Methods and apparatus for harvesting potential energy downhole

Details Methods and apparatus for harvesting potential energy downhole Methods and apparatus for harvesting potential energy downhole

E - Fixed Constructions

21

B

E21B 41/00 (2006.01) E21B 47/00 (2006.01)

Patent

CA 2672079

Methods and apparatus for harvesting energy while moving a tool through a well are shown and described. The harvested energy can be used by the tool to perform work once it reaches an intended location in the well, or along the way. A considerable amount of potential energy is typically lost by oilfield tools as they move down through a borehole. Methods and apparatus described herein recover and/or store some of the energy during the downward movement of the tool.

Les procédés et appareils illustrés et décrits sont destinés à collecter de l'énergie tout en déplaçant un outil à travers un puits. L'énergie collectée peut être utilisée par l'outil pour exécuter un travail une fois qu'il a atteint un emplacement ciblé dans le puits, ou le long du chemin. Une quantité considérable d'énergie potentielle est habituellement perdue par les outils de champ pétrolifère à mesure qu'ils descendent à travers un forage. Les procédés et appareil décrits ici récupèrent et/ou stockent une certaine quantité de l'énergie pendant le déplacement vers le bas de l'outil.

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