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Device and method for determining migration resistance of single bubble in pore

A technology of bubbles and pores, which is applied in the field of foam flooding test, can solve the problems such as the inability to measure the resistance of a single bubble, and achieve the effects of low manufacturing cost, good stability and accurate data

Active Publication Date: 2019-02-19
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent cannot measure the resistance of a single bubble passing through a single pore-throat structure, and cannot solve the above problems

Method used

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  • Device and method for determining migration resistance of single bubble in pore

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like figure 1 As shown, a device for measuring the migration resistance of a single air bubble in a pore includes a support platform 1, a lifting rod 2 and a pore throat unit 3 are arranged on the support platform 1, and a pore throat 4 is arranged in the pore throat unit 3. The rod 2 is provided with a water container 5, the upper end of the water container 5 communicates with the atmosphere, the lower end of the water container 5 communicates with the pore throat 4 through an infusion tube 6, and the infusion tube 6 is provided with a foaming tube 7 for foaming The tube 7 communicates with the infusion tube 6, the foam tube 7 is provided with an air pump 8, and one end of the pore throat 4 communicates with the atmosphere. The air pump 8 is arranged on the support platform 1 . The air pump 8 can input gas into the foaming tube 7, and when the gas enters the foaming tube 7, it mixes with the liquid to be tested to generate bubbles. By adjusting the height of the lift...

Embodiment 2

[0036] A method for measuring the migration resistance of a single air bubble in a pore, using the above-mentioned device for measuring the migration resistance of a single air bubble in a pore, comprising the following steps:

[0037] a. Preparation before measurement: install the experimental device in place, add the liquid to be tested in the water container 5, the liquid to be tested is filled with the infusion tube 6, and when the liquid level in the water container 5 is greater than the 0 scale line, lift the lifting rod 2 down to a low level;

[0038] b. Inflation: turn on the air pump 8 to make the gas enter the foam tube 7, the bubbles to be generated move to the entrance of the pore throat 4, and close the air pump 8;

[0039] c. Adjust the lifting rod 2: slowly adjust the position of the lifting rod 2 until the air bubbles are deformed by the pressure difference of the solutions on both sides and pass through the pore throat 4;

[0040] d. Record data: record the h...

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Abstract

The invention discloses a device and a method for determining the migration resistance of a single bubble in a pore. The device comprises a support table. A lifting rod and a pore throat unit are arranged on the support table. A pore throat is formed in the pore throat unit. A water container is arranged on the lifting rod. The upper end of the water container is communicated with the atmosphere,and the lower end of the water container is communicated with the pore throat through a liquid delivery pipe. A foaming pipe is arranged on the liquid delivery pipe. The foaming pipe is communicated with the liquid delivery pipe. An air pump is arranged on the foaming pipe. One end of the pore throat is communicated with the atmosphere. According to the experiment device and the method for determining the resistance of the single bubble passing through a single pore throat, the experiment device and the determination method is simple, the determined data is accurate, and the like.

Description

technical field [0001] The invention relates to the technical field of foam flooding tests, in particular to a device and method for measuring the migration resistance of a single bubble in a pore. Background technique [0002] Foam flooding is the technology with the highest resistance coefficient among the currently tested EOR methods. Foam fluid has high apparent viscosity and good plugging performance, but because foam is a highly dispersed and unstable system, reservoir conditions have many influence factors on system performance, and most foam flooding seepage models regard foam as For single-phase non-Newtonian fluids, the performance of foam is closely related to the characteristics of porous media, but the current research does not consider the interaction between foam and pore throats, as well as the dispersion and instability of foam in formation porous media. Most studies on foam migration characteristics are based on core displacement experiments, which do not ...

Claims

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Application Information

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IPC IPC(8): G01N13/00
CPCG01N13/00
Inventor 殷丹丹赵东锋
Owner ZHEJIANG OCEAN UNIV
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