Foaming effect evaluation device and method for chemical agent

Abstract

The invention provides a foaming effect evaluation device for a chemical agent. The foaming effect evaluation device comprises a foaming pipe and a view window container, wherein an inlet end of the foaming pipe is connected with a gas bottle and a foaming liquid container, respectively; and a movable piston is arranged in the view window container, a foaming cavity is formed between the piston and the bottom wall of the view window container, an injection hole is formed on the bottom wall of the view window container, the foaming cavity is communicated with an output end of the foaming pipe through an injection hole, a discharging pipe is inserted into the piston, a plurality of view window holes are formed in the peripheral wall of the view window container, and observation mechanisms are arranged in the view window holes. The invention further provides a foaming effect evaluation method for the chemical agent. The foaming effect evaluation method comprises the following steps: moving the piston to set the volume of the foaming cavity; vacuumizing the foaming cavity; introducing gas and foaming liquid to enter the foaming pipe to be mixed, and injecting the gas and the foaming liquid into the foaming cavity through the injection hole for foaming; and observing the foaming height in the foaming cavity by virtue of the observation mechanisms. The volume of the foaming cavity is adjusted by moving the piston, so that the requirements on different foaming volumes of various chemical agents are met, and the evaluation of the foaming effects of the chemical agents is realized.

Description

technical field [0001] The invention relates to the field of petroleum development, in particular to a device and method for evaluating the foaming effect of chemical agents. Background technique [0002] At present, chemical agents as foaming agents are often used in the development of foam flooding in oilfields, and are widely used in the field of tertiary oil recovery in oilfield development. For the evaluation of the foaming effect of foaming chemical agents, the existing technologies use constant volume (i.e. constant volume) evaluation device and method. [0003] However, for some costly foaming agents, larger foaming containers often mean that more foaming agents need to be injected at one time to achieve high-pressure foam conditions, so the cost has a greater impact, but less Due to the high accuracy requirements such as the required dosage, and the time-consuming and long time for one experiment, the foaming container is not suitable for rapid evaluation of low-co...

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Problems solved by technology

[0003] However, for some costly foaming agents, larger foaming containers often mean that more foaming agents need to be injected at one time to achieve high-pressure foam conditions, so the cost has a greater impact, but less Due to the high accuracy requirements such as the required amount of the foaming container, and the time-consuming time of one experiment, it is not suitable for rapid evaluation of low-cost foaming agents

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