The Research of Bohai Sea-Based Annulus Protection Fluid
International Journal of Oil, Gas and Coal Engineering
Volume 6, Issue 6, November 2018, Pages: 190-195
Received: Nov. 8, 2018;
Accepted: Dec. 4, 2018;
Published: Dec. 26, 2018
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Ren Yi, CNOOC Energy Technology & Services LTD., Tianjin, China
Lu Yuan, CNOOC Energy Technology & Services LTD., Tianjin, China
Zhang Mao, CNOOC Energy Technology & Services LTD., Tianjin, China
Cheng Yan, CNOOC Energy Technology & Services LTD., Tianjin, China
Sun Jixing, CNOOC Energy Technology & Services LTD., Tianjin, China
Wang Zhongguang, CNOOC Energy Technology & Services LTD., Tianjin, China
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The advantages and disadvantages of oil-based and freshwater-based annulus protection fluids were compared. According to the characteristics of freshwater shortage on offshore platforms, the quality of Bohai sea water was analyzed in detail. The sterilization effect of various fungicides was evaluated by extinction dilution method in the laboratory, and the quaternary ammonium salt YHZWJ-15 was determined as one of the basic components. After that, the method of industry evaluation standard was used to conclude that polyphosphate BH-701 has excellent scale prevention performance. For the most important corrosion inhibitor in the system, BHH-509, which is composed of gluconate, organic amine, zinc salt and organic phosphonic acid copolymer, is successfully compounded by static corrosion rate method. Finally, the polarization curve was used to analyze the action mechanism of the annulus protection fluid, and the basic ratio was seawater + 0.5% YHZWJ-15 + 0.01% BHF-701A + 0.01% thiourea + 0.5% BHH-509. It can reduce the corrosion rate to 0.0051 mm/a and the corrosion inhibition rate can reach more than 95%.
Annulus Protection Fluid, Anti-salt Corrosion Inhibitor, Bactericide, Scale Inhibitor, Bohai Oilfield
To cite this article
The Research of Bohai Sea-Based Annulus Protection Fluid, International Journal of Oil, Gas and Coal Engineering.
Vol. 6, No. 6,
2018, pp. 190-195.
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/
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LIU Qingyun, GAO Feng, LUO Yue, et al. The development of well annulus protection technology [J]. Henan Chemical Industry, 2010, 27 (10): 12-14.
LI Xiaolan, LI Ling, ZHAO Yonggang, et al. The research and application of casing annulus protection fluid [J]. Drilling fluid and completion fluid, 2010, 27 (6): 61-64.
WANG Zhongguang, SUN Jixing. The research report of water-based annulus protection fluid [R], CNOOC Energy Technology & Services-Oilfield Technology Services Co., 2012. 11.
ZHENG Lihui, ZHANG Jinbo, YANG Hu. Study and application on new annular protecting fluid corrosion [J]. Oil Drilling &Production Technology, 2004, 26 (2): 13-16.
SY/T 5273 -2000 Evaluation method for behavior of corrosion inhibitor for produced water of oilfield [S].
SY/T 5673 -1993 Evaluation method for behavior of scale inhibitor of oilfield [S].
SY/T 5890 -1993 Evaluation method for behavior of bactericide of oilfield [S].
SONG Zhaohui, LI Zhoujun, XUE Yuzhi. Study and Application of Clay-free Salt Annular Protective Fluid [J]. Drilling Fluid & Completion Fluid, 2013, 30 (4): 49-51.
LUO Yanan. The marine erosion-corrosion electrochemical detections of metallic materials [D]. Tian Jin: Tianjin University, 2006.
WU Junwen, JIA Wenfeng, LEI Qun et al. Research and Performance Evaluation of Annulus Protection Fluid for Injection and Production Well of Gas Storage [J]. Oilfield Chemistry, 2017, 34 (2): 329-334.
YU Lanlan, ZHENG Kai, LI Yan. Synthesis and Performance Evaluation of Silica Scale Inhibitou ACAA [J]. Oilfield Chemistry, 2017, 34 (4): 694-698.
GUO Xuehui, WANG Dong, ZHAO Yi, et al. Study on seawater corrosion inhibitors [J]. Liaoning Chemical Industry, 2012, 41 (1): 15-17.
LU Yuan, ZHAO Jingmao, ZHANG Mao, et al. Development of CO2/H2S Corrosion Inhibitors in the Mixed Water Injection System of Offshore Oilfield in the Bohai Sea [J]. Surface Technology, 2018, 47 (10): 59-65.
MU Zhenjun, DU Min. The study of inhibitive mechanism of corrosion inhibitors for carbon steel in natural seawater [J]. Journal of Chinese society for corrosion and protection, 2005, 25 (4): 205-208.
ZHAO Xiangyang, MENG Yingfeng, HOU Xutian et al. Corrosivity analysis of tubing-casing environment and optimization of packer fluids for Y oilfield [J]. Corrosion Science and Protection Technology, 2017, 29 (1): 91-96.