Magnetic injection increase and depressurization test system

Abstract

The invention discloses a magnetic injection increase and depressurization test system which comprises a flow device, a drive device, a buffer device, a magnetic processing device and a constant temperature device, wherein the flow device is used for placing a test rock core and supplying ring crush to the test rock core; the drive device is used for supplying different displacement pressures or liquid flow rates to the test rock core; the buffer device is used for storing water for test, and the drive device drives the water for test to the rock core; the magnetic processing device is used for supplying different magnetic field strengths to the test rock core; the constant temperature device is used for supplying constant temperature to the test rock core; the drive device sets the displacement pressure or the liquid flow rate and drives the water for test in the buffer device to flow through the magnetic processing device, and then the water for test is pressed to the test rock core in the flow device; and the constant temperature device supplies constant temperature to the buffer device, the magnetic processing device and the flow device. With adoption of the embodiment of the invention, the rock core permeability and pressure gradient under different magnetic field strengths and different temperatures can be conveniently, rapidly and accurately measured; and the magnetic injection increase and depressurization test system can be used for researching a low permeation oil reservoir magnetic injection increase and depressurization mechanism, guiding oilfield field application and enhancing oil recovery factor.

Description

technical field

[0001] The invention relates to the technical field of magnetic treatment, in particular to a test system for studying low-permeability oilfields, in particular to a test system for studying low-permeability oilfield magnetic treatment to increase injection and reduce pressure gradient. Background technique

[0002] Effective water injection in oilfields can maintain formation pressure and is an important measure for long-term high and stable production of oil wells. At present, most oilfields use water injection to supplement formation energy, and the development effect is good. Low-permeability oilfields account for more than 60% of the existing undeveloped reserves, and the rational and efficient development of low-permeability oilfields has important strategic significance. The pore-throat structure of low-permeability reservoirs is complex, it is difficult to effectively develop water injection, the water injection pressure is high, and the water inject...

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