西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (3): 155-158.DOI: 10.3863/j.issn.1674-5086.2010.03.030

• 油气化学工程与化工 • Previous Articles     Next Articles

EXPERIMENTAL STUDY ON EVALUATION OF SCALE INHIBITORS IN NAO′ER OILFIELD

ZHENG Yun-ping1 LIANG Fa-shu1 LI Hong-jian1 LI Lei1 LI Hong-wei2   

  1. 1.School of Petroleum Engineering，Southwest Petroleum University，Chengdu Sichuan 610500，China；2.Research Institute of Drilling & Production Technology，Qinghai Oilfield Company，CNPC，Dunhuang Gansu 736200，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-06-20 Published:2010-06-20

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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

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