High temperature and high pressure dynamic acid rock reaction fast experimental device and method

Abstract

The invention discloses a rapid high-temperature high-pressure dynamic acid rock experiment device and a rapid high-temperature high-pressure dynamic acid rock experiment method. The rapid high-temperature high-pressure dynamic acid rock experiment device comprises a liquid storage tank, a first magnetic stirrer, multiple reaction tanks, multiple second magnetic stirrers, and a temperature control component, wherein the first magnetic stirrer is used for stirring the liquid storage tank; the multiple second magnetic stirrers correspond to the reaction tanks one by one; the temperature control component is used for performing temperature control on the reaction tanks and the liquid storage tank. The rapid high-temperature high-pressure dynamic acid rock experiment device also comprises a control component, wherein the control component comprises first pipelines and second pipelines which are communicated with the liquid storage tank and each reaction tank; a first valve and a second valve are arranged on each first pipeline; a pressurization source is arranged between each first valve and the corresponding second valve; and the first valves and the second valves are opened at intervals. According to the device and the method disclosed by the invention, the test results can be rapidly and accurately obtained.

Description

technical field [0001] The invention relates to a test device and method, in particular to a high-temperature and high-pressure dynamic acid-rock reaction rapid test device and method. Background technique [0002] Acidizing acid fracturing is one of the commonly used effective measures for oil and gas reservoir stimulation. It injects acid liquid into the formation through the wellbore, uses the chemical reaction between acid and some minerals in the formation, dissolves the connected pores or fracture wall rocks in the reservoir, increases the conductivity of pores and fractures, and realizes oil and gas well stimulation. Purpose. In the acidizing process, too fast or too slow acid-rock reaction rate is not good for oil and gas production increase. To achieve high-efficiency acidizing acid fracturing, controlling the appropriate acid-rock reaction rate is one of the important technical means. To control the appropriate acid-rock reaction rate, it is necessary to simulate...

AI Technical Summary

Problems solved by technology

The static test method does not consider the relative motion between the acid liquid and the rock reaction surface in the actual acidizing and acid fracturing process, that is, the solid-liquid reaction has dynamic characteristics, so the experimental results are poor in guiding the actual acidizing and acid fracturing construction

The rotating rock plate test method can simulate the dynamic characteristics of the acid-rock reaction in the actual acidizing and acid fracturing process. The experimental results have strong guidance for the actual acidizing and acid fracturing construction. However, due to the complicated operation and only a single reaction tank system, the experimental efficiency is relatively low. low, and it is difficult to study the acid-rock reaction of sandstone, which brings inconvenience and inefficiency to the study of acid-rock reaction

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