Simulation physical model capable of visualizing different fracture network forms and manufacturing method

Abstract

The invention provides a simulation physical model capable of visualizing different fracture network forms and a manufacturing method. The simulation physical model comprises an etched glass mother plate and a smooth glass accessory plate, the two plates are both square and are mutually bonded to form a cube, an injection port and an extraction port are formed in a plate body of the smooth glass accessory plate, the injection port and the extraction port are communicated with an embedded nano-scale pore network structure of the etched glass mother plate, and the pore network structure at least comprises different fracture network forms. According to the simulation physical model capable of visualizing different fracture network forms, the pore structure and different fracture forms of a tight oil reservoir core are truly simulated, the pore size and shape can be autonomously designed, simulation research of reservoir microcosmic parameters under the nano-micron size is simulated, the manufactured simulation physical model can bear microcosmic seepage research at 60 DEG C or below and 6 MPa or below, the requirement for high-temperature and high-pressure experiments is met, in addition, the smooth glass accessory plate in the simulation physical model can be separated from the etched glass mother plate, and therefore the accessory plate can be reused.

Description

technical field [0001] The invention belongs to the technical field of real microcosmic mechanism research of tight oil reservoirs, and in particular relates to a simulation physical model and a manufacturing method for visualizing different fracture network forms. Background technique [0002] In recent years, due to the rapid development of tight oil reservoirs, the production of tight oil reservoirs will become more and more important in reservoir engineering, and will have important strategic significance for the development of tight oil reservoirs. Therefore, the study of fluid seepage in porous media The problem is of great significance to the development of underground fluid resources such as oil and gas. At present, the research on the seepage problem in the micro model mainly includes: [0003] (1) Taking artificial core or artificial geological model as the research object, although the cost is low and the processing is simple, the error is large, and the driving p...

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Problems solved by technology

[0003] (1) Taking artificial core or artificial geological model as the research object, although the cost is low and the processing is simple, but the error is large, the driving process of oil, gas, water and other fluids cannot be observed, and it cannot meet the needs of current oilfield development

[0004] (2) The existing porous media models, such as microcapillary network model, quartz sand interlayer model and simulated pore structure model, all use real cores as the main body. Acquisition and analysis of images, but the production methods are complicated, the production cost is high, the production accuracy is poor, and the size of the pore network structure is uncontrollable

[0005] ③ For the existing porous media model made of epoxy resin bonding, the model made has good transparency and strong visibility, and can clearly observe the microscopic seepage process in the model, but the model has poor precision and uncontrollable size. Poor bonding ability, no pressure resistance, low success rate, cannot meet the nanoscale pore size requirements of tight oil fields, and cannot meet the research on microscopic parameters of reservoirs

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