A visual sandblasting model for oil displacement experiments and its manufacturing method

Abstract

The present invention relates to a visual sandblasting model for oil displacement experiments and a manufacturing method thereof, wherein the visual sandblasting model for oil displacement experiments includes a glass slide, a glass cover, and the center of the inner surface of the glass slide is set There is a square groove to accommodate the quartz sand cement layer. The quartz sand cement layer is made of compressed air to carry the cement preparation and quartz sand, and is sprayed by high-speed gas into the square groove in the glass slide. The thickness of the quartz sand cement layer is the same as the square groove of the glass slide. The depth of the shaped groove is the same; the size of the glass cover is the same as that of the glass slide, and the glass cover and the glass slide are bonded and formed by silicone sealant; the injection and production ports designed according to the well pattern run through the glass cover and the quartz sand cementation layer. The sandblasting process of the invention completely overcomes the shortcomings of channeling on the surface of various models, and can realize uniform permeability and uniform thickness of a single layer of sandblasting layer.

Description

technical field [0001] The invention relates to a model used for studying physical displacement effects and evaluating various chemical additives in the process of oil and gas field development, in particular to a visual sandblasting model for oil displacement experiments and a manufacturing method thereof. Background technique [0002] At present, the models used to study the physical displacement effect and evaluate various chemical additives in the process of oil and gas field development mainly include: ① Natural cylindrical cores drilled from formations and artificial strip and slab cores are currently widely used in indoor An important means of physical simulation. The advantages are: high mechanical strength, can withstand high temperature and high pressure, and low cost. The disadvantages are: the displacement process is not visible, image analysis cannot be performed, and problems in the experiment cannot be accurately judged in real time; ②The microscopic glass et...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a visual sandblasting model for oil displacement experiments, which is used to solve the problem of difficult control of the permeability and glass Or the problem of easy channeling on the inner surface of the plexiglass flat model; another object of the present invention is to provide a method for making this visual sandblasting model for oil displacement experiments

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