RU94040931A
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Method of reagent for drilling mud production
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RU1799896C
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Method of reagent making for mineralized drilling fluid
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RU1832149C
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Plugging liquid
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SU1757997A1
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Method of producing acidic solution for bore-hole treatment
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SU1721070A1
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Method of producing polymer drilling mud for seam opening
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SU1728471A1
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Method for preparation of light-weight oil-well slurry
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SU1665293A1
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Method of determining elastic anisotropy of materials
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SU1730431A1
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Oil-well slurry
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SU1740653A1
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Method of oil and gas reservoir modelling
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SU1740609A1
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Drilling bit
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SU1722559A1
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Activator
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SU1666507A1
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Method for preparing reagent for clay-free mineralized drilling fluid based on cellulose carboxylate
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SU1476363A1
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Method and apparatus for studying organic substances
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SU1520235A1
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Method of preparing plugging cementing composition
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SU1472645A1
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Method of preparing well to cementing
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SU1461899A1
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Sampler
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SU1528896A1
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Packer
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SU1439229A1
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Sampler
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SU1402995A2
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Electic survey station
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SU1716114A1
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Downhole gripping device
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