Measuring method for performance of foaming agent

Abstract

The invention belongs to the technical field of petroleum industry, relates to a measuring method for performance of foaming agent, specifically relates to measurement of high temperature performance of foaming agent. By measuring the foam volume and half-life of the foaming agent under different temperature conditions, the method obtains average foam comprehensive index as the measurement result of the foaming performance and foam stabilizing performance of the foaming agent; on this basis, by measuring the resistance factor of the foaming agent under different temperatures conditions, an average foam resistance factor is obtained to be used as the measurement result of the sealing and blocking performance of each foaming agent. The method can objectively measure the foaming performance, foam stabilizing performance and sealing and blocking performance of the foaming agent under varying temperature conditions, thus realizing the optimal selection of the foaming agent used for blocking and profile adjusting under high temperature vapor conditions on the site of oil field.

Description

technical field [0001] The invention belongs to the technical field of the petroleum industry, and relates to a method for measuring the performance of a foaming agent, in particular to a method for measuring the high-temperature performance of the foaming agent. Background technique [0002] Foam is a dispersion system formed by dispersing the gas phase in the liquid phase. This dispersion system is generally very unstable, and the stability of the foam generated by the liquid containing surfactant will be greatly enhanced. Foam systems are widely used in foam flooding in petroleum development, foam separation in environmental protection, foam flotation in metallurgical industry, fire extinguishing, daily cosmetics, food, etc. [0003] At present, there is no unified standard for the determination of foaming performance and foam stabilizing performance of high-temperature foaming agents. At home and abroad, the Waring Blender method or the Ross-Milles method is generally u...

AI Technical Summary

Problems solved by technology

This method can also be extended to the determination of the resistance factor of the foam at a high temperature of 300 ° C, but it cannot be determined for the resistance factor of the foam in the porous medium during the temperature change process

Therefore, the resistance factor at a single temperature point cannot objectively measure the high-temperature plugging ability of the blowing agent during the actual temperature change process.

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