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Aluminium-base alloy
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Pumping unit
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Arrangement for sampling oil at well mouth
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Device for gas-lift operation of well
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Jet pump
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Inertia accumulator
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Method of locating the head of offshore well and restoring its communication with floating rig
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Valve device
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Arrangement for blowing and cleaning pipeline
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Method of sustaining formations pressure in oil reservoir
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Method of laying pipeline at sea bottom by free submerging
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Drum for a float transporting of wound pipeline /cable/ and laying it
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Apparatus for self-indexing a deflector in inclined borehole
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Apparatus for driving-down offshore water-separating column
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