Sealing rubber core used for rotating control head and preparation method thereof

Abstract

The invention belongs to technical field of drilling well, and concretely relates to a sealing rubber core used for rotating a control head and a preparation method thereof. The sealing rubber core comprises the following raw materials by weight: 60-90 parts of smoked rubber sheet3#, 10-30 parts of hydrogenated butadiene-acrylonitrile rubber, 5-10 parts of zinc oxide, 1-3 parts of stearic acid, 2-4 parts of antioxidant 4020, 10-30 parts of carbon black N330, 20-30 parts of carbon black N550, 3-10 parts of softener DOS, 1-2 parts of promoter CZ, 1-3 parts of promoter DM, 1-2 parts of promoter TMTD, 0.4-1 part of vulcanizing agent S, and 0.5-1.5 parts of vulcanizing agent DTDM. The sealing rubber core has the advantages of high performance, long service life, high pressure-resistant value, strong corrosion resistant capability, high abrasion resistance and strong anti-tear performance.

Description

technical field [0001] The invention belongs to the technical field of drilling, and in particular relates to a special sealing rubber core for a rotary control head and a preparation method thereof. Background technique [0002] In recent years, the use of gas drilling technology, managed pressure drilling technology and underbalanced drilling technology in China has shown a good development momentum, and the scale of use is increasing. The use of gas drilling technology in Northeast Sichuan and Xinjiang has outstanding effects, and has become the main technical means to increase speed and efficiency in the exploration and development of oil and gas fields in this area; at the same time, my country is paying more and more attention to the development of coalbed methane, and gas drilling technology has an It has obvious technical advantages in development. Managed pressure drilling technology is an advanced technology that has been actively researched and promoted in China i...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a special sealing rubber core for the rotary control head and a preparation method thereof, which has high performance in view of the problems of poor performance, high cost, and short service life of the current special sealing rubber core for the rotary control head; Long service life; high pressure resistance; strong corrosion resistance; high wear resistance; strong tear resistance