FIELD: oil recovery. SUBSTANCE: pump includes housing on frame above wellhead inside which hollow drive shaft of sucker-rod string is suspended in bearing supports; this shaft is rotated by two more motors evenly located around it which are also suspended in housing and connected with drive shaft through reduction gear. Reduction gear includes gear wheel secured on hollow drive shaft and gears fitted on output shafts of motors and thrown into engagement with this gear wheel. Reduction is provided with overrunning clutch. EFFECT: enhanced reliability. 2 cl, 4 dwg
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