Variable high-temperature high-pressure visual rock core model holding device

Abstract

The invention relates to a variable high-temperature high-pressure visual rock core model holding device used for studying the mechanism of heightening recovery efficiency in the process of oil-gas field development. The holding device is characterized in that a ceramic electrical heating rod, a temperature sensor and a return control drill way are arranged in a model cabin upper cover. Four fluid channels and a drill way exerting annular pressure are formed in a model cabin base, through holes are formed in the center of the model cabin upper cover and the center of the model cabin base, and silica glass windows are arranged in the through holes. A high-pressure sealed cabin is formed between the model cabin upper cover and the model cabin base, and a quick-connection type pitch varying model holder is arranged in the high-pressure sealed cabin and can rotate freely driven by a high-pressure quick connector. Model cabin heat preservation sleeves are sleeved outside the model cabin upper cover and the model cabin base. The holding device has the advantages that the holding device can be used for carrying out macroscopic and microcosmic visual simulation experiment studies under the oil reservoir condition, the quick-connection type pitch varying holder is variable in pitch row, model specification limits are reduced, due to the four fluid channels, evaluation experiments for a horizontal well, a straight well and other various models can be carried out, the simulation degree is high, and the application rang is wide.

Description

technical field [0001] The invention relates to a model clamping device used for the visualization of physical simulation experiments of oil and gas reservoirs in the development process of oil and gas fields, in particular to a model clamping device used for studying the mechanism and method of increasing oil recovery under special conditions such as high temperature, high pressure and low permeability. A variable-distance high-temperature and high-pressure visual core model clamping device. The specific research aspects cover the experimental mechanism research and evaluation of the performance of the fluid entering the well, the distribution of the remaining oil in the reservoir, the seepage law of homogeneous and heterogeneous reservoirs, and the influence of the reservoir deposition rhythm on the recovery degree. Background technique [0002] At present, there are only a pair of fixed visualized core model holders in the well-known high temperature and high pressure mic...

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Problems solved by technology

[0006] In order to overcome the shortcomings of the existing high-temperature and high-pressure microscopic visualization physical model holders, the distance between the sealing heads cannot be adjusted, the model is inconvenient to install, the applicable model is single, and the application limitations are large, so as

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