Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of organic porous nanoparticle-enhanced clean fracturing fluid and its preparation method

A clean fracturing fluid and nanoparticle technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve problems such as damage to reservoirs, clogging of rock pores, and impact on oil and gas production, so as to improve viscoelasticity, Improves stability and strength, and enriches the pore structure

Active Publication Date: 2020-10-09
成都与盛能源科技股份有限公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the nano-materials mainly used in the existing nano-composite fracturing fluids are inorganic nano-materials such as silicon dioxide, calcium carbonate, titanium dioxide, and alumina. This type of nano-materials has high strength and no deformation ability. Therefore, it is easy to cause irreversible plugging of rock pores and damage the reservoir
Moreover, the dense filter cake formed by such nanomaterials in fractures will also affect the entry of oil and gas in the rock matrix into fractures, thereby affecting the production of oil and gas.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of organic porous nanoparticle-enhanced clean fracturing fluid and its preparation method
  • A kind of organic porous nanoparticle-enhanced clean fracturing fluid and its preparation method
  • A kind of organic porous nanoparticle-enhanced clean fracturing fluid and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The mixed solution of 9.5g 4-vinyl benzyl chloride and 0.5g divinylbenzene was added dropwise into 100g deionized water dissolved with 0.15g sodium lauryl sulfate, while stirring and emulsifying at a speed of 400 rpm, 4 -After the addition of the vinyl chloride benzyl chloride and divinylbenzene mixture is completed dropwise, continue to stir and emulsify for 1 hour. After the emulsification is completed, pass nitrogen gas to deoxygenate for 15 minutes and raise the temperature of the emulsion to 80° C. and add 5 g of potassium persulfate in water to initiate the reaction. The mass concentration of the potassium sulfate aqueous solution was 2%, and the stirring rate was kept at 400 rpm during the reaction, and the reaction was completed after 10 hours. Adding ethanol to the reacted emulsion to break the emulsion, and then centrifuging to separate the crosslinked nanospheres, washing the crosslinked nanospheres with water and ethanol three times and then drying to obtain ...

Embodiment 2

[0050] The mixed solution of 9.8g 4-vinyl benzyl chloride and 0.2g divinylbenzene was added dropwise into 100g deionized water dissolved with 0.6g sodium lauryl sulfate, while stirring and emulsifying at a speed of 500 rpm, 4 - After the addition of the vinyl chloride benzyl chloride and divinylbenzene mixture is completed, continue to stir and emulsify for 1 hour. After the emulsification is completed, pass nitrogen gas to deoxygenate for 15 minutes and raise the temperature of the emulsion to 80° C. and add 6 g of potassium persulfate in water to initiate the reaction. The mass concentration of the potassium sulfate aqueous solution was 2%, and the stirring rate was kept at 400 rpm during the reaction, and the reaction was completed after 10 hours. Adding ethanol to the reacted emulsion to break the emulsion, and then centrifuging to separate the crosslinked nanospheres, washing the crosslinked nanospheres with water and ethanol three times and then drying to obtain the cross...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an organic porous nanoparticle enhanced clean fracturing fluid and a preparation method thereof. The fracturing fluid comprises the following components in percentage by mass:1-5% of a surfactant, 1-5% of a counter ion auxiliary agent, 0.05 to 3 percent of organic porous nanometer particles, and balance of water. The preparation method comprises the following steps of adding the surfactant into the water, stirring and dissolving, then adding the organic porous nanoparticles into a surfactant solution, then carrying out ultrasonic dispersion until the organic porous nanoparticles are uniformly dispersed in the surfactant solution so as to obtain a nanofluid containing the organic porous nanoparticles; and adding the counter ion auxiliary agent into the nanofluid, uniformly mixing, and standing the mixed solution for 3-6 hours to obtain the organic porous nanoparticle enhanced clean fracturing fluid. The organic porous nanoparticle enhanced clean fracturing fluidprovided by the invention does not block rock pore throats, and a reservoir is not damaged while viscoelasticity, temperature resistance and shear resistance of the clean fracturing fluid are improved.

Description

technical field [0001] The invention relates to the technical field of oil field chemistry in oil reservoir reconstruction technology, in particular to an organic porous nano particle enhanced clean fracturing fluid and a preparation method thereof. Background technique [0002] Hydraulic fracturing is a widely used reservoir stimulation technology in the development of oil and gas fields. It can form fractures with high conductivity around the wellbore, reduce the seepage resistance of fluid near the wellbore, increase the drainage area of ​​oil and gas wells, and improve oil and gas production capacity. well production. In recent years, with the increasing proportion of unconventional oil and gas resource reserves such as shale gas and tight oil, hydraulic fracturing has gradually become an indispensable production increase measure for oil and gas resource exploitation. As the core working fluid in the hydraulic fracturing process, fracturing fluid has important functions...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/68
CPCC09K8/602C09K8/665C09K8/68C09K8/882C09K2208/10
Inventor 杨洋范宇张浩杨斌郭芸菲章江王浩
Owner 成都与盛能源科技股份有限公司