埕岛油田海水钻井液对钻具的腐蚀及防护  

Corrosion of sea water mud on drill pipe and its control

作　　者：丁锐[1] 李健鹰[1] 于连香[1] 邱正松[1] 卢润才[2] 纪春茂[2] 

机构地区：[1]石油大学(华东) [2]胜利石油管理局海洋钻井公司

出　　处：《钻井液与完井液》1997年第5期24-26,共3页Drilling Fluid & Completion Fluid

摘　　要：为了减少海水钻井液对钻具的腐蚀,试验研究了埕岛油田海水的性质、钻井液组成及钻具腐蚀的主要原因。结果表明,海水钻井液对钻具的腐蚀主要是其中的溶解氧和电解质引起的,pH值越低,腐蚀速度越快,当pH值大于10时,腐蚀速度显著变慢;腐蚀速度随环境温度的升高而增大,当超过一定的温度后,则随温度的升高而降低。同时筛选出几种对钻具有缓蚀作用的处理剂。The composition of sea water mud and the corrosion reason of drill pipe are analysed. Dissolved oxygen and electrolyte in sea water mud are the main corrosion factors. Tests indicate that the higher the pH value, the lower the corrosion speed. It is shown that there is a temperature point, below this point, the corrosion speed increase with raising temperature, over this point, it is on the contrary. The optimized corrosion inhibitors are also introduced.

关 键 词：钻具 腐蚀 防护 钻井液 油田 海水腐蚀 

分 类 号：TE980.45[石油与天然气工程—石油机械设备] TE254.4