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Experiment method and device for measuring adsorption amount of nanoparticles in porous medium

A technology of nano-particles and porous media, which is applied in the direction of measuring devices, suspension and porous material analysis, scientific instruments, etc., and can solve problems such as the inability to effectively measure the adsorption capacity of nanoparticles

Active Publication Date: 2017-01-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current measurement methods cannot effectively measure the adsorption amount of nanoparticles in porous media.

Method used

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  • Experiment method and device for measuring adsorption amount of nanoparticles in porous medium
  • Experiment method and device for measuring adsorption amount of nanoparticles in porous medium
  • Experiment method and device for measuring adsorption amount of nanoparticles in porous medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, an experimental device for measuring the adsorption of nanoparticles in porous media, including advection pump 1, distilled water tank 2, nanofluid tank 3, three-way valve 4, core holder 5, back pressure valve 6, output Liquid collection tank 7 and incubator 8;

[0029] The advection pump 1 is connected with the distilled water tank 2 and the nanofluid tank 3 respectively through the three-way valve 4, and the distilled water tank 2 and the nanofluid tank 3 are respectively connected with the core holder 5, and the core holder 5 is connected to the production fluid collection tank 7 through a back pressure valve 6, and the distilled water tank 2, nanofluid tank 3, three-way valve 4, core holder 5 and back pressure valve 6 are placed in a constant temperature box 8.

Embodiment 2

[0031] An experimental method utilizing the device described in Example 1 to measure the adsorption capacity of nanoparticles in porous media, comprising the following steps:

[0032] (1) SiO with a concentration of 0.1wt%, 0.5wt%, 0.8wt%, 1wt%, and 2wt% respectively 2 nanofluids, and tested SiO at different concentrations using a UV-Vis spectrometer 2 Transmittance of nanofluids, established SiO 2 Standard curve between nanofluid concentration and transmittance, as figure 2 shown;

[0033] (2) The simulated rock core equipped with porous media is placed in the core holder 5, and the simulated rock core is evacuated through the back pressure valve 6, and the 1wt% SiO 2 The nanoparticle fluid is placed in the nanofluid tank 3, the distilled water is placed in the distilled water tank 2, the three-way valve 4 is adjusted so that the distilled water is pumped into the simulated rock core and reaches saturation, and the simulated rock core is kept at a temperature of 60 °C by ...

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Abstract

The invention relates to an experiment method and device for measuring adsorption amount of nanoparticles in a porous medium. The device comprises a flat flow pump, a distilled water tank, a nano fluid tank, a three-way valve, a rock core holder, a pressure return valve and a generated liquid collection tank, the flat flow pump is connected with the distilled water tank and the nano fluid tank through the three-way valve respectively, the distilled water tank and the nano fluid tank are connected with the rock core holder respectively, and the rock core holder is connected with the generated liquid collection tank through the pressure return valve. The experiment method includes: measuring light transmittance of nano fluids different in concentration, and drawing a standard curve between the concentration of nanoparticles and light transmittance; putting a simulated rock core in the rock core holder, and vacuumizing; pumping in distilled water, and saturating; heating the simulated rock core, maintaining temperature constant to simulated formation temperature, injecting nano fluid into the simulated rock core, detecting light transmittance of generated liquid, acquiring concentration of nanoparticles in the generated liquid according to the standard curve, and calculating adsorption amount. The experiment method and device provides important technical support to studying of adsorption of the nanoparticles in the porous medium.

Description

technical field [0001] The invention relates to a method and a device for measuring the adsorption amount of nanoparticles in porous media, and belongs to the technical field of methods for measuring the adsorption of nanoparticles. Background technique [0002] Nanofluid refers to the dispersion of nano-scale metal or non-metallic nanoparticles into traditional media such as water, alcohol, and oil to prepare a uniform and stable new medium. In recent years, with the development of nanotechnology and the increasing difficulty in the development of complex oil and gas reservoirs, nanotechnology has gradually been applied to the field of oil and gas field development, and it is becoming a research hotspot that has attracted much attention. When nanofluid is injected into porous media, nanoparticles can be adsorbed on the rock surface, which is considered to be an important mechanism for changing reservoir wettability and improving oil recovery. Therefore, studying the adsorpt...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/08G01N2015/0866G01N2015/0038
Inventor 鹿腾李兆敏周妍李健
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)