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RU1810458C
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Device for reaming wells
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Sealing grease for threaded joints
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Drilling pipe cap
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Deflecting tool
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Emulsified drilling fluid
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Composition of flushing fluid
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Device for injecting gas-liquid system to borehole
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Drill pipe joint
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Method of determining the outburst-hazardous zones of coal seams
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Plugging arrangement for isolating trouble zones in wells packed with plugging systems
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Drilling tool
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Clayless flushing fluid
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Reagent for treating clayey drilling fluid
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Drill pipe cap
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Elevator
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Indicator of crooking direction of inclined wells
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Method of coal preparation with increased content of water-soluble salts
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Clayless flushing fluid
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Modified reagent for treating drilling muds "mgr-2"
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