油田注水井管线结垢分析及阻垢剂研制与应用  

Scaling analysis of oilfield water injection well pipeline and development and application of scale inhibitor

作　　者：路建萍[1] 沈燕宾[1] 王佳[1] 李俊华[1] 谢元[1] 周渝[1] LU Jian-ping;SHEN Yan-bin;WANG Jia;LI Jun-hua;XIE Yuan;ZHOU Yu(Shaanxi Key Laboratory of Fine Petroleum Chemicals,Shaanxi Research Design Institute of Petroleum and Chemical Industry,Xi’an 710054,China)

机构地区：[1]陕西省石油化工研究设计院陕西省石油精细化学品重点实验室,陕西西安710054

出　　处：《应用化工》2020年第10期2555-2559,2580,共6页Applied Chemical Industry

基　　金：陕西省技术转移与重点科技成果推广计划(2019TG-008)。

摘　　要：青化砭油田注水井管线结垢严重,以马来酸酐-丙烯酸-甲基丙烯酸羟乙酯(MAH)、EDTMPS、PASP和HDTMPA为原料,研制了一种复合型阻垢剂ZGJ-6,能同时高效阻止碳酸钙、硫酸钙、硫酸钡锶垢,当投加量60 mg/L时,对钙盐(碳酸钙、硫酸钙)垢的阻垢率达94.52%,对硫酸钡锶垢的阻垢率达95.32%,阻垢效果优于常规阻垢剂。现场应用实验表明,在管线中投加ZGJ-660 mg/L后,试片光亮无结垢,同压力下的月平均注水量下降幅度和同注水量下的月平均压力提高幅度为2%~3%,变化平缓,从根本上解决了管线的结垢问题。Aiming at the serious problem of scale fouling of water injection wells in Qinghuatuo Oilfield,using the homemade maleic anhydride,acrylic acid,methyl acrylic hydroxyl ethyl ester(MAH),EDTMPS,PASP and HDTMPA as raw material,and developed a composite scale inhibitor ZGJ-6,which can effectively prevent carbonation calcium,calcium sulfate,barium strontium sulfate scale,when the dosage is 60 mg/L,the scale inhibition rate of calcium salt scale reaches 94.52%,and the scale inhibition rate of barium strontium sulfate scale reaches 95.32%,the scale inhibition effect is better than conventional inhibitor.The field application test showed that after adding ZGJ-660 mg/L to the pipeline,the test plate was bright without scaling,and the decrease range of the average monthly injection water volume under the same pressure and the increase range of the average monthly injection water volume under the same pressure were 2%~3%,changing gently,which fundamentally solved the scaling problem of the pipeline.

关 键 词：注水井管线 结垢 复合型阻垢剂 硫酸钙垢 碳酸钙垢 硫酸钡锶垢 

分 类 号：TQ039[化学工程] TE357.6[石油与天然气工程—油气田开发工程]