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GB/T 39539-2020: Technical requirements for determination of gas diffusion coefficient in shale reservoir
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 39539-2020 | English | 189 |
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Technical requirements for determination of gas diffusion coefficient in shale reservoir
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GB/T 39539-2020
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Basic data | Standard ID | GB/T 39539-2020 (GB/T39539-2020) | | Description (Translated English) | Technical requirements for determination of gas diffusion coefficient in shale reservoir | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E11 | | Classification of International Standard | 75.010 | | Word Count Estimation | 10,119 | | Date of Issue | 2020-11-19 | | Date of Implementation | 2021-06-01 | | Regulation (derived from) | National Standard Announcement No. 26 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 39539-2020: Technical requirements for determination of gas diffusion coefficient in shale reservoir
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(Technical requirements for measuring gas diffusion coefficient of shale reservoir)
ICS 75:010
E11
National Standards of People's Republic of China
Gas diffusion coefficient of shale reservoir
Measurement technical requirements
2020-11-19 released
2021-06-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Method summary 1
5 Equipment and materials 1
6 Sample preparation 2
7 Measurement steps and requirements 2
8 Data processing 4
9 Rounding off 4
10 Precision 4
11 Experimental result data 4
Appendix A (informative appendix) Experimental report on gas diffusion coefficient measurement of shale reservoir 5
Appendix B (informative appendix) Derivation of diffusion coefficient calculation formula 6
Foreword
This standard was drafted in accordance with the rules given in GB/T 1:1-2009:
This standard was proposed and managed by the National Natural Gas Standardization Technical Committee (SAC/TC244):
Drafting organizations of this standard: China National Petroleum Corporation Southwest Oil and Gas Field Branch Shale Gas Research Institute, China National Petroleum Corporation
Research Institute of Exploration and Development Co:, Ltd:, Research Institute of Exploration and Development of Sinopec Jianghan Oilfield Company, Sinopec Petroleum Engineering Technology Research
Research Institute, Exploration and Development Research Institute of Southwest Oil and Gas Field Branch of China National Petroleum Corporation, Exploration and Development Research Institute of Sinopec Shengli Oilfield Branch
Development Research Institute, CNOOC Energy Development Co:, Ltd: Engineering Technology Branch, CNOOC Research Institute Co:, Ltd:
The main drafters of this standard: Li Wuguang, Wu Jianfa, Hu Zhiming, Zhou Yuping, Duan Xianggang, Yang Wenxin, Zhang Deliang, Zhang Jian, Yue Wenhan,
Deng Xiaohang, Bai Yuhu, Pang Wei, Zheng Qiang, Wan Huan, Wang Yurong, Bao Youshu:
Gas diffusion coefficient of shale reservoir
Measurement technical requirements
1 Scope
This standard specifies the method and technical requirements for the determination of gas diffusion coefficient of shale reservoirs:
This standard is applicable to the determination of gas diffusion coefficient in shale reservoirs:
The test range of gas diffusion coefficient of shale reservoirs in this standard: 1:0×10-3cm2/s~1:0×10-8cm2/s:
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 19560-2008 High-pressure isothermal adsorption test method for coal
GB/T 29172-2012 core analysis method
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
Shale reservoir gas diffusion coefficient gasdiffusioncoefficientinshalereservoir
A physical quantity representing the gas diffusion capacity in shale reservoirs, and the mass of gas passing through a unit area in a unit time:
Note: The unit is square centimeters per second (cm2/s):
3:2
Gas concentration
The mass of gas contained in a shale sample per unit volume:
Note: The unit is milligrams per cubic centimeter (mg/cm3):
4 Method summary
First, place the columnar shale sample in a dry state or a balanced water state in a core holder, and then saturate the core with gas:
After the pressure at both ends is balanced, open the outlet end to measure the core pressure, the gas volume produced, and the time, and then use the Fick diffusion theory to calculate the page
Diffusion coefficient of methane gas in rock reservoirs:
5 Equipment and materials
5:1 The equipment required for sample preparation includes:
---Drilling prototype;
---Drying box;
---Dryer;
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