METHOD FOR MANUFACTURE OF WATER-SWELLING PACKER Russian patent published in 2022 - IPC E21B33/12 C08L83/04 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry; it can be used in the production of water-swelling packers. A method for the manufacture of a water-swelling packer includes making water-swelling material of the packer based on siloxane rubber and sodium carboxymethylcellulose. As siloxane rubber, dimethyl siloxane rubber of SKTN-G label is used, paraffin C₁₀-C₁₃ and additive Sicron SF-4000 are additionally introduced into the composition at a certain ratio of components. After mixing components of the composition, it is cured with methyltriacetoxysilane in the calculation of 2.0-4.0 wt.pt. per 100 wt.pt. of components with subsequent cold pressing of swelling material in a mold.

EFFECT: increase in a volume of swelling, and deceleration of swelling time of a water-swelling packer.

1 cl, 1 tbl