聚环氧琥珀酸对油田污水中硫酸锶/钡垢的阻垢性能及阻垢机制研究
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摘要
以自制聚环氧琥珀酸(PESA)为研究对象,考察其相对分子质量对油田污水中硫酸锶/钡垢的阻垢性能,并将PESA与常用阻垢剂进行性能比较。结果表明:PESA相对分子质量对其阻垢性能有明显的影响,对于不同浓度的成垢离子、不同种类的垢,要选择不同的相对分子质量和合适的用量;PESA是一种高效的阻硫酸锶/钡垢的阻垢剂,针对含500 mg/L以下锶离子的污水相对分子质量500~1 000较好,针对含1 000 mg/L以上锶离子的污水相对分子质量约2000较好,用量3~8 mg/L时阻垢率均可超过95%;对于阻硫酸钡垢,其阻垢性能优于油田常用阻垢剂,且PESA与PAA有复配效应,对于含1 000 mg/L Ba~(2+)的水系,PESA与PAA在比例为1∶3,用量为100 mg/L时,阻垢率比单独使用提高近20%;PESA主要是通过引起晶格畸变、扰乱晶体正常生长以及螯合增溶等机制起到阻垢作用。
The self-made polyepoxysuccinic acids(PESA) were prepared and the scale inhibition effect of the relative molecular weight on barium sulfate and strontium sulfate in the oilfield sewage were investigated.And the scale inhibition performance between PESA and traditional scale inhibitor was compared.The results show that the molecular weight of PESA has an obvious influence on the scale inhibition.PESA with different molecular weights and different concentrations are selected in terms of different concentrations of scale-forming ions and different kinds of scales.It is also found that PESA is an efficient scale inhibitor for strontium/barium sulfate.The relative molecular weight of 500-1 000 and 2 000 is feasible to oilfield sewage containing 500 mg/L and 1 000 mg/L Sr~(2+) respectively.The scale inhibition rate can be up to 95% with 3-8 mg/L PESA.The scale inhibition performance of PESA is better than that of the traditional scale inhibitor for the oilfield.Moreover,the synergistic effect of PESA and PAA is found.Compared with the results obtained by PESA,the scale inhibition rate is improved for 20%,when PESA and PAA are at a ratio of 1∶3,and the total concentrationis 100 mg/L.The PESA inhibition mechanisms mainly are lattice distortion,charge dispersion and chelating solubilization.
The self-made polyepoxysuccinic acids(PESA) were prepared and the scale inhibition effect of the relative molecular weight on barium sulfate and strontium sulfate in the oilfield sewage were investigated.And the scale inhibition performance between PESA and traditional scale inhibitor was compared.The results show that the molecular weight of PESA has an obvious influence on the scale inhibition.PESA with different molecular weights and different concentrations are selected in terms of different concentrations of scale-forming ions and different kinds of scales.It is also found that PESA is an efficient scale inhibitor for strontium/barium sulfate.The relative molecular weight of 500-1 000 and 2 000 is feasible to oilfield sewage containing 500 mg/L and 1 000 mg/L Sr~(2+) respectively.The scale inhibition rate can be up to 95% with 3-8 mg/L PESA.The scale inhibition performance of PESA is better than that of the traditional scale inhibitor for the oilfield.Moreover,the synergistic effect of PESA and PAA is found.Compared with the results obtained by PESA,the scale inhibition rate is improved for 20%,when PESA and PAA are at a ratio of 1∶3,and the total concentrationis 100 mg/L.The PESA inhibition mechanisms mainly are lattice distortion,charge dispersion and chelating solubilization.
引文
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[8]杜剑强,苏明瑾,姜翠玉,等.聚环氧琥珀酸的合成及其相对分子质量与阻垢性能的关系[J].油田化学,2014,31(1):111-116.DU Jianqiang,SU Mingjin,JIANG Cuiyu,et al.Synthesis of polyepoxysuccinic acid and study on the relationship between relative molecular weight and scale inhibition performance[J].Oilfield Chemistry,2014,31(1):111-116.
[9]侯振宇.油井高钙、锶、钡环境下高效阻垢剂的制备[D].西安:西北工业大学,2006.HOU Zhenyu.Synthesis and the scale inhibition of high efficient scale inhibitor for Calcium,Strontium,Barium ions with high concentration in the oil field[D].Xian:Northwestern Polytechnical University,2006.
[10]闵乃本.晶体生长的物理基础[M].上海:上海科学技术出版社,1982.
[11]高书峰.绿色阻垢剂聚环氧琥珀酸的合成及阻垢机制研究[D].成都:四川大学,2007.GAO Shufeng.The study of synthesis and scale inhibition mechanics of contamination free scale inhibitor Polyepoxysuccinic acid[D].Chengdu:Sichuan University,2007.
[2]周守为.海上油田高效开发技术探索与实践[J].中国工程科学,2009,11(10):55-60.ZHOU Shouwei.Exploration and practice of offshore oilfield effective development technology[J].Engineering Sciences,2009,11(10):55-60.
[3]文守成,何顺利,顾岱鸿,等.高含钡条件下硫酸钡防垢剂的研究及室内评价[J].科学技术与工程,2009,9(19):5643-5647.WEN Shoucheng,HE Shunli,GU Daihong,et al.Research on barium sulfate scale inhibitors in high barium concentration and evaluation in laboratory[J].Science Technology and Engineering,2009,9(19):5643-5647.
[4]朱洪涛.绿色水处理剂的研究进展[J].工业安全与环保,2009,35(6):26-27.ZHU Hongtao.Research progress of green water treatment agents[J].Industrial Safety and Environmental Protection,2009,35(6):26-27.
[5]王风云,吕志芳,董伟,等.聚环氧琥珀酸钠的合成及阻垢性能[J].应用化学,2001,18(9):446-448.WANG Fengyun,LZhifang,DONG Wei,et al.Synthesis and scale-inhibiting property of po Iyepoxysuccinic sodium[J].Chinese Journal of Appiied Chemistry,2001,18(9):446-448.
[6]雷武,王风云,夏明珠.绿色阻垢剂聚环氧琥珀酸的合成与阻垢机制初探[J].化工学报,2006,57(9):2207-2213.LEI Wu,WANG Fengyun,XIA Mingzhu.Synthesis and its scale inhibition effect of green scale inhibitor polyepoxysuccinic acid[J].Journal of Chemical Industry and Engineering,2006,57(9):2207-2213.
[7]何亮.聚环氧琥珀酸的相对分子质量控制及相对分子质量与性能间的关系[D].北京:北京化工大学,2007.HE Liang.Study on control the relative molecular weight of green water treatment agent PESA and relation between relative molecular weight and its properties[D].Beijing:Beijing University of Chemical Technology,2007.
[8]杜剑强,苏明瑾,姜翠玉,等.聚环氧琥珀酸的合成及其相对分子质量与阻垢性能的关系[J].油田化学,2014,31(1):111-116.DU Jianqiang,SU Mingjin,JIANG Cuiyu,et al.Synthesis of polyepoxysuccinic acid and study on the relationship between relative molecular weight and scale inhibition performance[J].Oilfield Chemistry,2014,31(1):111-116.
[9]侯振宇.油井高钙、锶、钡环境下高效阻垢剂的制备[D].西安:西北工业大学,2006.HOU Zhenyu.Synthesis and the scale inhibition of high efficient scale inhibitor for Calcium,Strontium,Barium ions with high concentration in the oil field[D].Xian:Northwestern Polytechnical University,2006.
[10]闵乃本.晶体生长的物理基础[M].上海:上海科学技术出版社,1982.
[11]高书峰.绿色阻垢剂聚环氧琥珀酸的合成及阻垢机制研究[D].成都:四川大学,2007.GAO Shufeng.The study of synthesis and scale inhibition mechanics of contamination free scale inhibitor Polyepoxysuccinic acid[D].Chengdu:Sichuan University,2007.