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GB/T 22723-2024: Natural gas - Energy determination
Status: Valid GB/T 22723: Evolution and historical versions
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Natural gas - Energy determination
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GB/T 22723-2024
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| GB/T 22723-2008 | English | 979 |
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Energy determination for natural gas
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PDF similar to GB/T 22723-2024
Basic data | Standard ID | GB/T 22723-2024 (GB/T22723-2024) | | Description (Translated English) | Natural gas - Energy determination | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E24 | | Classification of International Standard | 75.060 | | Word Count Estimation | 62,635 | | Date of Issue | 2024-09-29 | | Date of Implementation | 2025-04-01 | | Older Standard (superseded by this standard) | GB/T 22723-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 22723-2024: Natural gas - Energy determination---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 75.060
CCSE24
National Standard of the People's Republic of China
Replace GB/T 22723-2008
Determination of natural gas energy
(ISO 15112.2018,MOD)
Released on 2024-09-29
2025-04-01 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
4 Symbols and units 3
5 General principles 4
6 Energy Measurement Overview 5
6.1 Overview of energy measurement methods 5
6.2 Requirements and methods for determination 8
7 Energy measurement methods and requirements 10
7.1 Interface 10
7.2 Different interface energy measurement schemes 11
8 Energy measurement implementation 12
8.1 Energy measurement implementation process 12
8.2 Reasonableness test 12
9 Energy Calculation 13
9.1 General calculation equation of energy 13
9.2 Calculation of average calorific value 14
9.3 Unified energy measurement units 15
9.4 Application of Announcement of Heat Generation 15
10 Accuracy of energy measurement 15
10.1 Accuracy Evaluation 15
10.2 Accuracy 15
10.3 Calculation of uncertainty 15
10.4 Deviation 16
11 Quality Control and Quality Assurance17
11.1 General 17
11.2 Measurement data operation process check 17
11.3 Traceability 17
11.4 Alternative values 18
Appendix A (Informative) Volume Conversion and Volume to Mass Conversion 19
Appendix B (Informative) Volume Conversion and Energy Calculation Examples 20
Appendix C (Normative) Assignment of calorific value 23
Appendix D (Informative) Different possible changes in heat generation 30
Appendix E (Informative) Determination of calorific value of a single gas reservoir 33
Appendix F (Informative) Examples of Calculating Average Heat Value Based on Different Conveying Conditions 34
Appendix G (Informative) Example of determining the implementation process of site energy measurement 39
Appendix H (Informative) Example of Reasonableness Test Graphics 46
Appendix I (Informative) Incremental Energy Determination 47
Appendix J (Informative) Method for determining alternative values 48
Appendix K (Informative) Gas Quality Tracking 49
Appendix L (Informative) Energy Measurement Result Record Table 54
References 55
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents".
This document replaces GB/T 22723-2008 "Determination of Energy of Natural Gas". Compared with GB/T 22723-2008, in addition to structural adjustments and
In addition to editorial changes, the main technical changes are as follows.
a) Some terms and definitions have been changed (see Chapter 3, Chapter 3 of the.2008 edition);
b) Added requirements for measuring mass or volume of flowmeters with different measurement principles (see 6.2.2);
c) Deleted the provisions on volume conversion, verification or calibration, and data storage and transmission for gas measurement (see 6.4,.2008 edition).
6.5, 6.6);
d) The possible interfaces for energy determination have been changed (see Chapter 7, Chapter 7 of the.2008 edition);
e) Added instructions for the energy measurement implementation process, and changed the energy measurement strategy from a flowchart to a more operational clause list.
Out (see Chapter 8);
f) The method of assigning calorific value has been changed (see Appendix C, 8.2.1.5.1, 8.2.1.5.2, Chapter 9 of the.2008 edition).
This document is modified to adopt ISO 15112.2018 “Determination of energy content of natural gas”.
This document has the following structural adjustments compared to ISO 15112.2018.
---6.1 corresponds to 7.2 in ISO 15112.2018;
---6.2.1, 6.2.2, 6.2.3 correspond to 6.1, 6.2, 6.3 in ISO 15112.2018; the
6.4,6.5,6.6;
---7.2 corresponds to 8.2 in ISO 15112.2018; 8.1 in ISO 15112.2018 is deleted;
---8.2 corresponds to 8.3 in ISO 15112.2018;
--- Chapter 9 corresponds to Chapter 10 of ISO 15112.2018;
--- Chapter 10 corresponds to Chapter 11 of ISO 15112.2018, of which 10.2 to 10.4 correspond to Chapter 11 of ISO 15112.2018
11.1~11.3, increased by 10.1;
--- Chapter 11 corresponds to Chapter 12 of ISO 15112.2018;
--- Appendix C corresponds to Chapter 9 of ISO 15112.2018, and adds Appendix G and Appendix L;
---The appendix numbers have been adjusted according to the order in which they appear in the text.
The technical differences between this document and ISO 15112.2018 and their reasons are as follows.
--- Added normative references GB/T 20604, GB/T 8423.4, JJF1001 (see Chapter 3) to adapt to my country's technical requirements
Improve operability;
--- Added normative references to GB/T 19205 (see Table 1) to adapt to my country's technical conditions and improve operability;
--- Added normative references to GB/T 18603 (see 6.2.1, 7.1, 10.1) to adapt to my country's technical conditions and improve operability
Sex;
--- Added normative reference SY/T 7552 (see 6.2.1) to adapt to my country's technical conditions and improve operability;
--- Added normative reference GB/T 21446 (see 6.2.2.2) to adapt to my country's technical conditions and improve operability;
--- Added normative reference GB/T 18604 (see 6.2.2.3) to adapt to my country's technical conditions and improve operability;
--- Added normative reference GB/T 21391 (see 6.2.2.4) to adapt to my country's technical conditions and improve operability;
--- Added normative reference SY/T 6660 (see 6.2.2.5) to adapt to my country's technical conditions and improve operability;
--- Added normative reference SY/T 6659 (see 6.2.2.6) to adapt to my country's technical conditions and improve operability;
--- Added normative reference SY/T 7552 (see 6.2.2.7) to adapt to my country's technical conditions and improve operability;
--- Added normative reference GB/T 34166 (see 6.2.2.8) to adapt to my country's technical conditions and improve operability;
--- Added normative reference GB/T 13609 (see 6.2.3.1) to adapt to my country's technical conditions and improve operability;
--- Added normative reference GB/T 35211 (see 6.2.3.2) to adapt to my country's technical conditions and improve operability;
--- Added normative reference GB/T 13610 (see 6.2.3.3) to adapt to my country's technical conditions and improve operability;
--- ISO 6976 (see 6.2.3.3) has been replaced with the normative reference GB/T 11062 to adapt to my country's technical conditions and improve the reliability of the product.
Operability;
--- Changed the description of volume or mass measurement (see Chapter 6, Chapter 6 of ISO 15112.2018), Volume or mass measurement
The requirements of GB/T 18603 are cited for explanation;
--- Added requirements for flowmeters with different measurement principles to measure mass or volume (see 6.2.2.2 to 6.2.2.8);
--- Added the description of the calorific value assignment method (see 6.2.4), which includes the use of historical data assignment, spot test results assignment,
value, calculation and assignment using associated site data, sampling and assignment by cumulative sampler, and online continuous sampling and test assignment;
--- Deleted the provisions for volume conversion, verification or calibration of gas measurement and data storage and transmission (see ISO 15112.2018
Chapter 6), which is inconsistent with the domestic situation;
--- Changed the "Energy determination" section (see Chapter 7, Chapter 7 of ISO 15112.2018), combining the description of the measurement principle
GB/T 18603, according to the measurement method and equipment configuration, measurement accuracy level requirements determined by this standard, and different interfaces
In response to the request, the possible interface of energy measurement was modified;
--- Added instructions for the implementation process of energy measurement, and changed the energy measurement strategy from a flowchart to a more operational clause list.
out (see 8.1);
--- Added the requirements for accuracy assessment in combination with GB/T 18603 (see 10.1);
--- Added the normative reference JJF1059.1 (see 10.3.1) to adapt to my country's technical conditions and improve operability;
--- 8.1 in ISO 15112.2018 (see 8.1 in ISO 15112.2018) has been deleted and expressed in terms for easier understanding;
--- Based on Chapter 9 and 8.2.1.5.1 and 8.2.1.5.2 of ISO 15112.2018, the method for assigning calorific value has been changed (see
Appendix C).
The following editorial changes were made to this document.
--- Deleted Appendix A (informative) "Recommended instruments and methods for energy determination" in ISO 15112.2018;
--- Deleted Appendix I (informative) "Uncorrected data, deviation correction and final result illustration" in ISO 15112.2018;
--- Added Appendix L (informative) "Energy measurement result record sheet";
--- 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 PetroChina Co., Ltd., Natural Gas Sales Branch of PetroChina Co., Ltd., Daqing Oilfield Co., Ltd.
Company, National Petroleum and Natural Gas Pipeline Network Corporation West-East Gas Transmission Branch, China Petrochemical Corporation Natural Gas Yuji Pipeline
Branch, PetroChina International Pipeline Co., Ltd., Beijing Gas Group Co., Ltd., China Institute of Metrology, Southwest Petroleum University,
Gas Transmission Management Office of Southwest Oil and Gas Field Branch of China National Petroleum Corporation, North China Oilfield of China National Petroleum Corporation
Branch, China National Petroleum and Natural Gas Pipeline Network Corporation Limited, China National Pipeline Network Corporation Northern Pipeline Co., Ltd.
Company, China National Petroleum and Natural Gas Pipeline Network Corporation, China Testing Technology Research Institute, China University of Metrology, China Petroleum Engineering Construction Co., Ltd.
Southwest Branch of the Company, Metso Instruments (Changzhou) Co., Ltd., Shanghai CNNC Weisi Instruments Co., Ltd., Changzhou Pannuo Instruments Co., Ltd.
Co., Ltd., Dazhou Quality and Technical Supervision Inspection and Testing Center, Chengdu Sichuang Ruizhi Technology Co., Ltd.
The main drafters of this document are. Chang Honggang, Zhou Li, Cai Li, Luo Qin, Le Hong, Duan Jiqin, Tu Zhenquan, Li Wanjun, Ren Jia, Zhou Daibing, He Na,
Zhang Peiying, Zhang Piao, Chen Yong, Wu Yan, Sun Qi, Li Ke, Zhao Chenghai, Chen Xuefeng, Liu Zhe, Wang Huaqing, Wang Xinwei, Wu Hai, Ding Sijia, Pei Quanbin,
Han Tao, Lin Min, Han Jing, Zhou Lei, Mu Chengguang, Li Genchen, Zhou Yang, Pan Yi, Zhang Hongjun, Xu Gang, Yang Di, He Shengli, Wu Chongyang, Deng Yuanfang, Feng Lide,
Zhao, Yulong, Yang, Jiawei, and Li, Penghui.
This document was first published in.2008 and this is the first revision.
Introduction
In the late 1970s and early 1980s, foreign natural gas trade began to shift from volume measurement to energy measurement.
In addition to Sri Lanka, Central Asian countries and China, other major countries and regions in the world all use energy measurement for natural gas trade.
Accurate measurement is the basis for natural gas energy measurement. This document is the core standard for regulating natural gas energy measurement methods and is of great significance for guiding the
The implementation of gas energy metering methods and the formulation of plans are of great significance.
This document is an important technical support document for natural gas energy measurement. This document is consistent with GB/T 18603 "Technical Requirements for Natural Gas Metering Systems".
The current natural gas measurement specifications and measurement system requirements in my country are combined with the JJF1993 "Technical Specifications for Natural Gas Energy Measurement" and other documents.
It can effectively guarantee the accuracy, effectiveness and traceability of energy measurement, and jointly support the implementation of natural gas energy determination and energy measurement.
Determination of natural gas energy
1 Scope
This document provides the principle of determining the energy of natural gas and stipulates the principle of determining the energy of natural gas at different natural gas interfaces.
The technology and measures needed to determine the energy value are applied to the production site, and the uncertainty evaluation method is given.
This document applies to energy determination in all natural gas energy determination systems from low pressure to high pressure.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
document.
GB/T 8423.4 Terminology of the petroleum and natural gas industry Part 4.Oil and gas measurement and analysis
GB/T 11062 Calculation method for calorific value, density, relative density and Wobbe index of natural gas
GB/T 13609 Guidelines for Natural Gas Sampling
GB/T 13610 Composition analysis of natural gas - Gas chromatography
GB/T 18603 Technical requirements for natural gas metering systems
GB/T 18604 Measurement of natural gas flow using gas ultrasonic flowmeter
GB/T 19205 Standard reference conditions for natural gas
GB/T 20604 Natural Gas Vocabulary
GB/T 21391 Measurement of natural gas flow using gas turbine flowmeters
GB/T 21446 Measurement of natural gas flow using standard orifice flowmeters
GB/T 34166 Measurement of natural gas flow using standard nozzle flowmeter
GB/T 35211 Measurement of calorific value of natural gas - Continuous combustion method
JJF1001 General metrological terms and definitions
JJF1059.1 Evaluation and Expression of Measurement Uncertainty
SY/T 6659 Measurement of natural gas flow using Coriolis mass flowmeter
SY/T 6660 Measurement of natural gas flow using rotary positive displacement gas flowmeter
SY/T 7551 Measurement of natural gas flow using channel flowmeter
SY/T 7552 Selection Guide for Flow Meters for Natural Gas Trade Measurement
3 Terms and definitions
The terms and definitions defined in GB/T 20604, GB/T 8423.4, JJF1001 and the following apply to this document.
3.1
Energy
Under given conditions, the product of gas volume or mass and unit calorific value.
Note 1.Energy can also be called total energy.
Note 2.Energy is usually expressed in MJ.
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