Hydrophilic resin composition, and preparation method and application thereof

A technology of hydrophilic resin and composition, applied in the direction of epoxy resin glue, earthwork drilling, adhesive type, etc., can solve problems such as proppant agglomeration, achieve low air bubble content, high crushing strength, and prevent closure Effect

Inactive Publication Date: 2014-06-11
ELION RESOURCE GROUP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In order to solve the problem that the fracturing fluid carrying the proppant obtained by coating the quartz sand with a hydrophobic resin needs to be sent underground at a higher pumping pressure, the inventors of the present invention conducted in-depth research and found that: Compared with the fracturing fluid using ceramsite or quartz sand as the proppant, the proppant agglomeration phenomenon is obvious in the fracturing fluid using the hydrophobic resin-coated quartz sand as the proppant, and the fracturing fluid also contains a large number of air bubbles

Method used

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  • Hydrophilic resin composition, and preparation method and application thereof
  • Hydrophilic resin composition, and preparation method and application thereof
  • Hydrophilic resin composition, and preparation method and application thereof

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preparation example Construction

[0014] The invention provides a kind of preparation method of hydrophilic resin composition, the method comprises:

[0015] The epoxy resin is first contacted with at least one modifier, and the modifier is selected from acid anhydrides, and the conditions of the first contact make the hydroxyl group in the epoxy resin and the acid anhydride in the modifier group reactions; and

[0016] The mixture obtained from the first contacting is subjected to a second contacting with at least one basic material under conditions sufficient to cause the acid to form a salt.

[0017] According to the method of the present invention, the modifying agent is selected from acid anhydrides. When the modifier is contacted with the epoxy resin, the acid anhydride group reacts with the hydroxyl group contained in the molecular structure of the epoxy resin to form a carboxylic acid.

[0018] The acid anhydride is preferably selected from organic acid anhydrides, more preferably from aliphatic acid...

Embodiment 1

[0062] (1) Dissolve 100g of epoxy resin (commercially purchased from Langfang Nuoerxin Chemical Co., Ltd., brand E-21, epoxy value 0.21mol / 100g, hydroxyl value 0.226mol / 100g) in 50g toluene, add 0.003 g hydroquinone, the pH value of the reaction solution was adjusted to 2. With stirring, the temperature was raised to 100°C, then 9.8g of maleic anhydride was added, and the reaction was stirred at this temperature for 2 hours; then the temperature was lowered to 40°C, 10.1g of triethylamine was added, and the reaction was continued for 0.5 hours to obtain The mixture evaporates the solvent with a rotary evaporator, thereby obtaining the hydrophilic resin composition of the present invention.

[0063] (2) Mix 100g of the hydrophilic resin composition obtained in step (1) with 2000g of raw sand (commercially purchased from Qingtongxia Jinshengyuan Proppant Co., Ltd., with a particle size of 30-50 mesh) and stir for 2 minutes, then add 25g of tetrahydrophthalic anhydride and 3g of...

Embodiment 2

[0069] (1) Dissolve 100g of epoxy resin (commercially purchased from Langfang Nuoerxin Chemical Co., Ltd., brand E-51, epoxy value 0.51mol / 100g, hydroxyl value 0.046mol / 100g) in 50g of toluene, add 0.001 g hydroquinone, the pH value of the reaction solution was adjusted to 4. With stirring, the temperature was raised to 100°C, then 3.0g of maleic anhydride was added, and the reaction was stirred at this temperature for 3 hours; then the temperature was lowered to 50°C, 4.3g of tri-n-propylamine was added, and the reaction was continued for 0.5 hours, The obtained mixture was evaporated with a rotary evaporator to obtain the hydrophilic resin composition of the present invention.

[0070] (2) Mix 100g of the hydrophilic resin composition obtained in step (1) with 2000g of raw sand (commercially purchased from Qingtongxia Jinshengyuan Proppant Co., Ltd., with a particle size of 30-50 mesh) and stir for 2 minutes, then add 30g of diaminodiphenylmethane was stirred at 180°C for 3...

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Abstract

The invention provides a hydrophilic resin composition and a preparation method thereof. The method comprises the following steps: allowing an epoxy resin to have first contact with a modifier selected from acid anhydride to make the hydroxy group in the epoxy resin react with the acid anhydride group in the modifier; and allowing a mixture obtained through the first contact to have second contact with an alkaline substance in order to make an acid form a salt. The invention also provides an application of the hydrophilic resin composition in the preparation of fracturing propping agents. The fracturing propping agent obtained by coating raw sand with the hydrophilic resin composition has good dispersibility, and do not agglomerate basically; the content of bubbles in a water-based fracturing fluid carrying out the fracturing propping agent is low; and the fracturing propping agent has a high crushing limit, and can effectively prop cracks in order to prevent the closure of the cracks.

Description

technical field [0001] The invention relates to a hydrophilic resin composition and a preparation method thereof, and also relates to the application of the hydrophilic resin composition in preparing a fracturing proppant. Background technique [0002] During the exploitation of oil and natural gas, after the high closure pressure and low permeability ore deposits are treated by fracturing, the oil-gas-bearing rock formations are cracked, and the oil and gas are collected from the channels formed by the fractures, and the fracturing proppant enters the formation filling along with the fracturing fluid. In rock fractures, it plays a role in supporting the cracks from closing due to stress release, so as to maintain high conductivity, make oil and gas unblocked, and increase oil and gas production. [0003] At present, ceramsite and quartz sand are mainly fracturing proppants widely used in oilfields. However, the breakage rate of ceramsite and quartz sand is high, and the cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/16C08G59/14C09J163/00C09K8/80C04B14/04C04B14/06
Inventor 高双之周玉生仲晓东陈步宁顾卫荣王建伟刘珊
Owner ELION RESOURCE GROUP
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