E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 4/02 (2006.01) F03C 2/08 (2006.01)
Patent
CA 2744549
The present invention relates to systems and methods for controlling downhole motors. One aspect of the invention provides a valve-controlled downhole motor (202) including: a downhole motor and a spool valve (204). The downhole motor includes a sealed chamber having a first port (220) and a second port (228), a stator (210) received within the sealed chamber, and a rotor received within the stator. The spool valve includes a barrel and a spool (238) received within the barrel. The barrel includes an inlet port (226), an exhaust port, a first feed port (230), a second feed port (232), a first return port (234), and a second return port (236). The inlet port is located in proximity to the first feed port and second port. The exhaust port is located in proximity to the first return port and the second return port. The spool includes a first gland (240) and a second gland (242).
L'invention concerne des systèmes et des procédés permettant de commander des moteurs de forage. Un aspect de l'invention concerne un moteur de forage à commande par soupapes comportant: un moteur de forage et un distributeur à tiroir. Le moteur de forage comporte une chambre étanche ayant un premier orifice et un second orifice, un stator logé à l'intérieur de la chambre étanche, et un rotor logé à l'intérieur du stator. Le distributeur à tiroir comporte un corps et une bobine logée à l'intérieur dudit corps. Le corps comporte un orifice d'entrée, un orifice de sortie, un premier orifice d'alimentation, un second orifice d'alimentation, un premier orifice de retour, et un second orifice de retour. L'orifice d'entrée est situé à proximité du premier orifice d'alimentation et du second orifice. L'orifice de sortie est situé à proximité du premier orifice de retour et du second orifice de retour. La bobine comporte un premier fouloir et un second fouloir.
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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