High-temperature resistant oil well rubber sealing ring material and preparation method thereof

A technology of rubber sealing ring and high temperature resistance, applied in the field of rubber materials, can solve the problems of reduced service life, aging and loss of rubber sealing packing, etc., and achieve poor compatibility and adhesion, good high temperature resistance, and reduced raw material costs Effect

Active Publication Date: 2014-01-08
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The study found that in the process of crude oil extraction, the rod pumping equipment plays a major decisive role, and the wellhead polished rod sealing device is the most important in the rod pumping equipment, and the sealing device in the wellhead sealing device of the pumping unit The packing produces sliding friction with the sucker rod 24 hours a day, and the temperature difference across the country is very large, which will accelerate the aging of rubber sealing packing commonly used in oil fields, reduce its service life, and more seriously, cause Oil spill
At present, the sealing packing materials used in the market are mainly various kinds of packing, such as graphi

Method used

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  • High-temperature resistant oil well rubber sealing ring material and preparation method thereof
  • High-temperature resistant oil well rubber sealing ring material and preparation method thereof
  • High-temperature resistant oil well rubber sealing ring material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] Example 1:

[0042] Inner glue:

[0043]

[0044] middle layer:

[0045]

[0046] Outer glue:

[0047]

[0048] (1) According to the formula of Example 1, weigh the raw materials of the inner and outer layer rubber and the middle layer, except for the high-strength woven fabric, and mix them with an open mill or internal mixer, and then filter the mixed rubber powder separately To remove impurities and obtain pre-rubber powder;

[0049] (2) Pass the pre-rubber powder obtained in step (1) through a cold-feed compound extruder (SH-36, Nanjing Jieya Extrusion Equipment Co., Ltd., the temperature of the extruder is set between 80-100°C) Extrude the inner and outer layers and the middle layer of glue. When extruding, control the thickness of the glue layer to 10mm, and cut it to the specified size as needed;

[0050] (3) In the order of "rubber-woven fabric-rubber-woven fabric-rubber", add the rubber material of the inner layer, middle layer, outer layer and woven cloth cut in step (...

Example Embodiment

[0053] Example 2

[0054] Inner glue:

[0055]

[0056] middle layer:

[0057]

[0058] Outer glue:

[0059]

[0060] The preparation method of this embodiment is similar to that of embodiment 1. During the preparation process: the thickness of the extruded rubber layer is 8mm, the thickness of the added woven cloth is 0.4mm, the inner and outer layers are both 4-layered, and the middle layer is 5-layer structure, curing time is 25min, curing temperature is 165℃.

Example Embodiment

[0061] Example 3

[0062] Inner glue:

[0063]

[0064] middle layer:

[0065]

[0066] Outer glue:

[0067]

[0068] The preparation method of this embodiment is similar to that of embodiment 1. During the preparation process: the thickness of the extruded rubber layer is 4mm, the thickness of the added woven cloth is 0.1mm, the inner and outer layers are both set to have a 7-layer structure, and the middle layer is 5-layer structure, curing time is 20min, curing temperature is 150℃.

[0069] The performance tests of the finished products prepared in the above 3 examples are as follows:

[0070]

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Abstract

The invention provides a high-temperature resistant oil well rubber sealing ring material and a preparation method thereof. The rubber sealing ring material is composed of three parts: the inner layer and the outer layer are both composed of high-strength knitted cloth added with inorganic materials such as carbon black, nano zirconia, and the like; the middle layer is prepared through following steps: compounding rubber powder, which has been desulfurated through thermal mechanical shearing, with fluoro-rubber, adding a compatilizer to increase the compatibility between the rubber powder and the fluoro-rubber; then adopting high-strength knitted cloth, which has been subjected to a surface treatment, as the support body, adding inorganic filling materials such as carbon black, nano zirconia, and the like, and subjecting the knitted cloth added with inorganic filling materials to a high-temperature sulfide cross-linked forming so as to obtain the middle layer. The sealing ring knitted cloth and the rubber base material are subjected to processes of multi-layer compounding and sulfide forming. The sealing ring prepared by the invention has a good high-temperature resistant performance, and is capable of being used in areas with a large temperature difference for a long period.

Description

technical field [0001] The invention belongs to the technical field of rubber materials, in particular to a rubber sealing ring material and a preparation method thereof. Background technique [0002] Petroleum is a basic energy closely related to people's lives. The rapid development of the petroleum industry plays a very important role in the development of the national economy. As the amount of recoverable crude oil decreases year by year, the importance of achieving sustainable development, crude oil extraction The efficiency of oil production and the improvement of ultimate recovery factor have gradually become the issues considered by oil workers. [0003] The study found that in the process of crude oil extraction, the rod pumping equipment plays a major decisive role, and the wellhead polished rod sealing device is the most important in the rod pumping equipment, and the sealing device in the wellhead sealing device of the pumping unit The packing produces sliding f...

Claims

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Application Information

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IPC IPC(8): B32B25/10B32B17/06B32B37/02C08L27/12C08L29/10C08L17/00C08L23/26C08K3/04C08K3/22F16J15/20
Inventor 陶国良夏艳平
Owner CHANGZHOU UNIV
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