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Fracturing propping agent and preparation method thereof

A fracturing proppant and modifier technology, applied in the field of fracturing proppant, can solve problems such as agglomeration of fracturing proppant, and achieve the effect of high crushing resistance and preventing closure

Inactive Publication Date: 2014-06-11
ELION RESOURCE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Fracturing propping agent and preparation method thereof
  • Fracturing propping agent and preparation method thereof
  • Fracturing propping agent and preparation method thereof

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preparation example Construction

[0013] The preparation method of the fracturing proppant provided by the present invention comprises curing the mixture containing the aggregate particles and the coating binder, wherein the coating binder is a hydrophilic resin composition, and the hydrophilic The preparation method of resin composition comprises:

[0014] The epoxy resin is first contacted with at least one modifier having at least one proton-donating group and at least one hydrophilic group under conditions such that the ring Part of the epoxy group in the epoxy resin reacts with the proton-providing group in the modifier, the proton-providing group is an amine group, and the hydrophilic group is selected from carboxyl and sulfonic acid groups ;as well as

[0015] 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.

[0016] According to the present invention, the molecular structur...

Embodiment 1

[0058] (1) Dissolve 100g of epoxy resin (commercially purchased from Langfang Nuoerxin Chemical Co., Ltd., brand E-21, epoxy value 0.21mol / 100g) in 50g of toluene, and raise the temperature to 50°C with stirring, Then add 6.9g of p-aminobenzoic acid, stir and react at this temperature for 2 hours; then add 3.7g of triethylamine, continue the reaction for 1 hour, and remove the solvent with a rotary evaporator at a temperature of 60°C, thereby obtaining the present invention. hydrophilic resin composition.

[0059] (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 diethylenetriamine were stirred at 180°C for 3 minutes, and then the temperature was lowered to room temperature (25°C), thereby obtaining a fracturing proppant. The fracture resistance p...

Embodiment 2

[0065] (1) Dissolve 100g of epoxy resin (commercially purchased from Langfang Nuoerxin Chemical Co., Ltd., brand E-54, epoxy value 0.54mol / 100g) in 50g of toluene, and raise the temperature to 50°C with stirring, Then add 10.3g of p-aminobenzoic acid, stir and react at this temperature for 2 hours; then add 10.7g of tri-n-propylamine, continue the reaction for 1 hour, and remove the solvent with a rotary evaporator at a temperature of 60°C to obtain The hydrophilic resin composition of the present invention.

[0066] (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) and stir for 2 minutes, then add 25g Diaminodiphenylmethane was stirred at 180°C for 3 minutes, and then the temperature was lowered to room temperature (25°C), thereby obtaining a fracturing proppant. The fracture resistance properties of the fracturing proppants are...

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Abstract

The invention provides a preparation method of a fracturing propping agent, and the fracturing propping agent prepared by the preparation method. The preparation method of the fracturing propping agent comprises curing of a mixture containing aggregate particles and a laminating adhesive, and the laminating adhesive is a hydrophilic resin composition. A preparation method of the hydrophilic resin composition is as follows: performing first contact of epoxy resin and at least one modifier; and under the conditions being enough to enable an acid to from a salt, performing second contact of a mixture obtained by the first contact and at least one alkaline substance; wherein under the first contact condition, part of epoxy groups in the epoxy resin react with groups capable of providing protons in the modifier. The fracturing propping agent has high crushing resistant strength, has good dispersion in a water base fracturing fluid, and basically does not agglutinate; and the water base fracturing fluid carrying the fracturing propping agent is low in bubble content.

Description

technical field [0001] The invention relates to a preparation method of a fracturing proppant and a fracturing proppant prepared by the method. 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 crushed ceramsite in the reservoir is easy to migrate and has poor conductivity. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08G59/14C08G59/16C09K8/80
Inventor 高双之陈步宁仲晓东顾卫荣王建伟周玉生刘珊
Owner ELION RESOURCE GROUP
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