Downhole electrical power generator

H - Electricity – 02 – K

Patent

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Details

H02K 35/00 (2006.01) F03G 7/08 (2006.01) H02K 7/18 (2006.01)

Patent

CA 2596399

A downhole electric power generating system includes a flow restricting device (48) which variably restricts flow through an opening (40), the restricting device vibrating in response to flow through the opening and the restricting device thereby alternately increasing and decreasing flow through the opening; and an electricity generating device (54) which generates electricity in response to vibration of the restricting device. Another downhole electrical power generating system includes a flow-restricting device which vibrates in response to flow through an opening, the restricting device thereby alternately increasing and decreasing flow through the opening; a pressure differential across the restricting device variably biasing the restricting device to increasingly restrict flow through the opening.

L~invention concerne un système générateur de puissance électrique en fond de trou comprenant un dispositif limiteur d~écoulement (48) qui limite de façon variable un écoulement à travers une ouverture (40), le dispositif limiteur vibrant en réaction à un écoulement à travers l~ouverture et le dispositif limiteur augmentant et abaissant ainsi en alternance l~écoulement à travers l~ouverture ; et un dispositif générateur d~électricité (54) qui génère de l~électricité en réaction à la vibration du dispositif limiteur. Un autre système générateur de puissance électrique en fond de trou comporte un dispositif limiteur d~écoulement qui vibre en réaction à un écoulement à travers une ouverture, le dispositif limiteur augmentant et abaissant ainsi en alternance l~écoulement à travers l~ouverture, un différentiel de pression de part et d~autre du dispositif limiteur polarisant de manière variable le dispositif limiteur pour limiter progressivement l~écoulement à travers l~ouverture.

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