DataVXCoatingsPaper
journal article·2022-08-28Open access

Identification and Analysis of Corrosion Mechanisms for Ground Pipelines with Hanging Rings

Yuntao Xi, Yidi Li, Yang Yao, Qingming Gan, Yixu Wang, Lei Wang, Lei Wen, Shilei Li, Daoyong Yang, Jiangtao Ji, Shubin Lei

Coatings· Volume 12· Issue 9
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Source abstract

Abstract

Recently, corrosion perforation has been frequently seen in surface pipelines in the oil and gas industry, resulting in operational and environmental challenges. Due to the complex characteristics and mechanisms of such corrosion, a new and pragmatic method has been designed to identify and evaluate the corrosion phenomenon via a hanging ring installed in a surface pipeline. In addition to respectively analyzing the ions of water samples with chemical titration, ion chromatography, and mass spectrometry, the micro-surface morphology of the corroded hanging rings was observed and evaluated by using a scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS), and the surface composition of the corroded hanging rings was analyzed by using X-ray diffraction (XRD). The water ions of each selected position were found to mainly contain Ca2+, Ba2+, SO42−, and HCO3−, while the barium scale and calcium carbonate scale were formed in situ. In addition to the common corrosion induced by CO2, corrosion induced by both CO2 and H2S leads to extremely serious corrosion and scaling in surface pipelines. In addition, the injection dose of corrosion inhibitor was also evaluated.
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Research context

Metals & alloys

OpenAlex topics: Corrosion Behavior and Inhibition · Hydrogen embrittlement and corrosion behaviors in metals · Concrete Corrosion and Durability

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Material Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China

Petroleum Systems Engineering, Faculty of Engineering and Applied Science, University of Regina, Regina, SK S4S 0A2, Canada

Oil&Gas Technology Research Institute of Changqing Oilfield Company, PetroChina, Xi’an 710018, China

National Engineering Laboratory for Exploration & Development of Low Permeability Oil and Gas Fields, Xi’an 710018, China

Metropolitan College, Boston University, Boston, MA 02215, USA

State Key Lab of Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China

Nation Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China

State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China

China Railway First Survey and Design Institute Group Co., Ltd., Xi’an 710043, China

Funding

National Natural Science Foundation of China Project · Young Scientific Research and Innovation Team of the Xi’an Shiyou University · State Key Laboratory of Metastable Materials Science and Technology · State Key Lab of Advanced Metals and Materials · Opening project fund of Materials Service Safety Assessment Facilities · China Scholarship Council Foundation · Postgraduate Innovation and Practical Ability Training Program of the Xi’an Shiyou University

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