A special large-diameter sand filling model device and method for physical simulation experiments

Abstract

The invention discloses a specially-prepared large-diameter sand filling model device for physical simulation experiments and a method thereof, wherein the device includes a model pipe body; the modelpipe body comprises a main pipe body; the main pipe body is a cut-through pipe body, the left end and the right end of the main pipe body are respectively blocked with a left pipe end seal cover anda right pipe end seal cover; the inner end face of the left pipe end seal cover is provided with a left screen pressing plate, and a coarse screen and a fine screen are respectively mounted between the inner end face of the left pipe end seal cover and the left screen pressing plate; a right screen pressing plate is mounted at an inner end face of the right pipe end seal cover, and a coarse screenand a fine screen are respectively mounted between the inner end face of the right pipe end seal cover and the right screen pressing plate; the main pipe body is provided with a simulation injection-production well hole or a pressure measuring hole. The device and the method not only can simulate the edge-bottom water characteristics of an actual oil reservoir, but also can simulate the artificial gas-cap drive characteristics of a mine field.

Description

technical field [0001] The invention relates to a sand-filling model, in particular to a special large-diameter sand-filling model device and method for physical simulation experiments. Background technique [0002] In the process of oil and gas field development, reservoir physical simulation experiments have always been an important means for petroleum scientists to understand and master the law of oil-water seepage in reservoirs, and how to improve the similarity between laboratory experiments and mine field simulations has always been a difficult problem for researchers to seek breakthroughs . In consideration of safety and cost, the application of relevant technologies first obtains the required data through experiments with sand-packing models, especially for complex fault-block reservoirs, which require a combination of various means or technologies to improve recovery, such as injection-production coupling, edge Water flooding, gas-water dual flooding, etc., put for...

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Problems solved by technology

Some achievements have been made, but there are still some problems: in the water flooding experiment, on the one hand, the flat sand filling model has serious problems of insufficient compaction and "water channeling", on the other hand, the compressive strength is not high, and it cannot simulate the edge well. Bottom water, which limits the simulation of field conditions, the experimental plan adjustment area is narrow; gas drive experiments, the most important feature is the high pressure requirements, with a certain inclination, so the model is generally small

[0005] After searching, no published documents with the same structure as this application were found

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