F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
103/109, 103/23
F04D 13/08 (2006.01) E21B 43/12 (2006.01) F04D 13/06 (2006.01) F04D 13/10 (2006.01)
Patent
CA 1142795
4807 ABSTRACT OF THE DISCLOSURE An electric pump assembly (1) for lifting fluids in wells comprises a plurality of electric pumps (20)and (24) located at axially spaced apart locations in the well each pump having an axial aperture (21) to permit wire line operations to be conducted in the well below the assembly (1). Adjacent pumps (20)and (24) can rotate in opposite directions about a common axis to effect torque balancing. Each pump (20) can have a transformer (50) to permit local adjustment of voltage and means (40) are provided for sequential operation of the pumps. Assembly can be supported on cable (12), (14) or on production tubing (60) assisted by packers.
356297
British Petroleum Company Limited (the)
Ridout & Maybee Llp
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