FIELD: oil and gas production.
SUBSTANCE: clay-less polysaccharide drilling agent for drilling horizontal wells contains wt %: bio-polymer KK Robus 0.15-0.25; carboxymethyloxypropylcellulose or hydroxyethylcellulose 0.35-0.40; complex reagent KSD 0.50-1.50; de-foaming agent SOFEXYL-4248P 0.10-0.20; water 97.60-98.90; carbonate weighting additive 26.00-37.00 (over 100 %).
EFFECT: raised efficiency of polymers in clay-less polysaccharide drilling agent by means of its increased resistance to mechanical destruction.
3 tbl, 1 dwg
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