Low-frequency resonance wave assisted gel plugging performance evaluation testing device and method

Abstract

The invention relates to a low-frequency resonance wave assisted gel plugging performance evaluation testing device and method. The low-frequency resonance wave assisted gel plugging performance evaluation testing device comprises a low-frequency resonance wave test bed for producing low-frequency resonance, a core barrel which is arranged on the low-frequency resonance wave test bed and comprises an inlet, an outlet and a ring pressure opening, a liquid container connected with the outlet, and a ring pressure supply part connected with the ring pressure opening; the device also comprises a displacement pump, a middle water delivery container, a middle oil delivery container and a middle gel delivery container, the middle water delivery container, the middle oil delivery container and the middle gel delivery container are connected with one another in parallel, and the outlet of the displacement pump is connected with the inlet of the core barrel by the middle water delivery container, the middle oil delivery container and the middle gel delivery container. The low-frequency resonance wave assisted gel plugging performance evaluation testing device has high research and application values, gives good research guidance for low-frequency resonance wave combined profile control and displacement and profile control technology development and application, and contributes to improving the later production condition in oil field development and improving the oil field flooding efficiency.

Description

technical field [0001] The invention relates to the field of petroleum technology, in particular to a low-frequency resonance wave assisted gel plugging performance evaluation test device and method. Background technique [0002] Low-frequency harmonic wave oil recovery and chemical control and flooding are oil recovery technologies for improving secondary and tertiary oil recovery. Low-frequency harmonic wave oil recovery uses the propagation of acoustic physical fields to cause physical and chemical changes in oil layers and fluids, thereby improving seepage conditions in oil layers and achieving the purpose of increasing production and injection of oil and water wells; chemical control and flooding technology uses injection of chemicals in injection wells to achieve plugging Subsurface reservoir channeling and increased subsequent water actuation. Since the high-power harmonic wave oil recovery technology is used alone, the enhanced oil recovery range is small, but the a...

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Problems solved by technology

However, the application effectiveness of the combined application of the two technologies is basically still at the stage of conjecture and understanding, and there are deficiencies in theoretical research and field tests on the effect of low-frequency resonance wave-assisted gel control, flooding and plugging to enhance oil recovery. In particular, there is a lack of high-precision and high-stability indoor simulation test conditions, devices and effective test methods

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