Visualized fracture network oil displacement model and manufacturing method thereof

Abstract

The invention discloses a visualized fracture network oil displacement model and a manufacturing method thereof. The structure of the model consists of a transparent template, a gimbal and a base, wherein the transparent template consists of an edge covering frame, a main template, a cover plate and a simulation well, wherein the main template is fracture network grooves formed by jointing matrix rock blocks; sand residue is filled in the fracture network grooves; a sealing pad is embedded between the cover plate and the main template; the edge covering frame covers the circumference of the main template and the cover plate; simulation wells represented by common valves are arranged on the upper and lower edges of the edge covering frame and on the surface of the cover plate, and the simulation wells pass through the upper and lower edges of the edge covering frame and the surface of the cover plate through threaded pipe connectors to be connected with the fracture network grooves; and the gimbal consists of a U-shaped frame, an upright post, left and right rotating components and front and back rotating components, the top end of the upright post is connected with the middle of the U-shaped frame through the left and right rotating components, and the upper end of the U-shaped frame is connected with the middle of the two sides of the edge covering frame through the front and back rotating components. The method provided by the invention can solve the problem that visualized physical experiments in a fracture network and injection well network mode cannot be performed. The method has the characteristics of simplicity, high maneuverability, effectiveness, practicality and the like, and therefore has high promotion and use value.

Description

technical field [0001] The invention belongs to the field of reservoir physics research, and relates to a large-scale visualized fracture network and an experimental model making method in the injection-production well pattern mode, that is, the experimental simulation model is designed according to the actual fracture development in the oil reservoir and the injection-production well pattern type The fracture network shape and the injection-production well pattern in the model can realistically reflect the distribution and heterogeneity of the fracture network in the actual reservoir and the influence of the injection-production well pattern on oilfield development. Background technique [0002] Field geological and core analysis studies have found that in fractured reservoirs, fractures are often very developed, and the fractures are cross-connected and distributed in a network, with strong heterogeneity and complex fluid flow characteristics. At present, small-scale fract...

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Problems solved by technology

At present, small-scale fractured cores or microscopic thin-section models are mainly used for relevant experimental research, and it is difficult to reflect the influence of network fracture distribution and injection-production well pattern on reservoir development

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