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Water-swelling rubber composite material, and preparation method and application thereof

A water-swelling rubber and composite material technology, used in chemical instruments and methods, drilling compositions, etc., can solve problems such as large particles and poor oil-water selectivity, achieve high expansion ratio, improve binding force, and improve compatibility. sexual effect

Inactive Publication Date: 2014-02-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a kind of water-swellable rubber composite material, and use mechanical method to micronize it, and carry out particle size classification through vibration to obtain ultrafine rubber particles with required particle size. It improves the shortcomings of traditional rubber particles, such as large particles and poor oil-water selectivity, and has a good swelling effect when encountering water in the case of high salinity, and can be used for plugging large pores or high-permeability strips in deep formations of oil reservoirs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take by weighing the raw materials listed in Example 1 in parts by weight in Table 1, and prepare according to the following processing steps:

[0033] (a) Mix the measured rubber, superabsorbent resin, and metal ion sealing agent in an open mill for 10 minutes;

[0034] (b) Add solid softener, coloring agent, anti-aging agent and accelerator and knead in open mill for 5 minutes;

[0035] (c) adding zinc oxide, reinforcing agent and plasticizer and kneading in open mill for 10 minutes;

[0036] (d) After finally adding the vulcanizing agent, carry out kneading on an open mill to obtain mixture A;

[0037] (e) polyethylene glycol and MDI are mixed uniformly in an equimolar ratio to obtain a mixture B;

[0038] (f) Mix mixture A and B on the open mill for 5 minutes, remove the tablet, and cool for 24 hours;

[0039] (g) Put the product into a mold and vulcanize on a flat vulcanizer for 30 minutes to obtain a new water-swellable rubber composite material, wherein the vu...

Embodiment 2

[0044] Take by weighing the raw materials listed in Example 1 in parts by weight in Table 2, and prepare according to the following processing steps:

[0045] (a) earlier the metered rubber, superabsorbent resin, and metal ion sealing agent were mixed in an open mill for 20 minutes;

[0046] (b) Add solid softener, colorant, anti-aging agent and accelerator and mix in open mill for 10 minutes;

[0047] (c) adding zinc oxide, reinforcing agent and plasticizer and kneading in open mill for 10 minutes;

[0048] (d) After finally adding the vulcanizing agent, carry out kneading on an open mill to obtain mixture A;

[0049] (e) polyethylene glycol and MDI are mixed uniformly in an equimolar ratio to obtain a mixture B;

[0050] (f) Mix mixture A and B on the open mill for 5 minutes, remove the tablet, and cool for 24 hours;

[0051] (g) Put the product into a mold and vulcanize on a flat vulcanizer for 40 minutes to obtain a new water-swellable rubber composite material, wherein...

Embodiment 3

[0056] Take by weighing the raw material listed in Example 1 in parts by weight in Table 3, and prepare according to the following processing steps:

[0057] (a) earlier the metered rubber, superabsorbent resin, and metal ion sealing agent were mixed in an open mill for 20 minutes;

[0058] (b) Add solid softener, colorant, anti-aging agent and accelerator and mix in open mill for 10 minutes;

[0059] (c) adding zinc oxide, reinforcing agent and plasticizer and kneading in open mill for 10 minutes;

[0060] (d) After finally adding the vulcanizing agent, carry out kneading on an open mill to obtain mixture A;

[0061] (e) polyethylene glycol and MDI are mixed uniformly in an equimolar ratio to obtain a mixture B;

[0062] (f) Mix mixture A and B on the open mill for 5 minutes, remove the tablet, and cool for 24 hours;

[0063] (g) Put the product into a mold and vulcanize on a flat vulcanizer for 60 minutes to obtain a new water-swellable rubber composite material, wherein ...

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PUM

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Abstract

The invention discloses a water-swelling rubber composite material. The rubber composite material is formed from the following components in parts by weight: 100 parts of rubber, 30-100 parts of super adsorbent resin, 2-10 parts of metal ion sealing agent, 0.5-2.5 parts of solid softening agent, 0.5-3.5 parts of coloring agent, 1-7 parts of anti-aging agent, 1-7 parts of accelerant, 1-8 parts of zinc oxide, 5-45 parts of reinforcing agent, 5-20 parts of plasticizer, 0.1-2.6 parts of vulcanizing agent, and 5-45 parts of mixture of PEG (polyethylene glycol) and MDI (diphenylmethane diisocyanate) at a molar ratio of 1:1. The invention further provides a preparation of the rubber composite material, in particular provides an application of the rubber composite material as superfine rubber swelling particles in a large pore path or high-permeability belt of a reservoir deep strata for profile control and water shutoff of an oil-water well.

Description

technical field [0001] The invention relates to a profile control and water shutoff material used in new oilfield exploitation, in particular to a water-swellable rubber composite material and its preparation method and application. Background technique [0002] Most oil reservoirs in China have entered the middle and late stages of development, and the heterogeneity of reservoirs has increasingly serious impact on the displacement effects of water flooding and chemical flooding, and the problem of heterogeneity needs to be solved urgently. As an important profile control technology, deep profile control can economically and effectively adjust and improve the heterogeneity of reservoirs, increase the volumetric sweep coefficient of injection fluid, and enhance oil recovery. The long validity period of rubber has attracted the attention of researchers. Oilfields used to crush waste rubber particles and apply on-site profile control, which achieved certain results. High-quali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L7/00C08L9/06C08L23/22C08L33/02C08L51/02C08L75/08C08K13/02C09K8/512
Inventor 刘承杰汪庐山王涛靳彦欣李再峰徐鹏宋岱峰尹相文付琛张雁
Owner CHINA PETROLEUM & CHEM CORP
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