A kind of preparation method of lipophilic hydrophobic membrane-covered proppant

A technology of hydrophobicity and proppant, applied in chemical instruments and methods, earthwork drilling, drilling composition, etc., can solve the problem of low crude oil yield

Inactive Publication Date: 2017-08-25
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a proppant, and the prepared proppant can solve the problems of the traditional film-coated proppant that both oil and water can permeate and the yield of crude oil is low

Method used

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  • A kind of preparation method of lipophilic hydrophobic membrane-covered proppant
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  • A kind of preparation method of lipophilic hydrophobic membrane-covered proppant

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preparation example Construction

[0020] The preparation process of the lipophilic hydrophobic film-coated proppant of the present invention is as follows:

[0021] Raw materials in parts by weight: 100 parts of quartz sand and ceramsite aggregate; 3-5 parts of thermoplastic resin; 0.5-2 parts of petroleum pitch; 0.05-0.2 parts of silane coupling agent; 0.3-0.6 parts of plasticizer; ~0.6; dispersant 0.1~0.4.

[0022] The thermoplastic resin and the petroleum pitch are mixed and heated to 70-100° C., melted, stirred and kneaded for 10-30 minutes to obtain the mixed resin. Weigh 20-40 mesh quartz sand and ceramsite mixed aggregate and put it into the resin sand mixer and heat it to 140-230°C, then add silane coupling agent, mixing resin, plasticizer and amine curing agent in turn under stirring, Stir until there is a sign of dispersion, add a dispersant, discharge, cool, and sieve to obtain a lipophilic and hydrophobic film-coated proppant.

[0023] Optimally, the thermoplastic resin is a mixture of any two or...

Embodiment 1

[0030] Preparation of lipophilic and hydrophobic mixing resin: Weigh 15g of epoxy resin and 15g of phenolic resin, mix and stir, heat to 90°C, melt, stir and knead for 25min.

[0031] Preparation of film-coated proppant: Weigh 1kg of 20 / 40 mesh quartz sand and put it into a resin sand mixer, heat it to 180°C, add 0.5g of silane coupling agent KH550 under stirring, add the mixed resin after 20s, and then add 3g Continue to stir the dimethyl phthalate for 30s, add 3g of hexamethylenetetramine, stir and solidify until there are signs of dispersion, add 1g of calcium stearate to disperse for 10s, discharge, cool, and sieve to obtain lipophilic and hydrophobic coatings. membrane proppant.

Embodiment 2

[0033] Preparation of lipophilic and hydrophobic mixed resin: Weigh 15g epoxy resin, 15g phenolic resin and 5g petroleum pitch, mix and stir, heat to 90°C, melt, stir and knead for 25min.

[0034] Preparation of film-coated proppant: Weigh 1kg of 20 / 40 mesh quartz sand and put it into a resin sand mixer, heat it to 180°C, add 0.5g of silane coupling agent KH550 under stirring, add the mixed resin after 20s, and then add 3g Continue to stir the dimethyl phthalate for 30s, add 3g of hexamethylenetetramine, stir and solidify until there are signs of dispersion, add 1g of calcium stearate to disperse for 10s, discharge, cool, and sieve to obtain lipophilic and hydrophobic coatings. membrane proppant.

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Abstract

The invention discloses a preparation method of an oleophilic hydrophobic coated proppant. The method comprises the following steps: 1) mixing a thermoplastic resin and petroleum asphalt, heating to 70-100 DEG C, melting, stirring and compounding to obtain a compounded resin; and weighing 20-40-mesh quartz sand and haydite aggregate, adding into a resin sand mill, heating to 140-230 DEG C, sequentially adding a silane coupling agent, the compounded resin, a plasticizer and an amine curing agent while stirring, adding a dispersing agent when a dispersion evidence occurs, discharging, cooling, and screening to obtain the oleophilic hydrophobic coated proppant. After adding the asphalt, the coated proppant product has favorable oleophilicity and hydrophobicity, has higher flow conductivity in crude oil than the traditional coated proppant, is beneficial to petroleum exploitation, enhances the oil output of the crude oil, and has crucial importance for enhancing crude oil production rate and grade of China.

Description

technical field [0001] The invention belongs to the fields of oil and gas well fracturing exploitation and proppant production, and in particular relates to a preparation method of an oil-wet and hydrophobic film-coated proppant. Background technique [0002] Petroleum fuels are typically extracted from subterranean reservoirs via boreholes, and currently, from low permeability reservoirs by hydraulically fracturing formations such as rock masses with varying degrees of porosity and permeability. In the process of hydraulic fracturing in oil and gas fields, a large amount of petroleum proppant is mixed with fracturing fluid and pumped into the underground oil reservoir at high pressure and high speed to fill the fractures produced by fracturing and recovery, so that the crude oil around the oil well can pass through the petroleum proppant The voids enter the bottom of the oil well, thereby increasing the oil production capacity of the oil field. [0003] The ideal film-cove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/80
CPCC09K8/805
Inventor 王义霞严春杰陈涛马睿雷新荣
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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