Pumps – Motor driven – Electric or magnetic motor
Patent
1980-07-16
1983-11-08
Cline, William R.
Pumps
Motor driven
Electric or magnetic motor
417299, 415501, 166325, 175242, F04B 1700
Patent
active
044139586
ABSTRACT:
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.
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Cline William R.
Kramer John M.
The British Petroleum Company Limited
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