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CTAB诱导膨润土乳液转相机理及其在可逆乳化油基钻井液中的应用 被引量:7
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作者 霍锦华 张瑞 杨磊 《石油学报》 EI CAS CSCD 北大核心 2018年第1期122-128,共7页
针对目前油基钻井液对油井完井损害问题,结合Pickering乳液高稳定性的特点,通过改变表面活性剂CTAB的浓度,采用原位活化工艺制备了具有不同表面润湿性的膨润土固体颗粒,研究了CTAB诱导膨润土乳液转相机理。Zeta电位及接触角的变化表征... 针对目前油基钻井液对油井完井损害问题,结合Pickering乳液高稳定性的特点,通过改变表面活性剂CTAB的浓度,采用原位活化工艺制备了具有不同表面润湿性的膨润土固体颗粒,研究了CTAB诱导膨润土乳液转相机理。Zeta电位及接触角的变化表征膨润土颗粒亲水、亲油性及表面润湿性的变化;膨润土乳液体系电导率及微观形貌的变化表征乳液转相行为。实验结果表明,通过改变CTAB浓度可实现对膨润土颗粒表面润湿性的改变,进而诱导膨润土乳液发生两次相转变行为。应用性能研究表明,该可逆乳化油基钻井液体系热稳定性良好,滤失量小,解决了传统油基钻井液对油井完井的损害问题。 展开更多
关键词 表面活性剂 膨润土颗粒 乳液转相 可逆化油基钻井 胶结强度
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Phase Behavior and Structural Transitions in Sodium Dodecyl Sulfonate Microemulsions 被引量:1
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作者 杨根生 施介华 +2 位作者 李景华 王普 姚善泾 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2002年第6期670-672,共3页
The forming mechanism of microemulsion of sodium dodecyl sulfonate, alcohols,water and isooctane was studied, with particular emphasis on the effect of molecular weight andconcentration of alcohols. Phase diagram of t... The forming mechanism of microemulsion of sodium dodecyl sulfonate, alcohols,water and isooctane was studied, with particular emphasis on the effect of molecular weight andconcentration of alcohols. Phase diagram of the four components, alcohol, sodium dodecyl sulfonate,water and isooctane, was used as a means of study, through which the microemulsion regions weredetermined. Phase diagram of sodium dodecyl sulfonate/n-pentanol/isooctane/water system at κ_m = 2(κ_m = W_(n-pentanol)/W_(SDS)) is presented. The variation of conductivities of differentmicroemulsion samples with water was measured. From the conductivities we investigated a change instructure from water droplets in oil (W/O) at low water content to liquid crystal at intermediatewater content and a stricture of oil droplets in water (O/W) at high water content. 展开更多
关键词 sodium dodecyl sulfonate ALCOHOL MICROEMULSION phase behavior CONDUCTIVITY
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