E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 4/02 (2006.01)
Patent
CA 2729161
A generator (10) is provided for positioning downhole in a drill string (12) to generate power powering one or more downhole tools (16, 18). The generator includes a progressive cavity housing (28) and a progressive cavity rotor (13) which rotates in response to fluid passing through the progressive cavity housing. A restriction (36) in the annulus downstream from the ports controls the fluid flow in the annulus and past the restriction, and thereby the fluid flow through the progressive cavity housing. The generator may provide either hy- draulic or electrical power, or both, powering the one or more tools.
La présente invention concerne un générateur (10) pour positionnement en fond de trou dans un train de tiges de forage (12) pour générer de lélectricité alimentant un ou plusieurs outils en fond de trous (16, 18). Le générateur comprend un logement de cavité progressive (28) et un rotor de cavité progressive (13) qui tournent en réponse au passage dun fluide à travers le logement de cavité progressive. Une restriction (36) dans lanneau en aval des orifices régule lécoulement de fluide dans lanneau et au-delà de la restriction, et ainsi l'écoulement de fluide à travers le logement de cavité progressive. Le générateur peut fournir de lénergie soit hydraulique soit électrique, ou les deux, alimentant le ou les outils.
Finlayson & Singlehurst
Robbins & Myers Energy Systems L.p.
LandOfFree
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