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RU1774988C
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Method of eliminating inter-shaft pressure in well
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Sampler for formation tester
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SU1755860A1
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Arrangement for breaking intermediate emulsion layer
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RU1790671C
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Method for periodic flowing well operation
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RU1794181C
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Method for thermochemical treatment of oil-bearing bed
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SU1790662A3
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Method for cleaning bottom hole zone from mechanical impurities
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SU1761942A1
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Inter seams gas transferring device
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SU1771480A3
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Method for treatment of water-based drilling mud
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RU1772738C
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Method of determining hydrogen sulfide in gas
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SU1702067A1
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Method for closing pipeline interior
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Method for development of well
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RU1773295C
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Acoustic nozzle
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Method for determination hydrogen sulfide and mercaptans in oil
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Method for breakdown of water-oil emulsion
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RU1782268C
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Drilling machine
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Method of locating oil, gas and water-bearing formations and relevant device
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Well pump installation
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SU1722524A1
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Settling plant
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SU1732100A1
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Periodical action valve
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