Method for acquiring ratio of amount of free gas to amount of adsorbed gas in methane, system therefor and terminal equipment
A method for obtaining methane, a technology for methane, which is applied in the field of obtaining the ratio of methane to suction, which can solve problems such as inaccurate suction ratio, and achieve the effect of accurate calculation results and avoiding disturbance and influence.
Active Publication Date: 2018-12-25
CHINA UNIV OF GEOSCIENCES (BEIJING)
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[0004] In view of this, the embodiment of the present invention provides a method, system and terminal equipment for obtaining the free suction ratio of methane, so as to solve the problem of the obtained free suction ratio in the prior art due to the disturbance and influence of engineering uncontrollable factors. inaccurate question
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[0026] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
[0027] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other features. , whole, step, operation, element, component and / or the presence or addition of a collection thereof.
[0028] It shou...
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The invention is applicable to the technical field of unconventional natural gas, and discloses a method for acquiring a ratio of the amount of free gas to the amount of adsorbed gas in methane, a system therefor and terminal equipment. The method comprises the following steps of: acquiring experimental data of a methane isothermal adsorption experiment; acquiring the concentration of the methanein a free state at a first moment, wherein the first moment is any moment in the methane adsorption process; respectively acquiring a first adsorption state methane mass and a first methane total massin a sample at the first moment based on the concentration of the methane in the free state at the first moment and the experimental data, wherein the first methane total mass is the total mass of the methane in the adsorption state and in the free state in the sample at the first moment; and acquiring the ratio of the amount of free gas to the amount of adsorbed gas in the methane at the first moment based on the first adsorption state methane mass and the first methane total mass. According to the method, various parameters of the ratio of the amount of free gas to the amount of adsorbed gas in the methane are calculated based on the experimental measurement, and the disturbance and influence of uncontrollable factors in the engineering are avoided, so that the calculation result of theratio of the amount of free gas to the amount of adsorbed gas in the methane is more accurate, and the ratio of the amount of free gas to the amount of adsorbed gas in the methane can be acquired without directly calculating the mass of the methane in the free state in the sample.
Description
technical field [0001] The invention belongs to the technical field of unconventional natural gas, and in particular relates to a method, system and terminal equipment for obtaining the free absorption ratio of methane. Background technique [0002] With the rapid economic development, the demand for natural gas in countries around the world has shown explosive growth. Conventional natural gas production can no longer meet the current demand, so unconventional natural gas as an important supplement to energy production has become a natural gas development trend. The occurrence state of natural gas in the reservoir mainly includes three kinds: adsorption state, free state and dissolved state. Conventional natural gas is mainly free gas, while unconventional natural gas, such as shale gas and coalbed methane, occurs in reservoirs mainly as adsorbed gas and free gas, with a small amount of dissolved gas, and the total gas content mainly depends on free gas and adsorbed gas. ...
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Login to View More IPC IPC(8): G01N5/02
CPCG01N5/02
Inventor 张金川李振李沛魏晓亮刘君兰
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)