GB/T 26981-2020 in English

VALID

Analysis method for reservoir fluid physical properties

Issued on:2020-11-19
Implemented on:2021-06-01
File Format:PDF
Delivery:Via email within 10 business days

Price(USD)： $1,110.00
$1,077.00

Standard No:	GB/T 26981-2020
Document status:	VALID
Title in English:	Analysis method for reservoir fluid physical properties
Title in Chinese:	油气藏流体物性分析方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 10 business days
Issued on:	2020-11-19
Implemented on:	2021-06-01
Superseding:	GB/T 26981-2011 Test method for reservoir fluid physical properties
ICS Classification:	75.020-Extraction and processing of petroleum and natural gas
Chinese Classification:	E12-Petroleum development
Professional Classification:	GB-National Standard
Related Keywords:	high pressure density meter method analysis analysis method data analysis bubble point pressure determination inflection point method + y function verification component calculation reservoir fluid
Related Topics:	analysis oil and gas physical properties Gas Qualitative Analysis Qualitative analysis method of organic matter sex analysis Flow cytometric analysis of exosomes crude oil volatility gas composition method Gas detection analysis method Gas composition analysis method Physical property analysis method Airflow Sieve Analysis Analysis of flow properties oil and gas Gas Composition Analysis Methods Human Bioanalysis Methods for Analyzing Gas Composition Analysis+ Antibodies for Flow Cytometry thermal analysis gas Logistics Analysis Physical property analysis Physical property analysis Analytical method tolerance Analytical method tolerance oil gas oil and gas reservoir fluid analysis Substance Qualitative Analysis Methods fluid analysis Solidity analysis method Fluid Analysis System sexual analysis method crude oil volatility GB/T 26981-2011 Methods for Analyzing Plant Stress Resistance Fluid Analysis System Gas analyzer measurement method GB/t+26981 Gas composition analysis method Fluid Test Analysis Fluid mechanics analysis body analysis- Gas composition analysis method Gas composition analysis method Methods for Analyzing Plant Stress Resistance Five gas analyzer detection method / analysis Oil and gas reservoir fluid properties GBT26981 GB/T 26981-2011 GB/T 26981-2020 Methods for analysis of organic components of mineral oil Gas phase analysis method splitless injection Streaming histogram analysis method What analytical methods can be used to analyze oil depots? A brief analysis of chiral separation methods Polyploid flow analysis method Activity method parallelism analysis Liquid phase analysis method development process Gas total component analysis method Glycerol gas phase analysis method Homology analysis method Stereoisomer Analysis Methods Examination of the robustness of analytical methods Gas analyzer calibration method In vitro activity analysis method of antibody drugs Drug analysis methods for specific drugs Drug analysis method validation process Common methods and characteristics of in vivo drug analysis Common methods and characteristics of in vitro drug analysis Commonly used methods for in vivo drug analysis Lateral flow chromatography quantitative analysis method Analytical method linearity In vivo drug analysis methods

《GB/T 26981-2020油气藏流体物性分析方法》由TC355（全国石油天然气标准化技术委员会）归口，TC355SC6（全国石油天然气标准化技术委员会油气田开发分会）执行，主管部门为国家标准化管理委员会。

Introduction

Overview of the core content of the standard

Version comparison	GB/T 26981-2011	GB/T 26981-2020
Definition of terms	23 items	New definitions of dissolved gas-oil ratio, pseudo-components, etc.
Instrument specifications	PVT instrument ≥70MPa/150℃	Clearly define new equipment such as electromagnetic/capillary viscometer
Test methods	5 types of basic experiments	Add 3 new methods including high temperature and high pressure density meter method

Analysis of key technical points

1. Fluid classification standard

According to gas-oil ratio and density, hydrocarbon fluids are divided into:

Black oil: GOR＜250m³/m³, ρ＞0.83g/cm³
Volatile crude oil: 250≤GOR≤550m³/m³
Condensate gas: 550＜GOR≤18000m³/m³

2. Core experimental methods

Constant Content Expansion Experiment (CCE)

The key experiment for determining the pressure-volume relationship is used to determine:

Bubble point/dew point pressure
Compressibility coefficient (Co_o)
Y function curve

Typical data: The error of volume coefficient under saturation pressure should be <1%

Implementation suggestions

Laboratory configuration requirements

Equipment type	Technical parameters	Calibration cycle
PVT instrument	≥70MPa/150℃, ±0.5℃	12 months
High-pressure viscometer	Relative deviation＜3%	24 months

Key points of data analysis

Bubble point pressure determination:PV curve inflection point method + Y function verification
Component calculation:Need to include C₇₊pseudo-component parameters
Viscosity test:The ball-falling time should be controlled in the range of 10-80 seconds

More samples: QC/T 942-2021 YD/T 3934-2021 GB 50021-2001(2009)

Sample only — not a preview of GB/T 26981-2020

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