摘要
顺南区块的腐蚀环境非常特殊,超高温、高压、高含CO_2、低含H_2S、高矿化度的多种组合极具挑战性,特别是井下温度超过200℃,常用的不锈钢材质的油套管和井下工具很难满足施工作业需要,高级不锈钢材质的油套管又缺乏在该工况中的实验和现场使用经验,如何经济、安全选材成为顺南区块高效开发亟待解决的问题。通过对13Cr-P110超级马氏体不锈钢、2205双相不锈钢和2507超级双相不锈钢三种材料模拟顺南工况下腐蚀行为进行实验研究,认为顺南井区的生产管柱可以考虑采用双相不锈钢和镍基合金两种材质管柱的组合,在双相不锈钢开裂敏感温度区采用镍基合金管柱。
Corrosive environment is very special in Shunnan block,such as HTHP,high CO_2,low H_2S and hypersalinity,especially,when downhole temperature is above 200 degrees Celsius,the conventional stainless steel casing and downhole tools are difficult to meet the construction needs. How to choose the tubing material safely became the urgent problems in Shunnan block. In order to solve the problem,the corrosion about13Cr- P110 super martensitic stainless steel,duplex stainless steel 2205 and 2507 super duplex stainless steel was studied under stimulating Shunnan block conditions,the research results showed that production pipe should adopt the combination of duplex stainless steel and nickel based alloy in Shunnan well block,nickel base alloy tubing were used in biphase stainless steel cracking temperature sensitive area.
出处
《钻采工艺》
CAS
北大核心
2016年第2期47-49,3,共3页
Drilling & Production Technology
