关键词: 淖尔油田, 油管结垢, 腐蚀结垢, 阻垢剂

Abstract: The scaling phenomenon in Nao′er Oilfield influences its normal production badly，and based on the practical and severe scaling situation in this oilfield，an anti-scaling experimental research is carried out.The research mainly investigates the scale inhibition efficiencies of the following frequently-used scale inhibitors：scale inhibitor A，scale inhibitor HYZ，Nanjing-1，Nanjing-2，Nanjing-3 and JL661.The built-up of scale inhibitor A and scale inhibitor HYZ is also tested，and the result shows that the efficiency is the best when the two scale inhibitor is 1∶1 complex.Study on the scale inhibition efficiency to some output of oil/water well in Nao′er Oilfield reveals that when the dosage of the compound scale inhibitor is appropriate，the scale inhibition rate of calcium-magnesium scale can reach more than 96.00%，and that of barium-strontium scale more than 90.00%.

Key words: Nao′er Oilfield, tubing scaling, corrosion and scaling, scale inhibition