Temperature-controlled reusable two-dimensional visualization porous medium sand packed model and method of manufacture

Abstract

The invention relates to the technical field of an oil-gas field development model, and provides a temperature-controlled reusable two-dimensional visualization porous medium sand packed model, which comprises a body, a cover plate, a circulating heating pipe and a numerical control thermostatic bath. The body is made of stainless steel, and comprises a packing cavity packed with 20-200 mesh silica sand and a rectangular cavity body below. The rectangular cavity body below is provided internally with the circulating heating pipe. The circulating heating pipe is connected with the numerical control thermostatic bath through a pipeline. Two injection ports are disposed in the side wall at one side of the body, and two mining ports are disposed in the side wall at the other side of the body. The cover plate is made of an acrylic plate, covers over the body and is connected in a sealing manner with the body. The invention further provides a method of manufacture of the above model. The invention has the beneficial effects of facilitating cleaning as the body and the cover plate are independent of each other, and being reusable; presenting a more faithful reflection of oil reservoir properties as the displacement process under different temperature conditions is simulated; and having good transmission of light and visibility, and facilitating data image acquisition and processing; and having a good sealing effect as a dual sealing layer is adopted.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development models, in particular to a temperature-controllable and reusable two-dimensional visual porous medium sand filling model and a manufacturing method. Background technique [0002] At present, the physical models used to study the seepage mechanism and evaluate the effect of operation measures in the process of oil and gas field development mainly include: ① natural cylindrical core, artificial core, and the flat plate model that chooses to describe large pores or fractures and holes after secondary processing . Advantages: low cost, pressure and temperature resistance, high mechanical strength; Disadvantages: small size, cannot be visualized, cannot perform image analysis, and cannot quickly and intuitively make accurate judgments on the problems in the experimental process and experimental data; ②Glass plate Models are mostly consolidated with cement. Advantages: the displa...

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Problems solved by technology

Advantages: low cost, pressure and temperature resistance, high mechanical strength; Disadvantages: small size, cannot be visualized, cannot perform image analysis, and cannot quickly and intuitively make accurate judgments on the problems in the experimental process and experimental data; ②Glass plate model, mostly using cement consolidation

Advantages: the displacement process is visualized, and graphics processing is possible; Disadvantages: the cementation process is quite complicated, time-consuming, the model is difficult to clean, and the reuse effect is poor; ③The microscopic simulation etching model adopts photochemical etching technology, and the geometric size is small

Advantages: high precision, visualization of displacement process, image processing and analysis, good reusability; disadvantages: high production cost, no real core sandstone particle surface

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