SU1767623A1
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Device for hydraulic protection of immersible oil filled electric motor
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RU1788555C
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Compensator for hydraulic protection of submersible oil-filled motor
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Downhole valve
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SU1740634A1
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Method for control of submersible-motor downhole pump
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Dipped electric motor
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SU1713006A1
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Cable attachment fitting to pipe-line located in well
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Vibrating unit
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Device for roundtripping lengthy items
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RU1770609C
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Vortex machine
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Vortex machine
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Deep-pumping installation
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Method of control of multisectional electric motor of well pumping unit and well pumping unit
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Method of operating unit of submersible pump in borehole
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Submerged piston multistage electric pump unit
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SU1508012A1
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Impeller for centrifugal pump
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SU1521918A1
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Fig for testing gas separators
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Device for attaching cable to pipeline arranged in well
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SU1614073A1
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Deep-well submersible electric pumping unit
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Deep-well piston-type hydraulic motor
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SU1460414A1
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Hydraulic piston pumping unit with closed circulation of working fluid
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