Rubber material used for preparing packer rubber cylinders, and preparation method thereof
A rubber material and a technology for a packer are applied in the field of rubber materials for making packer rubber cylinders and the field of preparation thereof, and can solve problems such as a working environment that cannot meet high temperature and high pressure.
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preparation example Construction
[0062] In an exemplary embodiment of the preparation method of the rubber material for making packer rubber cartridges of the present invention, the preparation raw materials of the preparation method may include the above-mentioned raw materials, for example, in terms of mass fraction: 36-50% hydrogenated butyl Nitrile rubber, 12-33% spray carbon black, 1-14% thermal cracking carbon black, 3-14% nano-silica, 3-19% clay, 1-9% plasticizer, 0.5-2% anti-aging agent, 0.5-2% vulcanizing agent, 1-4% crosslinking accelerator, the preparation method may include the following steps:
[0063] The first mixing: Put the following components into the mixing machine in turn:
[0064] Preparation of hydrogenated nitrile rubber in raw materials;
[0065] Preparation of thermal cracking carbon black in raw materials;
[0066] Spray carbon black in the preparation raw material;
[0067] Prepare nano white carbon black in the raw material;
[0068] Preparation of pottery clay and plasticizer...
example 1
[0095] Since downhole seals must resist more harsh and complex working conditions such as high sulfur oil, H 2 S, high temperature brine, CO 2 Strong corrosive media, and most of the equipment is exposed to drilling fluids containing preservatives and various additives, so a rubber material that can withstand the harsh environment mentioned above is required.
[0096] Underground harsh environment: H2S content in some formations reaches over 40%, wellbore acid concentration over 20%, formation water salinity over 80,000mg / L.
[0097] Hydrogenated nitrile rubber Therban (HNBR) and other materials used in the petroleum industry such as high temperature resistant and oil resistant elastomer fluororubber FKM, nitrile rubber NBR, hydroxy nitrile rubber XNBR and other materials are tested for acid gas, diesel and water mixture performance Comparative Experiment.
[0098] The experimental conditions are: vapor pressure 10MPa. The acid gas composition is (volume ratio): 20% hydroge...
example 2
[0105] In this example, the end barrel material and middle barrel material were prepared from the raw materials in the mass fractions shown in the table below:
[0106] unit:% Tip Cartridge Material Medium rubber tube material HNBR4307 41 45 Spray carbon black 28 17 Pyrolytic carbon black 9 6 Nano silica 250MP 8 9 Clay 8 14 Plasticizer TOTM 2 5 Antiager 445 0.5 0.5 Antiaging agent ZMTI 0.5 0.5 Vulcanizing agent BIBP 1 1 Cross-linking accelerator PDM 2 2
[0107] The specific preparation steps of the end rubber tube material and the middle rubber tube material are as follows:
[0108] Step 1: According to the ratio in the table, put all other materials except vulcanizing agent BIBP and crosslinking accelerator PDM into the internal mixer and mix to obtain one-end masterbatch. And the delivery order is hydrogenated nitrile rubber HNBR4307, thermal cracking carbon black, spray carbon black, na...
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Abstract
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