DOWNHOLE POWER GENERATION

摘要

Downhole electrical power generation apparatus and methods using stored pressurised gas and/or ambient downhole pressure. One example apparatus comprises first and second fluid receiving chambers (21a, 21b), a fluid communication path (24a) for allowing flow of fluid from the first chamber (21a) via the fluid communication path (24a) to the second chamber (21b) and a turbine generator (26) disposed so that fluid flowing from the first chamber via the fluid communication path to the second chamber operates the turbine generator (26) to generate electrical power.