论文部分内容阅读
油田试水回注设备腐蚀非常严重,对污水进行调查后。分析腐蚀的主要原因:开放式流程中主要是氧腐蚀;密闭流程中主要是细菌腐蚀。针对油田污水的腐蚀、进行了缓蚀剂研究。从上百种配方中,筛选出《805》为最好的缓蚀阻垢配方。它以钼酸盐为主,有机磷酸盐与无机磷酸盐复配,并加入少量并骈三氮唑。经现场动态模拟试验,投加8～10ppm,缓蚀率达70％左右。从81年7月底现场工业性试验以来,缓蚀率达60～75％,阻垢率在90％以上,污水中含铁由原来8mg/l降到2mg/l,沿程增加很少,大大减缓了设备的腐蚀。此配方用量少,效果好,使用方便,对恶劣的油田污水条件,可达到满意的缓蚀效果。
Oilfield test water injection equipment corrosion is very serious, after the investigation of sewage. Analysis of the main causes of corrosion: the open process is mainly oxygen corrosion; closed process is mainly bacterial corrosion. Aiming at the corrosion of oilfield sewage, the corrosion inhibitor was researched. From hundreds of formulations, filter out “805” as the best corrosion and scale inhibition formula. It is dominated by molybdate, organic phosphates and inorganic phosphate compound, and add a small amount of triazole and triazole. After field dynamic simulation test, dosing 8 ~ 10ppm, corrosion inhibition rate of about 70%. Since the end of July 81 industrial test field, the corrosion rate of 60 to 75%, scale inhibition rate of 90% or more, the iron in the sewage from the original 8mg / l down to 2mg / l, along the way to increase very little, greatly Slow down the corrosion of equipment. This formula with less dosage, good effect, easy to use, the poor conditions of the oil field wastewater, can achieve satisfactory corrosion inhibition.