FIELD: oil and gas industry.
SUBSTANCE: group of inventions relates to oil and gas industry and can be used for drilling and repair of wells, including for opening of productive formations in complex mining and geological conditions: in sections folded by unstable clay rocks, high-permeable terrigenous rocks, and can be used to block flow of process fluid filtrate into terrigenous rocks. According to the first version, the adhesive mud additive for drilling mud contains the following in wt%: polydadmac 15–45; hydrophilic microclimate 10–30; water – balance. In compliance with the second version, the adhesive mud additive for drilling fluid contains, wt%: polydadmac 15–45; hydrophobic microclimate 10–30; water – balance.
EFFECT: higher colmatation efficiency.
4 cl, 2 dwg
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