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Preparation method of conductive foam composite material for seepage electric simulation experiment

A conductive foam, electrothermal technology, applied in the analysis of materials, suspension and porous materials, permeability/surface area analysis, etc., to achieve the effect of eliminating electrolytic reaction, simple measurement method and low cost

Active Publication Date: 2017-06-23
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention introduces polyethylene conductive foam composite material as a conductive medium into the electrical simulation experiment to replace the traditional saline solution, so as to solve the above-mentioned technical problems existing in the existing conductive medium

Method used

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  • Preparation method of conductive foam composite material for seepage electric simulation experiment
  • Preparation method of conductive foam composite material for seepage electric simulation experiment
  • Preparation method of conductive foam composite material for seepage electric simulation experiment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) First, add the dried HDPE, EVA, and LDPE into the double-roller open mill, the component distribution ratio is HDPE:EVA:LDPE=50:40:10, and knead for 8 minutes, and then add the acetylene mixed with white oil Carbon black (CB) (filling dosage is 20phr), add in the mill, kneading 5min, finally add crosslinking agent DCP to be 0.5phr (phr is percentage content), foaming agent azodicarbonamide ( AC) is added in an amount of 6phr (the ratio of AC to Zn-St is 4:1) and is added to the open mill for 5 times, and then the tablet is removed, and the mixing temperature is 170°C.

[0029] (2) After the mixed sample is placed at room temperature for 24 hours, it is put into a foaming mold, and foamed on a flat vulcanizing machine at a molding temperature of 180°C and a molding pressure of 10Mpa, and the foaming time is 30 minutes.

[0030] (3) Put the prepared foam material into a vacuum drying oven, and heat balance for 3 hours under the condition of 100° C. under normal pressu...

Embodiment 2

[0034] (1) First, add the dried HDPE, EVA, and LDPE into the double-roller open mill, the component distribution ratio is HDPE:EVA:LDPE=50:40:10, and knead for 4 minutes, and then add the acetylene mixed with white oil Carbon black (CB) (filling dosage is 30phr), add in the mill, kneading 4min, finally the addition amount of crosslinking agent DCP is 0.5phr, foaming agent azodicarbonamide (AC) addition amount is 4phr ( The ratio of AC to Zn-St is 4:1) Add it into the open mill and pass it 4 times, then the next piece, the mixing temperature is 170°C.

[0035] (2) After the mixed sample is placed at room temperature for 24 hours, it is put into a foaming mold, and foamed on a flat vulcanizing machine at a molding temperature of 180°C and a molding pressure of 10Mpa, and the foaming time is 28 minutes.

[0036] (3) Put the prepared foam material into a vacuum drying oven, and heat balance for 2.5 hours under the condition of normal pressure of 100°C.

[0037] (4) The SEM photog...

Embodiment 3

[0040] (1) The formed conductive foam composite material was put into a numerical control electric thermal cutting machine for electric thermal cutting treatment, and the material obtained in Example 1 was processed into a cylindrical ring with an outer radius of 0.5m and an inner radius of 0.3m. The material obtained in Example 2 was processed into a cylindrical ring with an outer radius of 0.3 m and an inner radius of 0.02 m.

[0041] (2) The two cylindrical rings made above are tightly nested together, and the inner diameter of the inner cylindrical ring is inserted into a 0.02m copper simulation well, such as image 3 As shown, among them, 1—copper simulated vertical well, 2—outer cylindrical ring, and 3—inner cylindrical ring, the electric simulation experiment of planar heterogeneous formation can be carried out.

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Abstract

The invention provides a preparation method of CB (acetylene black)-filled HDPE (high-density polyethylene) conductive foam for a seepage electric simulation experiment and a cutting treatment method for the electric simulation experiment. Experiment equipment consists of an SK-160B double-roll refining machine, an XLB press vulcanizer, a digital multimeter, a DZF-6050 vacuum drying box, a TM-902C digital thermometer, an analysis and scanning electronic microscope, and a JH-2 numerically-controlled foam cutting machine. Experiment materials comprise HDPE, LDPE (low-density polyethylene), EVA (ethylene-vinyl acetate), CB with average granularity of 45 to 68nm, DCP (dicumyl peroxide), AC (azodicarbonamide), Zn-St (zinc stearate) and white oil. The preparation method has the advantages that the preparation technology is simple, and the cost is low; after later electrothermal cutting treatment, a stratum model for the electric simulation experiment can be manufactured.

Description

technical field [0001] The invention relates to oil and gas seepage technology, belongs to the field of oil and gas field development, and particularly relates to a preparation method of acetylene carbon black filled high-density polyethylene system conductive foam suitable for seepage electrical simulation experiments and a cutting treatment method suitable for electrical simulation experiments. Background technique [0002] Hydropower simulation experiment is a method to study the mechanism of fluid seepage in the process of fluid flow, based on the principle of hydropower similarity. Hydropower simulation was invented by Soviet scientists in 1918, and it was applied to the experimental study of seepage mechanics in oil and gas reservoirs in 1933. The hydroelectric simulation device is simple and easy to operate, and the experiment period is short, so it is widely used in the field of oil and gas seepage. [0003] At present, the experimental research methods of reservoir...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K3/04C08K5/14C08K5/098C08J9/10G01N15/08
CPCC08J9/103C08J2203/04C08J2323/06C08J2423/06C08J2423/08C08K2201/001C08L23/06C08L2203/14C08L2205/025C08L2205/03C08L2207/062C08L2207/066G01N15/08G01N15/088C08L23/0853C08K3/04C08K5/14C08K5/098
Inventor 郝永卯刘昀晔陶柳
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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