Sulfate reducing bacteria is the main cause of the oil pipeline corrosion, the use of fungicides is the most commonly method to control the corrosion that caused by sulfate re-ducing bacteria.In the light of treating oilfield polymer bearing wastewater,firstly we should analysis the water quality in order to determine the characteristic of the oilfield sewage;on such a basis, to kill the bacteria, alternating bactericide between poly quaternary ammonium salt and BIS quaternary ammonium salt,the inhibitor is imidazole type cationic.By measur-ing the concentration of sulfate-reducing bacteria before and after oilfield sewage treatment, we study the effect of bactericide filling mode on germicidal efficacy, combined with labora-tory and field tests,the germicidal efficacy of the two modes of the impact filling and contin-uous filling bactericide was compared and analyzed. Carrying out continuous filling test for multiple concentrations, the identified bactericidal technology program is continuous filling bactericide 60 mg/L + inhibitor 20 mg/L.The results show that the content of sulfate reduc-ing bacteria in oilfield sewage is controlled long term and efficiently by continuous filling bac-tericide, which the bacterial concentration decreased from 600/mL to under 25/mL, and the corrosion rate decreased from 0.130 mm/a to 0.040 mm/a.%硫酸盐还原菌是引发管路腐蚀的主要原因之一，使用杀菌剂是目前控制硫酸盐还原菌腐蚀最常用的方法。针对油田含聚污水水质特性，选用的杀菌剂分别为聚季铵盐型与双聚季铵盐型，两种药剂交替使用；缓蚀剂为阳离子咪唑啉型。通过对污水处理前后硫酸盐还原菌浓度的测定，试验了杀菌剂投加方式对杀菌效果的影响。结合室内研究和现场试验，对冲击投加和连续投加两种方式下的杀菌效果进行了对比分析，确定了适应含聚污水处理的杀菌技术方案，即连续投加杀菌剂60 mg/L+缓蚀剂20 mg/L。连续投加杀菌剂可长期有效地控制污水中硫酸盐还原菌，使其浓度由600/mL降低为25/mL以下，腐蚀速率由0.130 mm/a降低为0.040 mm/a。
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