| 摘要 |
FIELD: oil and gas industry. ^ SUBSTANCE: polymer-clay drilling fluid in permafrost and highly colloidal clay rocks includes the following, wt %: clay powder - 1.000-3.000, Robus KK biopolymer - 0.300-0.100, Na CMC (carboxymethyl cellulose) - 0.200-0.300, Praestol 2530 - 0.010-0.015, water-repellent fluid "Osnova-GS" - 0.200-0.300, lubricant KSD - 1.000-1.500, water - 97.290-94.785, carbonate weighting material - 37.000-0.000 plus 100, barite weighting material - 14.000-62.000 plus 100. ^ EFFECT: providing pseudoplastic properties and controlled density of polymer-clay fluid. ^ 1 tbl |
