低界面张力复合泡沫体系研究
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摘要
通过测定表面张力、表面扩张黏弹模量、界面张力,起泡体积、半衰期等多个参数,优选出了既具有良好起泡能力,又有较低界面张力的复合泡沫体系,考察了该体系在非均质模型上的驱油性能。实验结果表明:氟碳起泡剂的起泡性能较佳,但仅有BS起泡剂能将界面张力降到10~(-2) mN/m;较佳的起泡剂配方为0.1%BS甜菜碱+0.08%起泡甜菜碱+0.12%氟碳起泡剂+1 500 mg/L部分水解聚丙烯酰胺,该体系具有较好的调驱能力,能够将综合采收率提高15%。
Foam flooding is a kind of enhanced oil recovery(EOR) technology with good flooding ability.The surface tension,surface expansion of multiple parameters viscoelastic modulus, interfacial tension, foaming volume and half-life were measured. Through these parameters, a composite foam system, which owned not only good foaming ability, but also lower interfacial tension, was preferred, the flooding effects of the system on non-homogeneous model were performanced.The results showed that: the best properties of foaming is fluorocarbon surfactant gas the best foaming properties, but the interfacial tension reduces to 10~(-2) mN/m when only the BS surfactant is used.By the evaluation of different complex systems, the best foaming agent formula is 0.1% BS blistering betaine + 0.08% betaine + 0.12% fluorocarbon surfactant + 1 500 mg/L polymer, which has the a good ability of profile control and flooding and increases comprehensive recovery by 15%.
Foam flooding is a kind of enhanced oil recovery(EOR) technology with good flooding ability.The surface tension,surface expansion of multiple parameters viscoelastic modulus, interfacial tension, foaming volume and half-life were measured. Through these parameters, a composite foam system, which owned not only good foaming ability, but also lower interfacial tension, was preferred, the flooding effects of the system on non-homogeneous model were performanced.The results showed that: the best properties of foaming is fluorocarbon surfactant gas the best foaming properties, but the interfacial tension reduces to 10~(-2) mN/m when only the BS surfactant is used.By the evaluation of different complex systems, the best foaming agent formula is 0.1% BS blistering betaine + 0.08% betaine + 0.12% fluorocarbon surfactant + 1 500 mg/L polymer, which has the a good ability of profile control and flooding and increases comprehensive recovery by 15%.
引文
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[12] 王海波,肖贤明.泡沫复合驱体系稳定性及稳泡机理研究[J].钻采工艺,2008,1(31):117-120.
[13] 吴文祥,姜海峰.多元泡沫分流作用及其驱油效果影响因素研究[J].油田化学,2002,19(2):173-177.
[14] 许关利,刘宏生,杨莉,等.超低界面张力泡沫驱油方案的优化[J].油气田地面工程,2011,30(2):49-51.
[2] 李玉飞,孟英峰,聂政远,等.空气钻井提高钻速机理研究[J].石油钻探技术,2006,34(4):9-11.
[3] 李治龙,钱武鼎.我国油田泡沫流体应用综述[J].石油钻采工艺,1993,15(6):88-94.
[4] 吴文祥,徐景亮,崔茂蕾.起泡剂发泡特性及其影响因素研究[J].西安石油大学学报:自然科学版,2008,23(3):72-75.
[5] 赵仁保,岳湘安,柯文奇,等.氮气泡沫体系稳定性的影响因素研究[J].石油学报,2009,30(1):84-91.
[6] 罗澜,张路,方洪波,等.复合驱体系化学剂对原油活性组分界面扩张性质的影响[J].石油勘探与开发,2004,31(B11):21-25.
[7] 马丽,侯吉瑞,赵凤兰,等.碱对超低界面张力形成及界面膜扩张流变性的影响[J].大庆石油地质与开发,2010,29(6):149-154.
[8] 司友华,靳志强,丰杰,等.大庆原油含氮组分的界面扩张黏弹性质[J].石油学报:石油加工,2011,5:737-745.
[9] 曹绪龙,何秀娟,赵国庆,等.表面活性剂疏水链长对高温下泡沫稳定性的影响[J].高等学校化学学报,2007,28(11):2106-2111.
[10] 牛永玲.用滴体积法测定泡沫液表面张力的实验研究[J].煤矿安全,1996(12):13-15.
[11] 钱昱,张思富,吴军政,等.泡沫复合驱泡沫稳定性及影响因素研究[J].大庆石油地质与发,2001,20(2):33-36.
[12] 王海波,肖贤明.泡沫复合驱体系稳定性及稳泡机理研究[J].钻采工艺,2008,1(31):117-120.
[13] 吴文祥,姜海峰.多元泡沫分流作用及其驱油效果影响因素研究[J].油田化学,2002,19(2):173-177.
[14] 许关利,刘宏生,杨莉,等.超低界面张力泡沫驱油方案的优化[J].油气田地面工程,2011,30(2):49-51.