Method and device for determining adsorption quantity of water-containing shale

A technology for determining the method and the amount of adsorption, which is applied in the direction of analyzing materials and instruments, can solve the problems of poor accuracy and large errors, and achieve the effect of accurately determining the amount of adsorption

Active Publication Date: 2018-11-16
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0005] The embodiment of the present application provides a method and device for determining the adsorption capacity of water-bearing shale, so as to solve the technical problems of poor accuracy and large errors in existing methods, and achieve the technical effect of accurately determining the adsorption capacity of water-containing shale

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  • Method and device for determining adsorption quantity of water-containing shale
  • Method and device for determining adsorption quantity of water-containing shale
  • Method and device for determining adsorption quantity of water-containing shale

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Embodiment Construction

[0056] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0057]Considering that the existing technology often does not take into account the interference and influence of the specific implementation process of the shale isothermal adsorption experiment on the accuracy of the measured experimental result data. For example, most of the existing methods directly use the experimentally measured pre...

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Abstract

The embodiment of the invention provides a method and a device for determining the adsorption quantity of a water-containing shale. The method comprises the following steps: obtaining a water-containing shale sample; performing an water-containing shale isothermal adsorption experiment on the water-containing shale sample to detect a first experimental equilibrium pressure, a first reference equilibrium pressure and a first communication adsorption equilibrium pressure; calculating the saturated water vapor pressure, and using the saturated water vapor pressure to respectively correct the above measured pressure data in order to obtain a second experimental equilibrium pressure, a second reference equilibrium pressure and a second communication adsorption equilibrium pressure; and determining the adsorption quantity of the water-containing shale according to the second experimental equilibrium pressure, the second reference equilibrium pressure and the second communication adsorption equilibrium pressure. The interference of water evaporation in the adsorption experiment is considered, the saturated water vapor pressure is used to correct the experimentally detected pressure data,and the corrected pressure data are used to determine the adsorption quantity of the water-containing shale, so the technical problems of poor accuracy and large error in the prior art are solved.

Description

technical field [0001] The present application relates to the technical field of oil and gas exploration and development, in particular to a method and device for determining the adsorption capacity of water-bearing shale. Background technique [0002] When exploring shale gas reserves in the target area, it is often necessary to measure the adsorption capacity of natural gas in the water-bearing shale, and then evaluate the shale gas reserves in the target area according to the adsorption capacity of the water-bearing shale. [0003] At present, most of the existing methods are to calculate the adsorption amount of water-bearing shale by combining the gas state equation and material balance equation with the experimental data measured by shale isothermal adsorption experiments. However, the existing methods are relatively simple, often ignoring the interference in the experimental process, resulting in the measured experimental result data not accurately reflecting the corr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/04
CPCG01N7/04
Inventor 宁正福陈志礼王庆齐荣荣孙逢瑞黄亮张泽权李铭琪孙一丹李钟原
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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