GB/T 35065.1-2018 English PDF

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GB/T 35065.1-2018: Wet natural gas flow measurement -- Part 1: General rules
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Basic data

Standard ID: GB/T 35065.1-2018 (GB/T35065.1-2018)
Description (Translated English): Wet natural gas flow measurement -- Part 1: General rules
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: E24
Classification of International Standard: 75.060
Word Count Estimation: 13,136
Date of Issue: 2018-05-14
Date of Implementation: 2018-12-01
Regulation (derived from): National Standards Announcement No. 6 of 2018
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 35065.1-2018: Wet natural gas flow measurement -- Part 1: General rules

---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.
(Wet natural gas flow measurement Part 1. General principles) ICS 75.060 E24 National Standards of People's Republic of China Wet natural gas flow measurement Part 1. General principles Part 1. Generalrules Published on.2018-05-14 2018-12-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Measurement purposes 5 5 Wet natural gas flow classification 5 5.1 Influence of wet natural gas flow pattern on flowmeter 5 5.2 Horizontal flow of wet natural gas flow pattern 5 5.3 Vertically rising flow of wet natural gas flow pattern 6 5.4 Vertically descending wet natural gas flow pattern 6 5.5 Flow Pattern Figure 6 5.6 Flow pattern change 6 6 Measurement method 6 6.1 Method for measuring gas phase flow in combination with correction factor 6 6.2 Method for measuring gas-liquid two-phase flow 7 6.3 Method for measuring gas-water hydrocarbon three-phase flow 7 7 General principles of design and installation 7 8 Debug 8 9 performance test 8 10 Operation and Maintenance 8 11 Uncertainty assessment 9

Foreword

This section is the first part of the wet gas flow measurement standard. This part is drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This part is proposed and managed by the National Natural Gas Standardization Technical Committee (SAC/TC244). This section drafted by. China National Petroleum Corporation Daqing Petroleum Administration Technical Supervision Center, China National Petroleum Corporation has Limited Natural Gas Research Institute of Southwest Oil and Gas Field Company, National Oil and Gas Large Flow Metering Station Chengdu Substation, CNOOC (China) Limited Company Yacheng Operation Company, China National Offshore Oil (China) Co., Ltd. Zhanjiang Branch, National Oil and Gas Large Flow Meter Station, Sinopec Day Ranqi Branch Metrology Center, China National Petroleum Corporation Huabei Oilfield Branch. Drafters of this section. Xue Guomin, Luo Qin, Wang Yubo, Zhang Qiang, Tian Songnan, Tu Shaoyong, Deng Chuanzhong, Xu Wenxiao, Xu Ning, Chen Liang, Yan Wencan, Liu Junfeng, Cheng Xingping.

Introduction

Wet natural gas flow measurement standards are divided into general principles, standard equipment technical requirements, differential pressure flowmeters, spiral vortex flowmeters, two-phase wet Natural gas flowmeter, multi-phase wet natural gas flowmeter, performance evaluation of measurement system, etc. Wet natural gas flow measurement for gas reservoir dynamic management, gas well production capacity optimization, hydrate control and flow during wet natural gas transportation operations Dynamic safeguards, production calculations and sales allocations provide basic data for calculations and design and are one of the key measurement methods in the upstream field of natural gas. This part is formulated with reference to ISO /T R12748.2015 “Measurement of Wet Natural Gas Flow in Natural Gas Production”. Wet natural gas flow measurement Part 1. General principles Caution - This section does not cover all security issues related to its application. Before using this section, the user is responsible for making the corresponding Safety and protection measures and clarify the scope of their limitations.

1 Scope

This part of GB/T 35065 specifies the classification of wet natural gas flow, the method of flow measurement, and the selection, installation and commissioning of flowmeters. General principles for testing, operation and maintenance, and uncertainty assessment. This section applies to wet natural gas flow measurements in onshore and offshore oil and gas fields.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 20604 Natural Gas Vocabulary (GB/T 20604-2006, ISO 14532.2001, IDT)

3 Terms and definitions

The following terms and definitions as defined in GB/T 20604 apply to this document. 3.1 Wet natural gas wetnaturalgas The natural gas volume dominates the gas-liquid two-phase flow, and its relative humidity reaches a saturated state. 3.2 Phase phase Three components of gas, water and hydrocarbon liquids in wet natural gas. 3.3 Multiphase flow multiphaseflow A fluid composed of two or more of a gas phase, an aqueous phase, and a hydrocarbon liquid phase. 3.4 Gas volume fraction gasvolumefraction; GVF Under the working conditions, the ratio of gas volume flow to total fluid flow, GVF can be expressed as the ratio or percentage, see equation (1). GVF= Qg Qg Ql (1) In the formula. GVF---gas volume fraction, dimensionless; Qg --- gas volume flow in cubic meters (m3); Ql --- liquid volume flow in cubic meters (m3). Note. Rewrite the definition of GB/T 20604-20062.5.3.1.1. ......

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