Research on Causes of Corrosion Perforation in Changning Shale Gas Gathering Pipelines
The transmission medium of shale gas gathering and transportation system is complex, which is easy to cause corrosion, perforation and leakage in the pipeline, seriously affecting the normal development and production of shale gas field.Based on the sampling analysis of perforated corrosion pipeline...
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Editorial Department of Materials Protection
2021-06-01
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| Series: | Cailiao Baohu |
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| Online Access: | http://www.mat-pro.com/fileup/1001-1560/PDF/20210629.pdf |
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| author | QING Song-zhu, ZHANG Xiao-lin, WEN Zhan, DAN Xia, TANG Yu, KANG Lin, LIAO Ke-xi |
| author_facet | QING Song-zhu, ZHANG Xiao-lin, WEN Zhan, DAN Xia, TANG Yu, KANG Lin, LIAO Ke-xi |
| author_sort | QING Song-zhu, ZHANG Xiao-lin, WEN Zhan, DAN Xia, TANG Yu, KANG Lin, LIAO Ke-xi |
| collection | DOAJ |
| description | The transmission medium of shale gas gathering and transportation system is complex, which is easy to cause corrosion, perforation and leakage in the pipeline, seriously affecting the normal development and production of shale gas field.Based on the sampling analysis of perforated corrosion pipeline and transportation medium in Changning shale gas field, the results showed that the mole fraction of CO2 in the gas quality was 0.44%, and SRB(1.1×105/mL)and Cl-(21 913.14 mg/L)were detected in the water.Using SEM, EDS, XPS and other micro-analysis instruments to analyze the corrosion products in the gas collector, it was found that the corrosion products contained FeCO3(9.31%), FeS(3.54%), and FeS2(19.09%).Results showed that the main cause of the corrosion of the Changning shale gas production pipeline was the synergistic corrosion of CO2, SRB bacteria and Cl-.CO2 dissolved in the liquid film on the surface of the pipe wall, resulting in an acidic corrosion environment, and electrochemical corrosion of CO2 and Fe occurred.Pitting pits were formed and Fe2 +was produced.SRB bacteria transformed  in water quality into H2S, combining with Fe2+ to generate FeS and FeS2, and under the promotion of Cl-, quickly leading to corrosion perforation of pipelines. |
| format | Article |
| id | doaj-art-a08309141b50481e98eebea79c0e8f3d |
| institution | Matheson Library |
| issn | 1001-1560 |
| language | zho |
| publishDate | 2021-06-01 |
| publisher | Editorial Department of Materials Protection |
| record_format | Article |
| series | Cailiao Baohu |
| spelling | doaj-art-a08309141b50481e98eebea79c0e8f3d2025-07-11T06:55:11ZzhoEditorial Department of Materials ProtectionCailiao Baohu1001-15602021-06-0154616616910.16577/j.cnki.42-1215/tb.2021.06.030Research on Causes of Corrosion Perforation in Changning Shale Gas Gathering PipelinesQING Song-zhu, ZHANG Xiao-lin, WEN Zhan, DAN Xia, TANG Yu, KANG Lin, LIAO Ke-xi0(1.PetroChina Southwest Oil and Gas field Company Sichuan Changning Natural Gas Development Co., Ltd., Chengdu 610051, China;2.PetroChina Chuanqing Drilling Engineering Co., Ltd., Chengdu 610051, China;3.Changning Shale Gas Operation Area, Shunan Gas Field, Southwest Oil and Gas Field, PetroChina, Chengdu 610051, China;4.State Key Laboratory of Oil and Gas Reservoir Geology and Development Engineering, Southwest Petroleum University, Chengdu 610051, China)The transmission medium of shale gas gathering and transportation system is complex, which is easy to cause corrosion, perforation and leakage in the pipeline, seriously affecting the normal development and production of shale gas field.Based on the sampling analysis of perforated corrosion pipeline and transportation medium in Changning shale gas field, the results showed that the mole fraction of CO2 in the gas quality was 0.44%, and SRB(1.1×105/mL)and Cl-(21 913.14 mg/L)were detected in the water.Using SEM, EDS, XPS and other micro-analysis instruments to analyze the corrosion products in the gas collector, it was found that the corrosion products contained FeCO3(9.31%), FeS(3.54%), and FeS2(19.09%).Results showed that the main cause of the corrosion of the Changning shale gas production pipeline was the synergistic corrosion of CO2, SRB bacteria and Cl-.CO2 dissolved in the liquid film on the surface of the pipe wall, resulting in an acidic corrosion environment, and electrochemical corrosion of CO2 and Fe occurred.Pitting pits were formed and Fe2 +was produced.SRB bacteria transformed  in water quality into H2S, combining with Fe2+ to generate FeS and FeS2, and under the promotion of Cl-, quickly leading to corrosion perforation of pipelines.http://www.mat-pro.com/fileup/1001-1560/PDF/20210629.pdfshale gas; gas gathering pipelines; internal corrosion |
| spellingShingle | QING Song-zhu, ZHANG Xiao-lin, WEN Zhan, DAN Xia, TANG Yu, KANG Lin, LIAO Ke-xi Research on Causes of Corrosion Perforation in Changning Shale Gas Gathering Pipelines Cailiao Baohu shale gas; gas gathering pipelines; internal corrosion |
| title | Research on Causes of Corrosion Perforation in Changning Shale Gas Gathering Pipelines |
| title_full | Research on Causes of Corrosion Perforation in Changning Shale Gas Gathering Pipelines |
| title_fullStr | Research on Causes of Corrosion Perforation in Changning Shale Gas Gathering Pipelines |
| title_full_unstemmed | Research on Causes of Corrosion Perforation in Changning Shale Gas Gathering Pipelines |
| title_short | Research on Causes of Corrosion Perforation in Changning Shale Gas Gathering Pipelines |
| title_sort | research on causes of corrosion perforation in changning shale gas gathering pipelines |
| topic | shale gas; gas gathering pipelines; internal corrosion |
| url | http://www.mat-pro.com/fileup/1001-1560/PDF/20210629.pdf |
| work_keys_str_mv | AT qingsongzhuzhangxiaolinwenzhandanxiatangyukanglinliaokexi researchoncausesofcorrosionperforationinchangningshalegasgatheringpipelines |