Device for Measuring Permeability of High Temperature and High Pressure Foam Liquid Film and Its Application Method

Abstract

A method for measuring the permeability of foam liquid film and its application method, comprising a device body, a bubble generator, an observation tube, an observation container, a liquid storage tank, a rotating motor, a first air source, a second air source and a digital microscope, and the bubble generation A high temperature and high pressure resistant airtight system composed of a device, an observation tube, and an observation container is installed in the device body. Under the joint action of the rotating motor, liquid storage tank, first air source, and second air source, air bubbles are generated in the airtight system to form a liquid film. Permeability experiments, and the experimental data collected by digital microscopes for the study of the permeability mechanism of liquid films; bubbles are generated by a specific bubble generator and introduced into special observation equipment to realize the monitoring of bubbles under real conditions. Surfactant The precise and clear observation records of the permeation process in the liquid film of the solution provide experimental equipment and data support for the study of the permeation ability of the foam liquid film and further guide the development of foam as a plugging agent and displacement fluid in enhanced oil recovery .

Description

technical field [0001] The invention relates to the technical field of theoretical experimental equipment for foam flooding in enhanced oil recovery, in particular to a device for measuring the permeability of a foam liquid film under high temperature and high pressure and a method for using the same. Background technique [0002] In oil field development, oil reservoirs rely on their own energy and artificial replenishment methods such as water injection and gas injection to extract crude oil. The oil and gas resources in the reservoir have not been exploited yet, and the pore structure of this kind of reservoir is complex, and the permeability is extremely low. The seepage area is not easy to mine due to capillary force, viscous force and other forces. After entering the era of tertiary oil recovery, methods such as chemical flooding, steam flooding, microbial flooding, and thermal recovery are often used to improve the sweep efficiency and increase the oil displacement a...

AI Technical Summary

Problems solved by technology

[0008] In addition, as far as the same type of devices in the industry are concerned, most of the foam flooding evaluation devices widely used at present are to study the properties of foam from the results, that is, to evaluate the foam flooding effect through the actual effect of foam flooding in the core. The ability of oil agents, the research process focuses on actual results and applications, lacks elements for basic theoretical research, and often can only draw single and specialized research conclusions for the research objects supported by experiments, and it is difficult to obtain universal and applicable results. law

However, the experimental device that can systematically study the permeability and mechanism of the foam liquid film under the formation conditions in the real environment has not yet been applied.

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