| 摘要 |
T 8502 ELECTRICAL SUBMERSIBLE PUMP FOR LIFTING HEAVY OILS An electrical submersible pump for producing viscous crude oil from a producing wellbore comprising a pump section (2) having a pump inlet (3), a motor section (7) provided with a motor for driving the pump, a shroud (4) surrounding the pump inlet (3) and the motor section (7), a water conduit (5) for conducting water from the surface to the shroud inlet (10), and means (13, 12, 8 and 9) to direct a portion of the water from the conduit to an annular flow path adjacent the motor section (7). (Figure 1) VM4/T8502FF
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