摘要
采用层次分析法(AHP)研究了含水率、CO2分压、温度、金属含Cr量等因素对井下油套管腐蚀破坏的影响权重,并以此为基础形成了一套生产井腐蚀可能性的快速排序法。通过计算得到含水率、CO2分压、温度、金属含Cr量对井下管柱腐蚀影响的权重为0.28、0.18、0.45、0.09。利用腐蚀可能性的快速排序法,评估了3个腐蚀环境的腐蚀风险大小,与室内实验结果一致。研究结果可用于腐蚀环境的快速评价,为有效预防井下管柱发生腐蚀破坏有一定指导意义。
The influence weight of water content,partial pressure of CO2,temperature and Cr content in metal on the corrosion damage of downhole string was studied by using analytic hierarchy process(AHP).Based on this,a quick ranking method for corrosion possibility of production wells was formed.Through calculation,the weight of water content,CO2 partial pressure,temperature and metal Cr content on downhole string corrosion was as follows:0.28,0.18,0.45,0.09.The corrosion risk of three corrosive environments was evaluated by the quick ranking method of corrosion possibility,which was consistent with the results of laboratory experiments.The research results can be used for rapid evaluation of corrosion environment,and has certain guiding significance for effectively preventing corrosion damage of downhole string.
作者
张启龙
张晓诚
韩耀图
李进
陈彬
ZHANG Qi-long;ZHANG Xiao-cheng;HAN Yao-tu;LI Jin;CHEN Bin(CNOOC Tianjin Branch,Tianjin 300459,China;State Key Laboratory of Offshore Oil Exploitation,Tianjin 300459,China)
出处
《当代化工》
CAS
2020年第11期2515-2518,共4页
Contemporary Chemical Industry
基金
国家自然科学基金项目,多重耦合下的页岩油气安全优质钻井理论(项目编号:51490652)
国家科技重大专项,渤海油田高效开发示范工程(项目编号:2016ZX05058)
关键词
井下管柱
腐蚀风险
权重
层次分析法
排序
Downhole string
Corrosion risk
Influence weight
Analytic hierarchy process(AHP)
Ranking method
