SYSTEM FOR RECOVERY OF FLUID MEDIUM MAINLY OIL AND WATER, FROM DEEP UNDERWATER FIELDS Russian patent published in 2000 - IPC

FIELD: recovery of oil and waster from deep underwater fields. SUBSTANCE: proposed system includes highly productive pump, such as highly productive centrifugal pump submerged in field, casing string running to field from surface, power supply source creating the rotary motion and step-up reduction gear which is used for connection of power supply source and pump inside casing string. Reduction gear includes toothed pair and column of connecting members which interconnects power supply source and reduction gear for imparting rotary motion to reduction gear. Pump is connected to reduction gear for imparting high-speed rotation energy to pump. EFFECT: increased recovery of fluid medium with no increase of expenses; ease of servicing. 7 cl, 7 dwg