Method of pumping vacuum and saturating formation water with three-dimensional scale model for microbial flooding

Abstract

The invention belongs to the technical field of petroleum industry and particularly relates to methods for vacuumizing and saturating formation water of a three-dimensional scale model for microbial oil displacement. The methods comprise the automatic vacuumizing method and the automatic formation water saturating method. The automatic vacuumizing method comprises the step that a control unit controls a vacuumizing unit to conduct sequential and circular vacuumizing on simulation wells of the three-dimensional scale model. The automatic formation water saturating method comprises the steps that the control unit controls a formation water saturating unit to conduct sequential formation water saturating on the simulation wells of the three-dimensional scale model. The methods have the characteristics of being simple, high in automation degree, high in operability, safe and reliable. Meanwhile the vacuum degree of the three-dimensional scale model at the time of vacuumizing and the degree of uniform distribution of the formation water in the model at the time of formation water saturating are improved, and accordingly the accuracy and reliability of a microbial oil displacement physical simulation experiment result are improved. Therefore, the methods can be widely applied to experiments of vacuumizing and saturating the formation water of the three-dimensional scale model for microbial oil displacement.

Description

technical field [0001] The invention belongs to the technical field of petroleum industry, and in particular relates to a method for vacuuming and saturating formation water with a three-dimensional proportional model for microbial oil displacement. Background technique [0002] The physical simulation of microbial flooding is a common method for studying microbial flooding reservoirs. The physical simulation experiment of microbial flooding artificially reproduces the development process of microbial flooding reservoirs, more realistically simulates the seepage characteristics of actual reservoirs or oil wells, and studies reservoir parameters. , well geometry factors and external production controllable parameters on the development effect provide an important basis for formulating microbial flooding reservoir development strategies, countermeasures at different development stages, and oil stabilization and water control programs. The physical simulation of microbial flood...

AI Technical Summary

Problems solved by technology

The above method of saturating the formation water is likely to lead to uneven distribution of formation water in the sand filling model and insufficient saturation of formation water, and the time of saturation of formation water is long and the efficiency is low

The current method of vacuuming and saturating formation water not only has low work efficiency, low degree of automation, and high labor intensity, but also the accuracy and reliability of the results of microbial flooding physical simulation experiments are not high.

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