风城油田超稠油采出水处理工艺及应用
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摘要
风城油田超稠油采出水具有"含砂高、黏度高、密度高"的特点,大量不易分离的粉砂和泥质附在油中,其乳化稳定性强,处理难度大;沉降脱水罐来水含油量>10 000 mg/L,悬浮物>500 mg/L,高含油及悬浮物对采出水处理系统影响及冲击较大。采用"两级除油+混凝反应+两级过滤"工艺对超稠油采出水进行处理,处理后净化水含油量≤2 mg/L,悬浮物≤2 mg/L,污水处理合格率100%,污水回用率100%,回用油田注汽锅炉。实现了污水的循环利用,节约清水费用2 463.75万元,可充分利用高温采出水热能,年均节约天然气用量约5 475×10~4 Nm~3,节约天然气费用5 365.5万元。
The produced water during super heavy oil production in FengCheng Oilfield features a high density,high viscosity,high content of colloidal asphaltene.The large quantity of sediment and mud was hard to treat due to its relatively high emulsification stability.Furthermore,the oil content in the settling dehydration tank exceeded 10 000 mg/L,and the suspended matter exceeded 500 mg/L,posed significant impact on the water treatment system.A series technologies including gravity degreasing,dissolved air flotation,coagulation reaction,pressure filtration process was applied to treat the produced water from super heavy oil production.The oil content after treatment could reach less than 2 mg/L,and the sediment content of less than 2 mg/L.The effluent was reused for steam-injection boiler by 100%.As a result,this type of treatment could fully utilize the heat energy,and achieve recycle and reuse of the produced water.A total of effluent fee of 2 464.75 × 10~4 Yuan,natural gas usage of 5 475×10~4 Nm~3 could be saved.
The produced water during super heavy oil production in FengCheng Oilfield features a high density,high viscosity,high content of colloidal asphaltene.The large quantity of sediment and mud was hard to treat due to its relatively high emulsification stability.Furthermore,the oil content in the settling dehydration tank exceeded 10 000 mg/L,and the suspended matter exceeded 500 mg/L,posed significant impact on the water treatment system.A series technologies including gravity degreasing,dissolved air flotation,coagulation reaction,pressure filtration process was applied to treat the produced water from super heavy oil production.The oil content after treatment could reach less than 2 mg/L,and the sediment content of less than 2 mg/L.The effluent was reused for steam-injection boiler by 100%.As a result,this type of treatment could fully utilize the heat energy,and achieve recycle and reuse of the produced water.A total of effluent fee of 2 464.75 × 10~4 Yuan,natural gas usage of 5 475×10~4 Nm~3 could be saved.
引文
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[4]刘东明,刘俊德,马良.风城超稠油污水处理效果的影响因素与对策[J].油气田环境保护,2013,24(4):28-30.
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[6]刘东明.风城油田超稠油SAGD采出液高温密闭脱水技术D].东北石油大学学报,2014,38(3):87-95.
[7]夏福军,任彦中,隋向楠.气水反冲洗工艺提高油田采出水过滤器再生效果[J].油气田环境保护,2014,24(4):42-45.
[8]陈鹏,陈忠喜,白春云.大庆油田采出水处理工艺技术现状及其认识[J].油气田地面工程,2018,37(7):19-24.
[2]王爱军,王月华,赵胜,等.新疆油田采出水处理技术[J].油气田环境保护,2003,13(2):11-14.
[3]唐丽.离子调整旋流反应法污水处理技术在新疆油田的应用[J].承德石油高等专科学校学报,2008,13(2):4-8.
[4]刘东明,刘俊德,马良.风城超稠油污水处理效果的影响因素与对策[J].油气田环境保护,2013,24(4):28-30.
[5]王鸽,边田镇,孙万里.超稠油污水深度处理工艺技术[D].油气田环境保护,2009,19(增刊):32-36.
[6]刘东明.风城油田超稠油SAGD采出液高温密闭脱水技术D].东北石油大学学报,2014,38(3):87-95.
[7]夏福军,任彦中,隋向楠.气水反冲洗工艺提高油田采出水过滤器再生效果[J].油气田环境保护,2014,24(4):42-45.
[8]陈鹏,陈忠喜,白春云.大庆油田采出水处理工艺技术现状及其认识[J].油气田地面工程,2018,37(7):19-24.
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