Corrosion Cause of 3Cr Steel Tubing in a Gas Injection Well
-
摘要: 西部油田某注气井中3Cr钢油管出现腐蚀现象。通过宏观形貌分析、力学性能检测,扫描电镜、X射线能谱仪和X射线衍射分析等方法查找了油管腐蚀原因。结果表明:在注氮气驱件下,油管的内外壁主要发生溶解氧腐蚀,外螺纹端面发生溶解氧腐蚀与缝隙腐蚀;油管腐蚀主要是由于注入氮气中含有氧气而在油管内外壁和端面形成氧腐蚀环境,造成油管材料性能与实际服役的腐蚀环境不匹配。Abstract: Corrosion was observed on the 3Cr steel tubing of a gas injected well in western oilfield. The corrosion causes of the tubing were analyzed by macroscopic inspection, mechanical property measurement, scanning electron microscopy, energy dispersive spectroscopy and X-ray diffraction. The results show that under the nitrogen injection drive condition, dissolved oxygen corrosion mainly occurred in the inner and outer walls of tubing, and dissolved oxygen corrosion and crevice corrosion mainly occurred in the pin end face of the tubing. The corrosion of tubing was caused by the mismatch between the tubing material properties and the corrosion environment in actual service, which was ascribed to the formation of oxygen corrosion environment in the inner and outer walls and end face of tubing due to the oxygen contained in the injected nitrogen.
-
-
[1] 李一波,何天双,胡志明,等.页岩油藏提高采收率技术及展望[J].西南石油大学学报(自然科学版),2021,43(3):101-110. LI Y B,HE T S,HU Z M,et al.A comprehensive review of enhanced oil recovery technologies for shale oil[J].Journal of Southwest Petroleum University (Science ＆ Technology Edition),2021,43(3):101-110.
[2] 李士伦,侯大力,孙雷.因地制宜发展中国注气提高石油采收率技术[J].天然气与石油,2013,31(1):44-47. LI S L,HOU D L,SUN L.Developing gas injection according to local conditions in China to improve oil recovery technology[J].Natural Gas and Oil,2013,31(1):44-47.
[3] 曹学良,郭平,杨学峰,等.低渗透油藏注气提高采收率前景分析[J].天然气工业,2006,26(3):100-102. CAO X L,GUO P,YANG X F,et al.An analysis of prospect of eor by gas injection in low-permeability oil reservoir[J].Natural Gas Industry,2006,26(3):100-102.
[4] 张慧,鞠斌山,苏英杰.塔河油田缝洞型油藏氮气驱见效特征及其影响因素[J].中国海上油气,2020,32(6):99-107. ZHANG H,JU B S,SU Y J.Responding characteristics and influencing factors of nitrogen drive in fracture-vug reservoirs of Tahe oilfield[J].China Offshore Oil and Gas,2020,32(6):99-107.
[5] 赵凤兰,屈鸣,吴颉衡,等.缝洞型碳酸盐岩油藏氮气驱效果影响因素[J].油气地质与采收率,2017,24(1):69-74. ZHAO F L,QU M,WU J H,et al.Influencing factors of the effect of nitrogen gas drive in fractured-vuggy carbonate reservoir[J].Petroleum Geology and Recovery Efficiency,2017,24(1):69-74.
[6] 苏伟,侯吉瑞,郑泽宇,等.缝洞型油藏氮气驱提高采收率效果及其影响因素分析[J].石油科学通报,2017,2(3):390-398. SU W,HOU J R,ZHENG Z Y,et al.The mechanisms and influencing factors analysis of activating the remaining oil by N2 flooding in fractured-cavity reservoirs[J].Petroleum Science Bulletin,2017,2(3):390-398.
[7] 周玉衡,喻高明,周勇,等.氮气驱机理及应用[J].内蒙古石油化工,2007,33(6):101-102. ZHOU Y H,YU G M,ZHOU Y,et al.Mechanism and application of the nitrogen drive[J].Inner Mongolia Petrochemical Industry,2007,33(6):101-102.
[8] 张江江.气液环境下注氮气井管道腐蚀因素和机理研究[J].科学技术与工程,2014,14(29):9-14. ZHANG J J.Study on nitrogen gas pipeline and mechanism of corrosion factors on gas-liquid environment[J].Science Technology and Engineering,2014,14(29):9-14.
[9] 李晓东.注空气过程中井下管柱氧腐蚀规律及防护实验研究[J].科学技术与工程,2018,18(35):18-25. LI X D.Experimental study on oxygen corrosion law and protective of downhole string in air injection process[J].Science Technology and Engineering,2018,18(35):18-25.
[10] 许艳艳,侯帆,丁保东,等.注氮气井井下设备腐蚀原因分析及相应对策[J].腐蚀与防护,2017,38(10):815-817. XU Y Y,HOU F,DING B D,et al.Corrosion analysis of down-hole device in a nitrogen injection well and relevant countermeasures[J].Corrosion ＆ Protection,2017,38(10):815-817.
[11] 王娜,卢志强,石鑫,等.塔河油田氧腐蚀防治技术[J].全面腐蚀控制,2013,27(8):48-50. WANG N,LU Z Q,SHI X,et al.Oxygen corrosion control technology of Tahe oilfield[J].Total Corrosion Control,2013,27(8):48-50.
[12] 喻智明.注氮气驱井筒氧腐蚀行为研究[D].成都:西南石油大学,2017. YU Z M.Study on oxygen corrosion behavior of nitrogen injection wellbore[D].Chengdu:Southwest Petroleum University,2017.
[13] 周权.注空气驱油过程中的管柱腐蚀与防腐工艺研究[D].青岛:中国石油大学(华东),2009. ZHOU Q.Corrosion and anti-corrosion techniques for air injection EOR process[D].Qingdao:China University of Petroleum,2009. [14] 李海奎.注空气过程中井下管柱氧腐蚀防护技术研究[D].青岛:中国石油大学(华东),2015. LI H K.Prevention techniques of oxygen corrosion of downhole string in air injection process[D].Qingdao:China University of Petroleum,2015.
[15] 王温栋,刘强,张力文,等.不同温度火烧驱油工况下油套管用钢的腐蚀行为[J].机械工程材料,2018,42(11):11-16. WANG W D,LIU Q,ZHANG L W,et al.Corrosion behavior of oil casing steel under combustion drive oil condition at different temperatures[J].Materials for Mechanical Engineering,2018,42(11):11-16.
[16] 吕祥鸿,赵国仙.油套管材质与腐蚀防护[M].北京:石油工业出版社,2015. LV X H,ZHAO G X.Material and corrosion protection of oil casing [M].Beijing:Petroleum Industry Press,2015.
[17] 刘丽,王煦,任呈强,等.油管与接箍接头的缝隙腐蚀评价[J].压力容器,2011,28(12):1-4. LIU L,WANG X,REN C Q,et al.Evaluation on crevice corrosion of joint composed of oil tubing and collar[J].Pressure Vessel Technology,2011,28(12):1-4.
[18] 李芳,杨志文,曾文广,等.某注水井P110油管外腐蚀穿孔原因分析[J].材料保护,2021,54(7):155-159. LI F,YANG Z W,ZENG W G,et al.Cause analysis of external corrosion perforation failure of P110 tubing in a water injection well[J].Materials Protection,2021,54(7):155-159.
计量
- 文章访问数: 5
- HTML全文浏览量: 0
- PDF下载量: 2
下载:
