Multi-phase permeameter and rock permeability determination method

A technology of permeameter and carbon dioxide, applied in the field of multiphase permeameter, can solve the problems of manpower waste, gas condensation, influence of gas and liquid quantity, etc., and achieve the effects of reducing experimental error, convenient operation, and accurate and reliable results.

Inactive Publication Date: 2015-09-09
HOHAI UNIV
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Problems solved by technology

[0004] The gas-liquid separators of this kind of existing indoor experimental instruments that can be used for carbon dioxide displacement of salt water are all set outside the simulation system. The amount of gas and liquid will affect the
Domestic experimental instruments generally measure balance readings manually, but for experiments with a long experimental period, manual observation will lead to waste of manpower

Method used

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  • Multi-phase permeameter and rock permeability determination method
  • Multi-phase permeameter and rock permeability determination method
  • Multi-phase permeameter and rock permeability determination method

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Embodiment

[0027] Such as figure 1 Shown is the core holder. The structural skeleton material is steel. Apply ring pressure to the holder through the water injection pipe 1, release the air between the rubber sleeve 6 and the steel pipe 5 of the holder through the exhaust valve 2, add rock cores to the inner chamber 8 of the holder, and close the holder with a nut 3 , use the fluid inlet pipe 4 to inject fluid, and the fluid outflow pipe 7 to discharge the displaced fluid. The diameter of the inner chamber of the holder is 50mm, and a rock core with a diameter of 50mm and a length of no more than 200mm can be added.

[0028] Such as figure 2 As shown, it is a constant temperature box. The structural skeleton material is a composite material. The main part of the displacement experiment is carried out in the inner chamber 14 of the thermostat, the air in the thermostat is heated by the heater 11, the heated air is circulated in the gas circulation chamber 13 by the fan 9, and the te...

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Abstract

The invention discloses a multi-phase permeameter and a rock permeability determination method. The multi-phase permeameter comprises an injection system, a cooling system, a model system, a metering system, an automatic control system, a pressure return system, a vacuum pumping system and a data acquisition and processing system, wherein the injection system is used for injecting carbon dioxide and liquid; the cooling system, the automatic control system, the pressure return system, the vacuum pumping system and the model system are used for simulating formation conditions; and the metering system and the data acquiring and processing system are used for date statistic measurement. The method comprises experiments of vacuum pumping, core saturation and displacement, wherein injection rate and injection pressure are changed by an injection pump, so that parameters required for the permeation experiment can be acquired, and salt precipitation capacity generated by desiccation effect can be measured. According to the invention, the operation is simple, automatic control, acquisition and handling by using a computer are realized, and limitations and defects of conventional experimental apparatuses and methods can be overcome.

Description

technical field [0001] The invention relates to a device and a method for testing rock permeability, in particular to a multiphase permeameter and a method for measuring rock permeability characteristics in a carbon dioxide geological storage project in a deep saline layer. Background technique [0002] Sequestering carbon dioxide in deep saline aquifers is considered an effective way to mitigate climate warming. When carbon dioxide is injected into the deep saline layer, because the buried depth is greater than 800m, the pressure and temperature of the saline layer exceed the critical value (7.38MPa, 31.1°C). Therefore, the corresponding formation environment must be simulated in the laboratory to simulate carbon dioxide displacement of saline water . [0003] After searching, the Chinese patent document CN 104132881A discloses a reservoir seepage medium multiphase fluid fracturing-seepage gas-liquid separation experimental system, including a frame; a lifting mechanism is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 王媛任杰冯迪刘阳吴跃胡叶军
Owner HOHAI UNIV
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