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RU2730163C1
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Method for operation of oil well with bottom water
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RU2730157C1
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Method for sealing production string of production well
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RU2730158C1
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Repair method of production casing of producing well
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RU2730162C1
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Preventer for wells with two-row string
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RU2728178C1
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Method of constructing a side well shaft
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RU2730159C1
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Drilling bit at casing string
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RU2728396C1
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Device for cementing of casing strings in complicated conditions
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RU2730156C1
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Bypass controlled valve
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RU2728499C1
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Method of adjustment of axial clearance between rolling bearings and device for its implementation
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RU2728176C1
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Extraction method of hard-to-recover oil reserves
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RU2730137C1
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Device for controlled pumping of liquid into formation
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