Foam property measuring device and method for oil extraction

Abstract

The invention provides a foam property measuring device for oil extraction. The device comprises a shaft simulation system for simulating movement of foam in a shaft, a foam injection system for injecting the foam into the shaft simulation system, and a foam measuring system for measuring the foam properties. The shaft simulation system comprises a vertical pipeline, a porous medium and a heating sleeve, multiple measuring points are arranged on the vertical pipeline at intervals, each measuring point is connected to a foam measuring container of the foam measuring system through a porous medium container, and the heating sleeve is arranged outside the foam measuring container. By means of the device, the foam is injected into different oil layers in a simulated mode through the shaft simulation system, and the temperature difference between the oil layers is simulated through the heating sleeve; the foam measuring system measures the properties of the foam for simulating different temperatures and different oil layer conditions and foam shunt volumes, liquid shunt volumes and gas shunt volumes corresponding to all the simulated oil layers; a computer is adopted for automatically controlling the device, the experimental process is safe and reliable, and the labor cost is reduced.

Description

technical field [0001] The invention belongs to the field of petroleum engineering and process technology, and in particular relates to a device and method for measuring foam properties for oil recovery. The device can simulate the foam properties when the foam is injected into the underground target oil layer, and measure the foam in different layers, temperatures and / or interstitial media Stability and flow under certain conditions. Background technique [0002] All major oil fields in my country are in the late stage of water flooding, but more than half of the geological reserves of oil still remain underground. It is necessary to carry out effective tertiary oil recovery technology, which can increase my country's oil production by 10%-20%. Chemical flooding technology is the most widely used and most mature technology in tertiary oil recovery. The main reason why foam flooding has the effect of profile control and oil displacement is the seepage characteristics of foa...

AI Technical Summary

Problems solved by technology

[0003] Nowadays, in most of the reports on the quantitative measurement of the foam performance of the foaming agent system, only the foam foaming and foam stabilization properties of the foam are measured, and there is no report on the relevant measurement method of the corresponding foam when it is injected into the target oil layer

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