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RU2194349C1
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Device for hydraulic protection of submersible oil- filled electric motor
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RU2192700C1
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Submersible oil-filled motor
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RU2196253C1
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Centrifugal oil-well pump stage
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RU2191320C1
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Mechanism friction parts lubrication system oil feed transmitter
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RU2191307C1
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Sealing collar
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RU2197649C2
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Apparatus for feeding fluid medium under pressure
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RU2201533C2
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Stage of oil-well multistage pump
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RU2183769C1
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Submersible double screw electric pump
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RU2184300C1
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Pipe joint
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RU2197643C2
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Oil-well centrifugal sectional pump
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RU2196257C2
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Impeller of centrifugal multi-stage pump
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RU2196256C2
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Centrifugal multi-stage pump impeller
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RU2196255C2
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Centrifugal multi-stage pump impeller
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RU2193692C1
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Stage of oil well centrifugal pump
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RU2196252C2
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Stage of oil-well multi-stage centrifugal pump
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RU2192566C1
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Installation for feeding pressurized fluid
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RU2196254C2
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Centrifugal pump
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RU2192561C1
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Stage of submersible centrifugal pump
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RU2193653C2
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Gas separator of centrifugal pump for oil recovery from wells
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RU2192560C2
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Disperser of submersible centrifugal pumping unit
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