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Dispersion method of nanomaterials in clean fracturing fluid

A technology for cleaning fracturing fluid and nanomaterials, which is applied in the field of dispersion of nanomaterials in clean fracturing fluids. It can solve problems not involved in the dispersion of nanomaterials, and achieve dust-avoidance, strong field operability, and simple dispersion methods. Effect

Active Publication Date: 2016-04-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the above-mentioned documents involve the dispersion of nanomaterials in clean fracturing fluids.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Nano MgC 2 o 4 Dispersion method in clean fracturing fluid: 0.0065g of nano-MgC with a particle size of 11.8nm 2 o 4 Add the powder into 1ml of glycerol (n=3), stir magnetically for 30 minutes, then add 40ml of clean fracturing fluid aqueous solution containing viscoelastic surfactant with a concentration of 0.1wt%, and continue stirring for 30 minutes to obtain nano-MgC 2 o 4 Associate clean fracturing fluid systems. It is a non-settling milky white solution with good dispersibility.

Embodiment 2

[0019] Nano-Al(OH) 3 Dispersion method in clean fracturing fluid: 0.18g of nano-Al(OH) with a particle size of 37.8nm 3 Add it into 5ml of butanetriol (n=4), stir it magnetically for 30 minutes, then add 40ml of a clean fracturing fluid aqueous solution containing a viscoelastic surfactant with a concentration of 1wt%, and continue stirring for 30 minutes to obtain nano-Al(OH) 3 Associate clean fracturing fluid systems. It is a non-settling milky white solution with good dispersibility.

Embodiment 3

[0023] Nano γ-Al 2 o 3 Dispersion method in clean fracturing fluid: 0.63g of nanometer γ-Al with a particle size of 18.7nm 2 o 3 Add it into 10ml of hexanetriol (n=6), stir it magnetically for 30 minutes, then add 40ml of clean fracturing fluid aqueous solution containing viscoelastic surfactant with a concentration of 2wt%, and continue stirring for 30 minutes to obtain nano-γ-Al 2 o 3 Associate clean fracturing fluid systems. It is a non-settling milky white solution with good dispersibility.

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Abstract

The invention provides a method for dispersing nanometer materials in a clean fracturing fluid, the nanometer materials are added into dispersing auxiliary liquid triatomic alcohol, and then the solution is mixed with the clean fracturing fluid. The nanometer materials include but not limited to MgC2O4, Al(OH)3, gamma-Al2O3, SiO2, TiO2 and ZnO. The nanometer materials and the dispersing auxiliary adopted by the invention are materials and reagents which are non-toxic and environmentally friendly, and may not cause secondary pollution. According to the method, the nanometer materials are pre-dispersed in the dispersing auxiliary to avoid dust phenomenon, the self agglomeration problem of the ultrafine nanometer materials is solved, and the method is favorable to the transportation and operation of powder materials in the on-site application processes in oil fields; in addition, the method for dispersing is simple, has strong on-site operation property, and has broad application prospects in the development of oil and gas fields and especially in the development of nanometer material associated clean fracturing fluid.

Description

technical field [0001] The invention relates to the establishment of a method for dispersing several nanometer materials in clean fracturing fluid. Background technique [0002] Hydraulic fracturing technology has played an important role in the exploitation of oil and gas fields, and is the main technology for increasing single well production in low-permeability and ultra-low-permeability reservoirs. Clean fracturing fluid without residue has little damage to propped fractures and formations, and is the development trend and hot spot of fracturing fluid research at home and abroad. With the deepening of oil and gas exploration and development in deep and ultra-deep wells, the thermal shear viscosity of conventional fracturing fluid systems decreases too quickly at high temperatures, which cannot meet the requirements of fracturing reconstruction in ultra-deep wells. The key to the progress of the cracking process. Nanomaterials and technology are the cutting-edge technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/68
Inventor 王宝峰黄静王淑荣薛承瑾蒋廷学陈作张保平魏娟明
Owner CHINA PETROLEUM & CHEM CORP
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