页岩气中不同耐蚀合金堆焊弯管腐蚀行为研究
Research on corrosion mechanism of pipe elbow with weld overlay using different corrosion-resistant alloys in shale gas field
浏览(862) 下载(24)
- 引用格式:
-
刘俊,李牧松,陈博文,张付峰,昝林峰,唐昕,马敬轩.页岩气中不同耐蚀合金堆焊弯管腐蚀行为研究[J].天然气与石油,2022,40(4):114-118.doi:10.3969/j.issn.1006-5539.2022.04.015
LIU Jun, LI Musong, CHEN Bowen, ZHANG Fufeng, ZAN Linfeng, TANG Xin, MA Jingxuan.Research on corrosion mechanism of pipe elbow with weld overlay using different corrosion-resistant alloys in shale gas field[J].Natural Gas and Oil,2022,40(4):114-118.doi:10.3969/j.issn.1006-5539.2022.04.015
- DOI:
- 10.3969/j.issn.1006-5539.2022.04.015
- 作者:
- 刘俊1 李牧松2 陈博文3 张付峰4 昝林峰1 唐昕1 马敬轩4
LIU Jun1, LI Musong2, CHEN Bowen3, ZHANG Fufeng4, ZAN Linfeng1, TANG Xin1, MA Jingxuan4
- 作者单位:
- 1. 中国石油工程建设有限公司西南分公司, 四川 成都 610041; 2. 中国石油工程建设有限公司， 北京 100120; 3. 绵阳城市学院鼎利学院, 四川 绵阳 621000; 4. 郑州万达重工股份有限公司, 河南 郑州 451162
1. CPECC Southwest Company, Chengdu, Sichuan, 610041, China; 2. CPECC, Beijing, 100120, China; 3. Mianyang City College Dingli College, Mianyang, Sichuan, 621000, China; 4. Zhengzhou Wanda Heavy Industry Co., Ltd., Zhengzhou, Henan, 451162, China
- 关键词:
- 页岩气;堆焊弯管;镍基合金;腐蚀
Shale gas; Pipe elbow with weld overlay; Inconel alloy; Corrosion
- 摘要:
页岩气采集系统介质复杂,易造成设备及管线内腐蚀穿孔泄漏,严重影响页岩气田正常开发与生产。把碳钢冷弯管、堆焊825冷弯管和堆焊316L冷弯管设计成实验管段,通过模拟喷砂实验及现场实验研究不同材料的耐蚀性能。结果表明,碳钢冷弯管受冲刷腐蚀影响较大且容易出现点蚀,堆焊825冷弯管和堆焊316L冷弯管冲刷腐蚀影响较小且无点蚀。因此,页岩气开发用的弯管选用堆焊825冷弯管具有较高的性价比,可以满足实际需求,堆焊316L冷弯管可作为弯管的备选材质方案。研究结果可为页岩气田弯管选材提供参考。
The gas composition in shale gas production and gathering system is complex and can easily cause corrosion and perforation leading to leakages in equipment and piping, seriously affecting the normal development and production to shale gas field. Cold-formed carbon steel pipes and cold-formed pipes with Inconel 825 and 316L weld overlay are designed as experimental pipe sections to assess their corrosion resistant properties. Simulated sandblast tests and field tests were conductedon these test sections. The tests results showed that carbon steel pipe elbow were affected by erosion corrosion and prone to pitting corrosion, while pipe elbows with Inconel 825 and 316L weld overlay were less affected by erosion corrosion, with no sign of pitting. Hence, pipe elbows with Inconel 825 weld overlay has higher cost effectiveness and meet site requirements, and are recommended for shale gas development. Pipe elbows with 316L weld overlay could be the alternative solution. The research resultsprovide reference for material selection of pipe elbows in shale gas field development.
