| 摘要 |
FIELD: mining.SUBSTANCE: invention relates to water-based drilling fluids and can be used when drilling oil and gas wells, mainly when drilling unstable clay rocks and opening productive formations. Drilling mud contains, wt%: clay powder - 5-8; polyelectrolyte VPK-402 - 3-5; water - soluble cellulose ether - 0.3-1.2; water - the rest.EFFECT: invention reduces consumption of polyelectrolyte VPK-402 and improves structural-rheological and filtration properties of the drilling mud.1 cl, 1 tbl, 10 ex |
