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1. (WO2018125093) SYSTEMS AND METHODS TO GENERATE POWER IN A DOWNHOLE ENVIRONMENT

Pub. No.:    WO/2018/125093    International Application No.:    PCT/US2016/068939
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Thu Dec 29 00:59:59 CET 2016
IPC: E21B 41/00
H02N 11/00
H01L 35/30
Applicants: HALLIBURTON ENERGY SERVICES, INC.
Inventors: FROSELL, Thomas Jules
FRIPP, Michael Linley
Title: SYSTEMS AND METHODS TO GENERATE POWER IN A DOWNHOLE ENVIRONMENT
Abstract:
The disclosed embodiments include systems and methods to generate electrical power in a downhole environment. In one embodiment, the system includes a thermoelectric generator operable to convert a temperature gradient across a section of the thermoelectric generator into electrical energy and deployed in a wellbore. The system also includes a pressure control device positioned proximate the thermoelectric generator and having a fluid flow path for a fluid flowing through the pressure control device and across the thermoelectric generator such that an absolute pressure of the fluid decreases when the fluid flow out of the pressure control device and across the thermoelectric generator. A temperature of the fluid changes as the fluid flows out of the thermoelectric generator and across the thermoelectric generator due to a change in the absolute pressure of the fluid. The temperature gradient across the thermoelectric generator is due to change in the temperature of the fluid.