FIELD: chemistry.
SUBSTANCE: invention relates to rubber industry, in particular, to creation of rubber mixture based on rubber of general purpose. Rubber mixture for the packer cuff, which swells in the drilling mud "Polyekonol-Flora", based on natural rubber, containing target additives, including chrysotile asbestos. Chrysotile asbestos is dispersed in a melt ε-caprolactam with derivatives of p-phenylenediamine, and then obtained dispersion is dispersed in double ethylene-propylene rubber, with the following ratio of components, wt. %: chrysotile asbestos - 63.75–71.25; p-phenylenediamine derivative - 1.875–5.625; ε-caprolactam - 1.875–5.625; double ethylene-propylene rubber - 25.00. Content of dispersed chrysotile asbestos is 100–130 wt. by 100 wt h. rubber.
EFFECT: invention increases the diameter of the collar of the packer device placed in the drilling fluid "Polyekonol-Flora" by no more than 10 % on 10th swelling day and at least 30 % after 60 days.
1 cl, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| RUBBER MIXTURE FOR THE CUFF OF A PACKER APPARATUS, SWELLING IN THE "POLYEMULSAN" DRILLING FLUID | 2020 |
|
RU2764685C2 |
| RUBBER MIXTURE FOR CUFF OF PACKER DEVICE, SWELLING IN DRILLING FLUID CaCl WITH 26% CONCENTRATION | 2021 |
|
RU2787470C2 |
| RUBBER MIXTURE FOR A PACKER DEVICE CUFF, WHICH SWELLS IN AN AQUEOUS SOLUTION OF NaCl OR CaCl WITH CONCENTRATION OF NOT MORE THAN 25 % | 2018 |
|
RU2700606C1 |
| RUBBER COMPOUND BASED ON FLUORINE RUBBER SKF-26 | 2019 |
|
RU2725238C1 |
| VULCANISABLE RUBBER MIXTURE BASED ON FLUORINE RUBBER SKF-26 | 2020 |
|
RU2743699C1 |
| WATER SWELLING RUBBER MIXTURE FOR PACKER EQUIPMENT | 2017 |
|
RU2654029C1 |
| WATER SWELLING RUBBER MIXTURE FOR PACKER EQUIPMENT | 2017 |
|
RU2653024C1 |
| ELASTOMERIC COMPOSITION AND METHOD FOR PRODUCTION THEREOF | 2020 |
|
RU2755481C1 |
| VOLCANIZABLE RUBBER MIXTURE BASED ON FLUOROELASTOMER | 2017 |
|
RU2656496C1 |
| WATER-OIL-SWELLING THERMOPLASTIC ELASTOMER COMPOSITION | 2018 |
|
RU2690929C1 |
