamber, and that the electricity generator is a linear generator which generates electricity upon a reciprocating movement of the drive shaft relative to the stator.
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Accused Products
Abstract
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.
49 Citations
7 Claims
- 1. A power generator for use in a wellbore formed in an earth formation, comprising an engine having a cylinder and a piston, the engine being arranged to induce a reciprocating movement to the piston relative to the cylinder, and a electricity generator having a stator and a drive shaft, the generator being arranged to generate electricity upon a 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, and the engine is an internal combustion engine wherein the piston and cylinder define a combustion chamber with a spring biasing the piston so as to compares a combustible gas mixture in the combustion chamber and the piston is induced to move relative to the cylinder upon combustion of the combustible gas mixture in the combustion chamber, and that the electricity generator is a linear generator which generates electricity upon a reciprocating movement of the drive shaft relative to the stator.
Specification