Rubber product used for packer

Abstract

The invention provides a rubber product used for a packer in petroleum drilling and production, belongs to the field of rubber products and aims at solving the problems that existing packers are poor in oil resistance, high temperature resistance and high pressure resistance, prone to being aged and in need of continuously replacement, labor amount is increased, and the working efficiency is lowered. The rubber product used for the packer is prepared from 140-180 parts of fluororubber 23, 5-20 parts of white carbon black; 40-50 parts of mica powder, 20-40 parts of fine particle calcium carbonate, 5-25 parts of zinc oxide, 4 parts of magnesia, 5-10 parts of fatty glyceride, 5-10 parts of accelerant DM, 1-5 parts of anti-aging agents NBC, 5-20 parts of vulcanizing agents BP and 5-10 parts of epoxy plasticizer. By means of the formula, the obtained rubber product is capable of being resistant to the high temperature of 250 DEG C and the pressure of 60 MPa, has excellent oil resistance and anti-aging performance and can be widely used in the spacer of a coiled tube in petroleum drilling and production.

Description

technical field

[0001] The invention belongs to the field of rubber products, in particular to a rubber product used for packers in oil drilling. Background technique

[0002] Coiled tubing is relative to conventional single threaded tubing, also known as flexible tubing, serpentine tubing or coiled tubing. Long tubing mouth. In recent years, coiled tubing has been widely used in various downhole operations due to its high efficiency and economy, including sandblasting and perforating fracturing technology. The downhole tools used in coiled tubing sandblasting and perforating fracturing operations in foreign countries are divided into three types according to the isolation form: sand plug isolation, drillable bridge plug isolation and packer isolation. After the sand blasting and perforating operation, the sand plug isolation requires the second string to complete the sand flushing operation, and the drillable bridge plug requires the second string to complete the plug dri...

Examples

Embodiment 1

[0016] A rubber product for a packer, characterized in that, in parts by weight, the formula is: 140 parts of 23-type fluororubber; 20 parts of white carbon black; 40 parts of mica powder; 40 parts of fine particle calcium carbonate; 5 parts of zinc; 4 parts of magnesium oxide; 5 parts of fatty acid glycerides; 10 parts of accelerator DM; 1 part of anti-aging agent NBC; 20 parts of vulcanizing agent BP; 5 parts of epoxy plasticizer.

Embodiment 2

[0018] A rubber product for a packer, characterized in that, in parts by weight, the formula is: 150 parts of 23-type fluororubber; 15 parts of white carbon black; 42 parts of mica powder; 35 parts of fine particle calcium carbonate; 10 parts of zinc; 4 parts of magnesium oxide; 6 parts of fatty acid glyceride; 9 parts of accelerator DM; 2 parts of anti-aging agent NBC; 18 parts of vulcanizing agent BP; 6 parts of epoxy plasticizer.

Embodiment 3

[0020] A rubber product for a packer, characterized in that, in parts by weight, the formula is: 160 parts of 23-type fluororubber; 10 parts of white carbon black; 46 parts of mica powder; 30 parts of fine particle calcium carbonate; 15 parts of zinc; 4 parts of magnesium oxide; 8 parts of fatty acid glycerides; 8 parts of accelerator DM; 3 parts of antioxidant NBC; 15 parts of vulcanizing agent BP; 8 parts of epoxy plasticizer.

technical field

[0001] The invention belongs to the field of rubber products, in particular to a rubber product used for packers in oil drilling. Background technique

[0002] Coiled tubing is relative to conventional single threaded tubing, also known as flexible tubing, serpentine tubing or coiled tubing. Long tubing mouth. In recent years, coiled tubing has been widely used in various downhole operations due to its high efficiency and economy, including sandblasting and perforating fracturing technology. The downhole tools used in coiled tubing sandblasting and perforating fracturing operations in foreign countries are divided into three types according to the isolation form: sand plug isolation, drillable bridge plug isolation and packer isolation. After the sand blasting and perforating operation, the sand plug isolation requires the second string to complete the sand flushing operation, and the drillable bridge plug requires the second string to complete the plug dri...

Examples

Embodiment 1

[0016] A rubber product for a packer, characterized in that, in parts by weight, the formula is: 140 parts of 23-type fluororubber; 20 parts of white carbon black; 40 parts of mica powder; 40 parts of fine particle calcium carbonate; 5 parts of zinc; 4 parts of magnesium oxide; 5 parts of fatty acid glycerides; 10 parts of accelerator DM; 1 part of anti-aging agent NBC; 20 parts of vulcanizing agent BP; 5 parts of epoxy plasticizer.

Embodiment 2

[0018] A rubber product for a packer, characterized in that, in parts by weight, the formula is: 150 parts of 23-type fluororubber; 15 parts of white carbon black; 42 parts of mica powder; 35 parts of fine particle calcium carbonate; 10 parts of zinc; 4 parts of magnesium oxide; 6 parts of fatty acid glyceride; 9 parts of accelerator DM; 2 parts of anti-aging agent NBC; 18 parts of vulcanizing agent BP; 6 parts of epoxy plasticizer.

Embodiment 3

[0020] A rubber product for a packer, characterized in that, in parts by weight, the formula is: 160 parts of 23-type fluororubber; 10 parts of white carbon black; 46 parts of mica powder; 30 parts of fine particle calcium carbonate; 15 parts of zinc; 4 parts of magnesium oxide; 8 parts of fatty acid glycerides; 8 parts of accelerator DM; 3 parts of antioxidant NBC; 15 parts of vulcanizing agent BP; 8 parts of epoxy plasticizer.