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JJG 1173-2019: Electronic Downhole Pressure Gauges
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| JJG 1173-2019 | English | 339 |
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Electronic Downhole Pressure Gauges
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JJG 1173-2019
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Basic data | Standard ID | JJG 1173-2019 (JJG1173-2019) | | Description (Translated English) | Electronic Downhole Pressure Gauges | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A53 | | Classification of International Standard | 17.100 | | Word Count Estimation | 15,185 | | Date of Issue | 2019 | | Date of Implementation | 2020-03-31 | | Issuing agency(ies) | State Administration for Market Regulation | JJG 1173-2019: Electronic Downhole Pressure Gauges---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.
(Verification Regulation of Electronic Downhole Pressure Gauge)
National Measurement Verification Regulations of the People's Republic of China
Electronic Downhole Pressure Gauge
Published on December 31,.2019
2020-03-31 Implementation
Issued by the State Administration of Market Supervision and Administration
Verification Regulation of Electronic Downhole Pressure Gauge
Centralized unit. National Pressure Measurement Technical Committee
Main drafting unit. Xinjiang Uygur Autonomous Region Metrology and Testing Institute
Participated in the drafting unit. Guangdong Institute of Metrology
Heilongjiang Province Metrology Verification Test Institute
This regulation is entrusted to the National Pressure Measurement Technical Committee for interpretation
The main drafters of this regulation.
Lu Zhongping (Xinjiang Uygur Autonomous Region Metrology and Testing Institute)
Chen Wuqing (Xinjiang Uygur Autonomous Region Metrology and Testing Institute)
Zhuohua (Xinjiang Uygur Autonomous Region Metrology and Testing Institute)
Participating drafters.
Xu Biao (Guangdong Institute of Metrology)
Liu Guofeng (Heilongjiang Metrology Verification Testing Institute)
table of Contents
Introduction (Ⅱ)
1 Scope (1)
2 References (1)
3 Terms and units of measurement (1)
3.1 Terminology (1)
3.2 Unit of measurement (1)
4 Overview (1)
5 Measurement performance requirements (1)
5.1 Indication error (1)
5.2 Return error (2)
6 General technical requirements (2)
6.1 Appearance (2)
6.2 Insulation resistance (2)
6.3 Tightness (2)
7 Control of measuring instruments (2)
7.1 Verification conditions (2)
7.2 Verification items (3)
7.3 Verification method (3)
7.4 Processing of verification results (5)
7.5 Verification period (5)
Appendix A. Additional error correction method for verification caused by height difference of working medium (6)
Appendix B Verification Record Format of Electronic Downhole Pressure Gauge (7)
Appendix C Electronic Downhole Pressure Gauge Verification Certificate/Verification Results Inner Page Format (8)
Introduction
JJF1002 "Rules for the preparation of national metrological verification regulations", JJF1001 "General metrological terms and definitions",
JJF1008 "Terms and Definitions of Pressure Measurement Terms" and JJF1059.1 "Measurement Uncertainty Evaluation and Expression"
It constitutes the basic series of specifications formulated by this regulation.
This regulation refers to the content of JJG 875-2005 "Digital Pressure Gauge", and combines
Production and use situation and the actual situation of many years of verification work, the specific technical indicators and verification methods of electronic downhole pressure gauges
The law is defined and explained.
This regulation is issued for the first time.
Verification Regulation of Electronic Downhole Pressure Gauge
1 Scope
This regulation is applicable to electronic downhole pressure with working temperature not exceeding.200℃ and measuring upper limit not greater than 250MPa
The first verification, subsequent verification and in-use inspection of force gauges (including storage and direct reading).
2 Reference documents
This regulation refers to the following documents.
JJG 875 digital pressure gauge
JJF1008-2008 Terms and definitions of pressure measurement terms
For dated references, only the dated versions are applicable to this Regulation; for those without dates
The latest version (including all amendments) is applicable to this regulation.
3 Terms and units of measurement
3.1 Terminology
3.1.1 Electronic downhole pressure gauges
A special instrument for measuring downhole pressure in oil and gas fields.
3.2 Unit of measurement
The legal unit of measurement used by electronic downhole pressure gauges is Pa (Pascal), or its decimal multiple unit, such as
kPa, MPa, etc.
4 Overview
Electronic downhole pressure gauge (hereinafter referred to as downhole pressure gauge) consists of high temperature resistant circuit casing, pressure sensor, rotary
It consists of a replacement unit, a storage unit and a pressure transmission joint. Its working principle is. the downhole pressure acts on the pressure sensor,
The conversion unit converts the pressure to its corresponding digital signal, and the storage unit automatically stores the pressure of the measured position downhole
Force value. Downhole pressure gauge can be divided into two types of storage type and direct reading type according to the structural principle.
Downhole pressure gauge is mainly used to measure oil and gas downhole flow pressure, formation pressure and shut-in well in the process of oil exploration and development
After the recovery of the bottom hole pressure and the pressure distribution in the well during use, etc.
5 Measurement performance requirements
5.1 Indication error
The accuracy grade and the maximum allowable error of the downhole pressure gauge should meet the requirements of Table 1; the indication value of the downhole pressure gauge is wrong
The difference should not exceed the maximum allowable error specified in Table 1.
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