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GB/T 35210.2-2020: Determination methods of methane isothermal adsorption of shale - Part 2: Gravimetric method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 35210.2-2020 | English | 209 |
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Determination methods of methane isothermal adsorption of shale - Part 2: Gravimetric method
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GB/T 35210.2-2020
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Basic data | Standard ID | GB/T 35210.2-2020 (GB/T35210.2-2020) | | Description (Translated English) | Determination methods of methane isothermal adsorption of shale - Part 2: Gravimetric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E11 | | Classification of International Standard | 75.020 | | Word Count Estimation | 11,136 | | Date of Issue | 2020-12-14 | | Date of Implementation | 2021-07-01 | | Quoted Standard | GB/T 474; GB/T 29172 | | Regulation (derived from) | National Standard Announcement No. 28 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the gravimetric method for the determination of shale methane isotherm adsorption. This standard is applicable to the determination of the adsorption capacity of shale for methane gas. Other rock types can be implemented by reference. | GB/T 35210.2-2020: Determination methods of methane isothermal adsorption of shale - Part 2: Gravimetric method
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(Shale methane isotherm adsorption determination method Part 2: Gravimetric method)
ICS 75:020
E11
National Standards of People's Republic of China
Method for determination of shale methane isotherm adsorption
Part 2: Weight Method
2020-12-14 release
2021-07-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Preface Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Method summary 1
5 Equipment and materials 2
6 Sample preparation 2
7 Test Step 2
8 Data processing 4
9 Rounding off 6
10 Quality requirements 6
11 Experiment report 6
Appendix A (informative appendix) Blank test to obtain sample frame volume and mass 7
Appendix B (informative appendix) shale gravimetric isotherm adsorption test report 8
Foreword
GB/T 35210 "Method for the determination of shale methane isothermal adsorption" is divided into two parts:
---Part 1: Volume method;
---Part 2: Weight method:
This part is Part 2 of GB/T 35210:
This section was drafted in accordance with the rules given in GB/T 1:1-2009:
This part was proposed and managed by the National Natural Gas Standardization Technical Committee (SAC/TC244):
Drafting organizations of this section: Wuxi Institute of Petroleum Geology, Petroleum Exploration and Development Research Institute of China Petroleum & Chemical Corporation, CNOOC Energy
Yuan Development Co:, Ltd: Engineering Technology Branch, China National Petroleum Corporation Exploration and Development Research Institute, China Petroleum and Chemical Corporation
Research Institute of Exploration and Development of Shengli Oilfield Branch Company, Northwest Institute of Eco-Environmental Resources, Chinese Academy of Sciences, Sichuan Keyuan Engineering Technology
Technical testing center:
The main drafters of this section: Yu Lingjie, Liu Youxiang, Xu Shuang, Zhou Shangwen, Wu Lianbo, Li Xiaofu, Li Jing, Fan Ming, Liu Xueqing, Bao Youshu,
Qi Minghui and Liu Honglin:
Method for determination of shale methane isotherm adsorption
Part 2: Weight Method
1 Scope
This part of GB/T 35210 specifies the gravimetric method for the determination of shale methane isotherm adsorption:
This section applies to the determination of shale adsorption capacity for methane gas, other rock types can be implemented by reference:
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article
Pieces: For undated references, the latest version (including all amendments) applies to this document:
GB/T 474 Coal sample preparation method
GB/T 29172 Core Analysis Method
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
Excessadsorption
The amount of adsorption obtained directly from the experiment:
3:2
Absoluteadsorption
Consider the amount of adsorption after correction for the density (or volume) of the adsorption phase, that is, the true adsorption amount:
3:3
Langmuir volume
Maximum adsorption capacity
VL
Absolute adsorption capacity at infinite pressure:
3:4
Langmuirpressure
PL
The absolute adsorption capacity is the pressure corresponding to 1/2 the Ran's volume:
4 Method summary
Place the prepared shale sample in a sealed chamber, perform methane adsorption at a constant temperature and different pressure measurement points, and use a magnetic suspension balance
The recorded mass change is used to obtain the mass of the adsorbed methane gas, and then the shale adsorption characteristic parameters are calculated according to the Langmuir theoretical model 1):
And draw the adsorption isotherm curve:
1) The Langmuir theoretical model equation is one of the commonly used adsorption isotherm equations, which was developed by the physical chemist Langmuir Itying in 1916
Based on the molecular motion theory and some assumptions: Now widely used in adsorption:
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