RU1770349C
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Method of oil dehydation
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SU1749446A1
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Well filter
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SU1705409A1
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Method of protecting low-carbon steel against carbon dioxide corrosion
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SU1754888A1
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Additive to water for driving paraffin crude from oil pool
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SU1740400A1
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Process for demulsification of oil
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SU1760078A1
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Junk basket
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SU1668376A1
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Drilling mud
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SU1652511A1
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Grouting mortar
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SU1555225A1
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Petroleum preparation device
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SU1542948A1
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Drilling mud
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SU1546613A1
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Buffer fluid
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SU1500658A1
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Drilling mud
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SU1484824A1
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Emulsion-type drilling fluid
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SU1390192A1
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Method of purifying waste water of suspended matter
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SU1467074A1
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Composition for preventing salt deposition in oilfield equipment
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SU1407931A1
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Method of producing reagent for treatment of drilling fluids
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SU1375792A1
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Method of releasing pipes seized in well
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SU1406140A1
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Drilling fluid
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SU1286740A1
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Method of removing liquid from gas well bottom
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SU1305300A1
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Method of preparing asbestos drilling mud and cleaning same from cuttings
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