摘要
塔里木盆地塔中Ⅰ号气田为典型的酸性气田,生产井井筒面临严重的腐蚀隐患。结合塔中Ⅰ号气田的生产情况,对影响井筒腐蚀的各种因素(CO2及H2S含量、温度和流速等)进行了系统研究,并确定了:①塔中Ⅰ号气田各井的井筒腐蚀受硫化氢和二氧化碳的共同影响,以硫化氢腐蚀为主,约占70%;②90℃±是井筒腐蚀发生最严重的温度区域;③塔中Ⅰ号气田各井的流速多数<1m/s,存在垢下腐蚀,个别井流速达4.9m/s,存在冲刷腐蚀。根据井筒腐蚀的各主要影响因素,提出了应对井筒腐蚀的防护方法和建议。
Tazhong--1 gas field in Tarim Basin is a typical acidic gas field,and the shafts of production wells face serious erosion hazard. According to actual production in Tazhong--1 gas field,the authors systematically studied various factors affect shaft corrosion （content of CO2 and H2S,temperature and flow velocity） and determined that ① shaft corrosion was influenced by both hydrogen sulfide and carbon dioxide,and hydrogen sulfide corrosion was the mainly factor,account for 70% ± ; ② 90 ℃ ± is the most serious shaft corrosion temperature; ③ the flow velocity of most gas wells in Tazhong--1 gas field were below 1 m/s,existed fouling corrosion,and the flow velocity of individual wells were up to 4. 9 m/s,existed flush corrosion. According to the main factors of shaft corrosion, corresponding suggestions and methods to protect shaft corrosion were put forward.
出处
《世界地质》
CAS
CSCD
2010年第2期352-356,共5页
World Geology
基金
中国石油塔里木油田重点科技攻关项目(041008060030)
