Rubber composition and application thereof, high-temperature-resistant water-sensitive rubber cylinder and preparation method and application thereof, and high-temperature-resistant water-sensitive packer and application thereof

• Main Authors: WANG LEI, ZHANG FENGBO, WANG LILI, HE CHUANXING, SHI YU, WANG HONG, ZHANG YANGYANG, YANG XIN, YANG SHUYING, SU JINGXIN, JIAN SHUXU, GAO SHAOSI, AN JIUQUAN, GUO YUQIANG
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; METALLURGY; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention relates to the field of oilfield chemistry, and discloses a rubber composition which is characterized by comprising the following components in parts by weight: 100 parts of first raw rubber, 80-100 parts of first water-absorbent resin, 1.5-2 parts of nano calcium oxide, 15-25 parts of nano silicon dioxide, 3-5 parts of a vulcanizing agent, 0.5-1 part of a vulcanization accelerator and 5-8 parts of a first coupling agent, the first raw rubber is fluororubber. The rubber composition contains the fluororubber and the first water-absorbent resin with specific contents, and is matched with the nano calcium oxide and the nano silicon dioxide with specific contents, so that the water-sensitive rubber cylinder prepared from the rubber composition can resist high-temperature water vapor of at least 193 DEG C while having high expansion rate, high mechanical strength and high hardness, and the service life of the water-sensitive rubber cylinder is prolonged. The stability is high, and the performance is