Multi-layer dispensing experimental device and method for indoor experiment

Abstract

The present invention relates to a multi-layer dispensing experimental device and a method for conducting indoor experiments, wherein the multi-layer dispensing experimental device includes an advection pump and a piston container, wherein the first advection pump is connected to the first piston container, and the first piston container holds a polymer solution, the first piston container is connected to the upper joint of the first chemical flooding dispenser through a pipeline, and the first chemical flooding dispenser is connected to the second chemical flooding dispenser through a connecting cylinder; the outlet of the first chemical flooding dispenser The liquid hole is connected to the inlet end of the first sand-filling pipe, the second advection pump is connected to the second piston container, and the second piston container is connected to the inlet end of the first sand-filling pipe; the liquid outlet of the second chemical flooding dispenser is connected to the second The inlet end of the second sand filling pipe, the third advection pump is connected to the third piston container, the third piston container is connected to the inlet end of the second sand filling pipe, and the second piston container and the third piston container are filled with distilled water. The invention can better simulate the multi-layer injection process of chemical flooding, and realize the continuous injection of variable viscosity and variable concentration of displacement fluid.

Description

technical field [0001] The invention relates to an experimental device used in the research field of oil field chemical flooding injection, in particular to a multi-layer injection experimental device and a method for performing indoor experiments. Background technique [0002] Now many oil fields have entered the late stage of high water cut development, and chemical flooding and polymer injection have been widely used for production. In the process of polymer injection, it is often encountered that the properties of formations vary widely, and the chemical flooding and injection of multiple formations will be affected at the same time. For high permeability formations, polymers need to have relatively large molecular weight and viscosity, while low permeability oil formations and Compared with medium and high permeability oil layers, it is not suitable to inject polymers with high molecular weight into the formation. For low permeability oil layers, when the ratio of pore ...

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Problems solved by technology

[0004] An object of the present invention is to provide a multi-layer split injection experimental device, which is used to solve the problem that the existing indoor chemical flooding test device cannot realize the multi-layer split injection requirements, and the use and operation are cumbersome. Another purpose of this is to provide a method for this multi-layer dispensing experimental device to carry out indoor experiments

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