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GB/T 33791-2017 | English | 379 |
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Technical specification for cathodic protection of steel well casings
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GB/T 33791-2017
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Basic data Standard ID | GB/T 33791-2017 (GB/T33791-2017) | Description (Translated English) | Technical specification for cathodic protection of steel well casings | Sector / Industry | National Standard (Recommended) | Classification of Chinese Standard | A29 | Classification of International Standard | 25.220.99 | Word Count Estimation | 19,169 | Date of Issue | 2017-05-31 | Date of Implementation | 2017-12-01 | Quoted Standard | GB/T 21448-2008; GB/T 50698; SY/T 0017; BS EN 15112; NACE RP0186 | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | Summary | This standard specifies the determination, criteria and general requirements for cathodic protection of the outer surface of steel and gas wells. This standard applies to oil and gas wells steel casing outer surface cathodic protection system. |
GB/T 33791-2017: Technical specification for cathodic protection of steel well casings---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.
Technical specification for cathodic protection of steel well casings
ICS 25.220.99
A29
National Standards of People's Republic of China
Technical specification for corrosion protection of cathodic protection for steel well casing
2017-05-31 released
2017-12-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Directory
Preface III
1 Scope 1
2 normative reference document 1
3 Terms and definitions 1
Evaluation of Corrosivity 3
5 Determination of the necessity of cathodic protection 3
6 cathodic protection criteria and design current demand calculation method 4
Design of cathodic protection system for oil well casing
8 Installation of Cathodic Protection System 6
Control of Stray Current
Operation and maintenance of cathodic protection system
11 Corrosion Control Record 9
Appendix A (informative) Casing potential profile Figure 11
Appendix B (informative) E-LogI Test 15
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the China Petroleum and Chemical Industry Association.
This standard is nationalized by the National Anti-Corrosion Standardization Technical Committee (SAC/TC381).
The drafting of this standard. Shenyang Branch Corrosion Control Engineering Technology Center, the National Metal Corrosion Control Engineering Technology Research Center, the Chinese Section
Institute of Metal Research Institute, the corrosion of the International Institute of anti-corrosion Technology (Beijing) Co., Ltd., Beijing Bihaihai Corrosion Protection Industry Co., Ltd.,
China Industrial Anti-corrosion Technology Association, Zhejiang eternal Paint Co., Ltd. for China.
The drafting of this standard. Zhao Jian, Ren Zhenduo, Hu Jiaxiu, Chang Shouwen, Han Enhou, Ke Wei, Di Jianjun, Liu Yanjiang, Jinhui,
Technical specification for corrosion protection of cathodic protection for steel well casing
1 Scope
This standard specifies the determination, criteria and general requirements for cathodic protection of the outer surface of steel and gas bushings.
This standard applies to oil and gas wells steel casing outer surface cathodic protection system.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
Technical code for cathodic protection of buried steel pipes GB/T 21448-2008
GB/T 50698 Technical standard for AC interference protection of buried steel pipelines
Technical standard for DC drainage protection of buried steel pipe in SY/T 0017
BSEN15112 Oil well sleeve External protection for external corrosion (Externalcathodicprotectionofwelcasings)
NACERP0186 oil well casing outer surface cathodic protection application (Applicationofcathodicprotectionforex-
ternalsurfacesofsteelwelcasings
3 terms and definitions
The following terms and definitions apply to this document.
3.1
Casing casing
From the surface into the drilling hole has been lining the wall of the steel pipe.
3.2
Coupling coupling
Used to connect two rounded barrels with internal threads.
3.3
Natural potential self-potential
The potential of the metal surface relative to the reference electrode in the electrolyte under open conditions is indicated in the present standard when the cathodic protection is applied to the electrolyte
The potential of the metal structure relative to the reference electrode.
3.4
Pipe-to-soilpotential
The potential of the pipeline relative to the electrolyte of its adjacent soil.
3.5
Cathodicprotection cathodicprotection
A technique for reducing metal surface corrosion by making the metal surface a cathode of an electrochemical cell.
3.6
Anode anodes
An electrode in an electrochemical cell that undergoes an oxidation reaction (ie, an electron loss).
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