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Low-Energy Emulsification of Oil-in-Water Emulsions with Self-Regulating Mobility via a Nanoparticle Surfactant
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-09-22 , DOI: 10.1021/acs.iecr.0c03153 Rui Liu 1 , Yuanyuan Lu 1 , Wanfen Pu 1 , Kunlin Lian 2 , Lin Sun 1 , Daijun Du 1 , Yuyang Song 3 , James J. Sheng 4
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-09-22 , DOI: 10.1021/acs.iecr.0c03153 Rui Liu 1 , Yuanyuan Lu 1 , Wanfen Pu 1 , Kunlin Lian 2 , Lin Sun 1 , Daijun Du 1 , Yuyang Song 3 , James J. Sheng 4
Affiliation
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Oil-field chemists and engineers have searched a method for intelligent flooding of chemical-intervention-based processes with self-regulating mobility in subterranean areas for decades. By designing hydrophilic nanoparticles (amine-terminated nanosilica particles (ATNPs)) and nonionic surfactant laurel monoanolamide (LEMA) molecules with complementary hydrogen bonding functionalities that bind one another at the oil–water interface, we developed a route to in situ oil-in-water (O/W) emulsions without a phase inversion point. Apparent viscosities of the O/W emulsions demonstrated a negative relationship to oil saturation and a positive relationship to water saturation over a broad range of water saturations from 30 to 78%. These emulsions are produced by low-energy emulsification, simply accomplished by mild shaking for tens of seconds. The total concentration of the nanoparticle surfactant is 7000 mg/L, much lower than reported in the previous literature. We show that a local turbulent eddy of the immiscible fluids provides sufficient energy and time for the nanoparticle surfactant to create O/W emulsions since their morphology, droplet size distribution, rheology, and stability are similar to those produced by high-energy emulsification using a high-shear rotor stator mixer. Emulsification kinetics and physical model tests demonstrate the synergistic effect of ATNPs and LEMA on arresting Ostwald ripening, increasing capillary numbers, and self-controlling the displacement frontier of these emulsions. This system produced a high oil recovery efficiency of a three-layer heterogeneous square core with an incremental oil recovery factor of 33.7% original oil in place (OOIP) and an ultimate recovery factor of 72.1% OOIP when the water cut of the earlier water flooding exceeds 98%. This work paves a pathway to the production of smart in situ O/W emulsions using nanoparticle surfactants for industrial oil recovery applications.
中文翻译：
通过纳米表面活性剂的自调节迁移率的水包油型乳液的低能乳化
几十年来，油田化学家和工程师们一直在寻找一种方法，以智能方式驱替基于化学干预的过程，并具有自我调节的流动性。通过设计亲水性纳米粒子（胺端基纳米二氧化硅粒子（ATNPs））和具有互补氢键功能的非离子表面活性剂月桂树单醇酰胺（LEMA）分子，它们在油水界面相互结合，我们开发了一种原位油包油的方法没有反相点的水（O / W）乳液。在30％至78％的广泛水饱和度范围内，O / W乳液的表观粘度与油饱和度呈负相关，与水饱和度呈正相关。这些乳液是通过低能乳化生产的，只需轻轻摇动几十秒钟即可完成。纳米颗粒表面活性剂的总浓度为7000 mg / L，远低于先前文献中报道的水平。我们表明，不混溶流体的局部湍流涡流为纳米颗粒表面活性剂提供了足够的能量和时间来形成O / W乳液，因为它们的形态，液滴尺寸分布，流变学和稳定性类似于使用高能乳化法产生的那些。高剪切转子定子混合器。乳化动力学和物理模型试验证明，ATNP和LEMA在阻止奥斯特瓦尔德熟化，增加毛细管数和自控这些乳剂的位移前沿方面具有协同作用。该系统产生了三层异质方芯的高采油效率，增量采油系数为33。当早期注水的含水率超过98％时，原始原油（OOIP）为7％，最终采收率为72.1％OOIP。这项工作为使用纳米颗粒表面活性剂生产智能原位O / W乳液铺平了道路，用于工业采油应用。
更新日期：2020-10-15
中文翻译：
通过纳米表面活性剂的自调节迁移率的水包油型乳液的低能乳化
几十年来，油田化学家和工程师们一直在寻找一种方法，以智能方式驱替基于化学干预的过程，并具有自我调节的流动性。通过设计亲水性纳米粒子（胺端基纳米二氧化硅粒子（ATNPs））和具有互补氢键功能的非离子表面活性剂月桂树单醇酰胺（LEMA）分子，它们在油水界面相互结合，我们开发了一种原位油包油的方法没有反相点的水（O / W）乳液。在30％至78％的广泛水饱和度范围内，O / W乳液的表观粘度与油饱和度呈负相关，与水饱和度呈正相关。这些乳液是通过低能乳化生产的，只需轻轻摇动几十秒钟即可完成。纳米颗粒表面活性剂的总浓度为7000 mg / L，远低于先前文献中报道的水平。我们表明，不混溶流体的局部湍流涡流为纳米颗粒表面活性剂提供了足够的能量和时间来形成O / W乳液，因为它们的形态，液滴尺寸分布，流变学和稳定性类似于使用高能乳化法产生的那些。高剪切转子定子混合器。乳化动力学和物理模型试验证明，ATNP和LEMA在阻止奥斯特瓦尔德熟化，增加毛细管数和自控这些乳剂的位移前沿方面具有协同作用。该系统产生了三层异质方芯的高采油效率，增量采油系数为33。当早期注水的含水率超过98％时，原始原油（OOIP）为7％，最终采收率为72.1％OOIP。这项工作为使用纳米颗粒表面活性剂生产智能原位O / W乳液铺平了道路，用于工业采油应用。
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