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GB/T 20604-2025 English PDF

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GB/T 20604-2025: Natural gas - Vocabulary
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GB/T 20604: Evolution and historical versions

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GB/T 20604-2025English1019 Add to Cart 6 days [Need to translate] Natural gas - Vocabulary Valid GB/T 20604-2025
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Basic data

Standard ID GB/T 20604-2025 (GB/T20604-2025)
Description (Translated English) Natural gas - Vocabulary
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard E24
Classification of International Standard 75.060
Word Count Estimation 50,516
Date of Issue 2025-04-25
Date of Implementation 2025-11-01
Older Standard (superseded by this standard) GB/T 20604-2006
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 20604-2025: Natural gas - Vocabulary

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ICS 75.060 CCSE24 National Standard of the People's Republic of China Replace GB/T 20604-2006 Natural Gas Glossary (ISO 14532.2014,MOD) Released on 2025-04-25 2025-11-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of contents

Preface III Introduction V 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 3.1 General terms 1 3.2 Measurement method 4 3.3 Sampling 6 3.4 Analysis system 9 3.5 Analysis 10 3.6 Physical and chemical properties 18 3.7 Interchangeability 21 3.8 Odorizing 22 3.9 Thermodynamic properties 23 3.10 Natural gas energy24 Appendix A (Informative) Subscripts, Symbols and Units 26 A.1 Subscript 26 A.2 Symbols and units 26 Appendix B (Informative) Conversion factors between pressure, temperature, length and energy 28 B.1 Pressure Conversion 28 B.2 Temperature Conversion 28 B.3 Length Conversion 28 B.4 Energy conversion 28 Appendix C (Informative) Abbreviations 29 References 30 Index 31

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document replaces GB/T 20604-2006 Natural Gas Vocabulary. Compared with GB/T 20604-2006, except for structural adjustment and editing, In addition to the changes in performance, the main technical changes are as follows. a) The scope has been changed (see Chapter 1, Chapter 1 of the.2006 edition); b) Added commodity natural gas, saturated gas, compressed natural gas, compressed natural gas for vehicles, biogas, biomethane, biomass, shale gas, Coalbed methane, tight sandstone gas, gas pipelines, trade transfer points, distribution stations, gas transmission stations, underground gas storage, transfer interfaces and pipeline network models 17 terms and definitions are proposed (see 3.1.1.2, 3.1.1.11, 3.1.1.12, 3.1.1.13, 3.1.1.16, 3.1.1.17, 3.1.1.18, 3.1.1.19, 3.1.1.20, 3.1.1.21, 3.1.2.2, 3.1.2.4, 3.1.2.5, 3.1.2.6, 3.1.2.7, 3.1.2.8 and 3.1.2.9); c) The term crude natural gas was changed to raw natural gas, the term sour gas was changed to sour natural gas, and their definitions were changed (see 3.1.1.3 and 3.1.1.9, 2.1.1.2 and 2.1.1.8 of the.2006 edition), deleted high-pressure natural gas, low-pressure natural gas, connection point, gas inlet point, and supply point. Terms and definitions for gas stations and export stations (see 2.1.1.10, 2.1.1.11, 2.1.2.3, 2.1.2.4, 2.1.2.5 and 2.1.2.6 of the.2006 edition) 2.1.2.6); d) Added the terms and definitions of lower limit, upper limit and range (see 3.2.1.4, 3.2.1.5 and 3.2.1.6); e) Deleted the terms and definitions of inferential measurement, measurement methods of direct measurement of properties, and integral and fractional parts (see 2.2.1.4,.2006 edition). 2.2.1.5 and 2.2.2.9); f) Added terms and definitions for sample collector, hot loop, vent pipe, continuous sampling and sampling location (see 3.3.2.4, 3.3.2.8, 3.3.2.9, 3.3.2.11 and 3.3.4.5); g) The terms and definitions of transfer duct and bypass pipe have been deleted (see 2.3.2.7 and 2.3.2.9 of the.2006 edition); h) Deleted the relevant terms and definitions of metrology (see 2.5.1 of the.2006 edition); i) Added measurement instrument adjustment, volume conversion, correction value, correction factor, working range, extended working range, analytical quality control Terms and definitions for calibration function, analysis function and mean normalization (see 3.5.1.2, 3.5.1.3, 3.5.1.4, 3.5.1.5, 3.5.1.7, 3.5.1.8, 3.5.1.13, 3.5.2.4.5, 3.5.2.4.6 and 3.5.2.4.7.2); j) The definition of the term "verification" has been changed (see 3.5.1.12, 2.5.2.8 of the.2006 edition); k) The terms and definitions of physical measure, transformation, mole, carbonyl sulfide, sulfide, and sulfide have been deleted, and the relevant terms of statistics have been deleted. Terms and definitions (see 2.5.2.1, 2.5.2.7, 2.5.3.1.3, 2.5.3.3.5, 2.5.3.3.13, 2.5.3.3.14 and 2.5.4 of the.2006 edition); l) The term “standard reference conditions” was changed to “ISO standard reference conditions” and its definition was changed (see 3.6.1.4,.2006 edition). 2.6.1.4); m) Added the term and definition of "Wobbe index fluctuation range" (see 3.6.4.4), deleted the term and definition of transition enthalpy and gas group (see 2.6.4.3 and 2.7.3 of the.2006 edition); n) Added odor perception, odor characteristics, odor intensity, extreme saturation threshold, sensory fatigue, odor addition, detection threshold, odor intensity curve The terms and definitions of line and diluent (see 3.8.3, 3.8.4, 3.8.5, 3.8.6, 3.8.7, 3.8.8, 3.8.9, 3.8.10 and 3.8.11) are deleted. In addition to the terms and definitions of odorous sulfur compounds and tetrahydrothiophene (see 2.8.3 and 2.8.4 of the.2006 edition); o) Added terms and definitions related to thermodynamic properties (see 3.9); p) Added terms and definitions related to natural gas energy (see 3.10). This document is modified to adopt ISO 14532.2014 Natural Gas Vocabulary. This document has the following structural adjustments compared to ISO 14532.2014. --- Added Chapter 2 normative references; --- Appendix A corresponds to the first two parts of Appendix A of ISO 14532.2014; --- Appendix B corresponds to A.1 in Appendix A of ISO 14532.2014; --- Appendix C corresponds to A.2 in Appendix A of ISO 14532.2014. The technical differences between this document and ISO 14532.2014 and their reasons are as follows. --- Added "applicable to the detection and measurement of conventional, unconventional natural gas and natural gas substitutes" to the scope (see Chapter 1) to improve Operability; --- Added commodity natural gas (3.1.1.2), compressed natural gas for vehicles (3.1.1.13), shale gas (3.1.1.19), coalbed methane (3.1.1.20), Dense sandstone gas (3.1.1.21), gas pipeline (3.1.2.2), gas transmission station (3.1.2.6), underground gas storage (3.1.2.7), interface (3.1.2.8), pipe network simulation (3.1.2.9), sample collector (3.3.2.4), continuous sampling (3.3.2.11), calibration function (3.5.2.4.5), Analysis function (3.5.2.4.6), Wobbe index fluctuation range (3.6.4.4), odor intensity curve (3.8.10), diluent (3.8.11), Energy (3.10.1), Energy flow (3.10.2), Energy measurement (3.10.3), Calorific value measurement (3.10.4), Calorific value assignment method (3.10.5), calibration heat value (3.10.6), announcement heat value (3.10.7), representative heat value (3.10.8), billing area (3.10.9), zero The terminology and definitions of floating-point (3.10.10) are provided for the purpose of this document; --- The definition of the term "dry gas" (see 3.1.1.10, 2.1.19 of ISO 14532.2014) has been changed to adapt to the technical conditions of my country; --- The definition of the term "verification" (see 3.5.1.12, 2.5.1.12 of ISO 14532.2014) has been changed to adapt to the technical conditions of my country; --- The definition of the term mass (amount of substance) concentration (see 3.5.2.1.2, 2.5.2.1.2 of ISO 14532.2014) has been changed to adapt Our country's technical conditions. The following editorial changes were made to this document. --- Replaced ISO 18453 (see 3.1.1.10) with the informative reference GB/T 22634-2008, and GB/T 5274.1-2018 ISO 6142 was replaced (see 3.5.2.5.2.2, 3.5.2.5.2.4), GB/T 10628-2008 replaced ISO 6143 (see 3.5.2.5.2.3, --- Added the terms "substitute natural gas", "wet gas" and "ISO standard reference conditions" (see 3.1.1.4, 3.1.1.8 and 3.6.1.4); The note on the term “series of standards” has been deleted (see 2.5.2.5.1.6 of ISO 14532.2014); --- Added Note 2 to the term "ISO standard reference conditions" (see 3.6.1.4); --- Deleted the abbreviations of DMCS, PTFE and THT which did not appear in the text of A.2 of ISO 14532.2014, and added COS, HCDP, PHLC abbreviation; --- Changed references. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the National Natural Gas Standardization Technical Committee (SAC/TC244). This document was drafted by. Natural Gas Research Institute of Southwest Oil and Gas Field Company of China National Petroleum Corporation, China National Petroleum Corporation Southwest Oil and Gas Field Branch of China National Petroleum Corporation, Oil, Gas and New Energy Branch of China National Petroleum Corporation, and National Pipeline Network Corporation West-East Gas Transmission Branch of Hehe Pipeline Co., Ltd., Natural Gas Branch of Daqing Oilfield Co., Ltd., China Huanqiu Engineering Co., Ltd. Beijing Branch, Sinopec Natural Gas Yuji Pipeline Branch, CNOOC (China) Co., Ltd., CNOOC International Trade Co., Ltd., CNOOC (China) Co., Ltd. Hainan Branch. The main drafters of this document are. He Bin, Chen Gengliang, Le Hong, Zhang Weizhi, Xu Wenxiao, Song Chaofan, Zeng Wenping, He Denghua, Zhang Xibin, Li Changxiao, Huang Mei, He Na, Liao Jia, Zhou Lei, Lin Chang, Jiang Yong, Wang Yanbing, Xia Tingyi, Yu Yanbing, Wu Tao, He Wei. This document was first published in.2006 and this is the first revision.

Introduction

The National Natural Gas Standardization Technical Committee (SAC/TC244) is responsible for the following standards. natural gas and natural gas substitutes from production (well The standards cover terminology, quality, measurement methods, sampling, testing and analysis methods from the beginning to the end. The relevant terms are established for specific purposes, and there are differences in terms and definitions. Therefore, it is necessary to review the terms and definitions used in the above-mentioned natural gas field standards. Definitions should be harmonized. This document collects the terms and definitions of ISO 14532 Natural Gas Vocabulary and summarizes the terms and definitions of natural gas related terms in accordance with the natural gas industry in my country. Based on ISO 14532, the use of the exchange is included in the nearly 100 national standards and industry standards of my country's natural gas industry. Common vocabulary. For ease of use, the following instructions are given. ---All definitions are derived from ISO 14532 and my country's national and industry standards for natural gas industry. Browsing the content will help Look up a specific term; --- Many definitions considered important are given notes, which are informative guidance rather than part of the definitions. Natural Gas Glossary

1 Scope

This document defines the terms, definitions, symbols and abbreviations used in the natural gas industry. This document is applicable to the detection and measurement of conventional, unconventional natural gas and natural gas substitutes, and is also a reference for other fields in the oil and gas industry. use.

2 Normative references

This document has no normative references.

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 General terms 3.1.1 Natural Gas 3.1.1.1 Natural gas; NG A complex mixture of hydrocarbons, mainly methane, usually with ethane, propane and smaller amounts of heavier hydrocarbons, as well as some non-flammable gases. (such as nitrogen and carbon dioxide). Note. Natural gas may also contain other components or impurities, such as sulphur compounds and/or other substances. 3.1.1.2 Commercial natural gas Natural gas that is purified and sold to meet product quality standards. Note. The quality of certain commercial natural gas is agreed upon in the contract between the supplier and the buyer. [Source. GB/T 8423.3-2018, 2.1.13, modified] 3.1.1.3 Raw natural gas Untreated natural gas produced from the wellhead and transported through gas gathering pipelines to processing or treatment facilities. Note. Raw natural gas can also be wellhead gas that has been partially processed by upstream infrastructure. 3.1.1.4 Natural gas from non-fossil sources that is interchangeable with natural gas. Note. In the field of urban gas, substitute natural gas generally refers to LPG mixed with air. 3.1.1.5 manufactured gas; synthetic gas Gas that has been processed and may contain various components that are not typical for natural gas. Note 1.Artificial gas may contain a large amount of chemical components that are not typical components of natural gas, or contain a proportion of Special common components.

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