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High-temperature-resistant rubber core for rotating control head and preparing method thereof

A technology of rotating control head and high temperature resistant glue, which is used in earth-moving drilling, wellbore/well components, sealing/packaging, etc.

Inactive Publication Date: 2016-06-22
CNPC BOHAI DRILLING ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims to propose a high-temperature-resistant rubber core for a rotary control head and its preparation method to solve the technical problem of poor high-temperature resistance of the rubber core for a rotary control head. It can be used for a long time under the condition of ℃, and it can withstand 150 ℃ in the short term. It can be used for both water-based mud and oil-based mud, and can completely replace imported

Method used

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  • High-temperature-resistant rubber core for rotating control head and preparing method thereof
  • High-temperature-resistant rubber core for rotating control head and preparing method thereof

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Effect test

Embodiment 1

[0034] A high-temperature-resistant rubber core for a rotary control head, which is prepared from the following components in parts by weight: hydrogenated nitrile rubber: 100 parts; zinc oxide: 3 parts; spray carbon black: 10 parts; white carbon black: 40 parts; Antiaging agent RD: 1 part; TAIC: 8 parts; bis-25 vulcanizing agent: 1 part; magnesium methacrylate: 1 part.

[0035] The above-mentioned high temperature resistant rubber core for the rotary control head is made by the following preparation method:

[0036] a. take the raw material components by weighing the above parts for subsequent use;

[0037] b. Put hydrogenated nitrile rubber into the open mill, and add zinc oxide, magnesium methacrylate, anti-aging agent RD, spray carbon black, white carbon black, TAIC, double-25 vulcanizing agent, the front roll temperature of the open mill The temperature is 50℃, the temperature of the back roller is 45℃, after the mixing is uniform, thin pass, eight knives are punched, an...

Embodiment 2

[0043] A high-temperature-resistant rubber core for a rotary control head, which is prepared from the following components in parts by weight: hydrogenated nitrile rubber: 100 parts; zinc oxide: 5 parts; spray carbon black: 20 parts; white carbon black: 30 parts; Antiaging agent RD: 2 parts; TAIC: 2 parts; bis-25 vulcanizing agent: 10 parts; magnesium methacrylate: 6 parts.

[0044] The above-mentioned high temperature resistant rubber core for the rotary control head is made by the following preparation method:

[0045] a. take the raw material components by weighing the above parts for subsequent use;

[0046] b. Put the hydrogenated nitrile rubber into the open mill, and add zinc oxide, magnesium methacrylate, anti-aging agent RD, spray carbon black, white carbon black, TAIC, double-25 vulcanizing agent, the temperature of the front roll of the open mill The temperature of the back roll is 48°C and the temperature of the back roll is 43°C. After mixing evenly, thin pass, p...

Embodiment 3

[0052]A high-temperature-resistant rubber core for a rotary control head, which is prepared from the following components by weight: hydrogenated nitrile rubber: 100 parts; zinc oxide: 15 parts; spray carbon black: 30 parts; white carbon black: 20 parts; Antiaging agent RD: 5 parts; TAIC: 6 parts; bis-25 vulcanizing agent: 7 parts; magnesium methacrylate: 4 parts.

[0053] The above-mentioned high temperature resistant rubber core for the rotary control head is made by the following preparation method:

[0054] a. take the raw material components by weighing the above parts for subsequent use;

[0055] b. Put hydrogenated nitrile rubber into the open mill, and add zinc oxide, magnesium methacrylate, anti-aging agent RD, spray carbon black, white carbon black, TAIC, double-25 vulcanizing agent, the front roll temperature of the open mill The temperature of the back roller is 45°C and the temperature of the rear roller is 40°C. After mixing evenly, thin pass, punch eight knives...

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Abstract

The invention provides a high-temperature-resistant rubber core for a rotating control head and a preparing method thereof. The high-temperature-resistant rubber core for the rotating control head comprises hydrogenated butadiene-acrylonitrile rubber, zinc oxide, spray carbon black, white carbon black, anti-aging agent RD, TAIC, double-25 vulcanizing agent and magnesium methylacrylate. The high-temperature-resistant rubber core for the rotating control head is good in high temperature resistance, can be used at the temperature of 120 DEG C for a long term and used at the temperature of 150 DEG C for a short term, and can be used for water-base mud and also be used for oil-base mud, and imported products can be completely replaced.

Description

technical field [0001] The invention belongs to the field of seals used in petroleum drilling tools and a preparation method thereof, and in particular relates to a high-temperature-resistant rubber core for a rotary control head and a preparation method thereof. Background technique [0002] Underbalanced drilling is a technique in which the bottomhole pressure of the drilling fluid circulation system is lower than the pore pressure of the formation in drilling engineering, so that the fluid in the production layer enters the wellbore in a controlled manner and circulates it to the surface. This technology can greatly improve Mechanical rate of penetration, prolonging the service life of the drill bit, shortening the well construction period, reducing the overall cost of drilling, effectively solving the problem of lost circulation, reducing and avoiding downhole accidents such as differential pressure sticking, and being able to protect and discover oil and gas layers and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08K3/22C08K3/04C08K3/36C08K5/3477C08K5/14C08K5/098E21B33/08
CPCC08K3/22C08K3/04C08K3/36C08K5/098C08K5/14C08K5/3477C08K2003/2296C08L2201/08E21B33/085
Inventor 周振良魏臣兴谢国华吴世民马金山齐金涛黄强郗凤亮姚朝伟
Owner CNPC BOHAI DRILLING ENG