Screening of microemulsion properties for application in enhanced oil recovery
Screening of microemulsion properties for application in enhanced oil recovery
复制标题
提高采收率应用的微乳液特性筛选
DOI：
10.1016/j.fuel.2013.12.051
复制
发表时间：
2014
期刊：
影响因子：
7.4
通讯作者：
A. Mandal
中科院分区：
文献类型：
--
作者：
A. Bera;T. Kumar;K. Ojha;A. Mandal
微乳液由于其对天然油藏剩余油的高采收率，成为提高采收率的有效手段。采用水增溶法研究了矿化度对阴离子微乳液相行为的影响。测定了原油与盐水、表面活性剂溶液和微乳液之间的界面张力，发现微乳液具有很强的降低界面张力的能力。建立了最佳矿化度下的拟三元相图，并根据相图确定了单相微乳液的组成。激光光散射用于监测在不同盐度的几种微乳制剂的粒径。用制备的微乳液进行了一系列驱油实验。通过物料平衡计算额外回收率。已观察到令人鼓舞的结果，在常规水驱基础上额外采收率超过原始石油的25%。研究了不同盐度下表面活性剂在砂粒（吸附剂）上的吸附特性。
Microemulsion in enhanced oil recovery is an efficient tool because of its high level of extraction efficiency of residual oil from natural oil reservoir. In the present paper the effect of salinity on anionic microemulsion phase behavior has been investigated by water solubilization method. Interfacial tensions between crude oil and brine, surfactant solution and microemulsion have been measured and it was found that the microemulsion has high ability to reduce interfacial tension. Pseudoternary phase diagram has been established at optimum salinity and composition of single-phase microemulsion has been determined from the curve. Laser light scattering was used to monitor particle size of several microemulsion formulations at different salinities. A series of flooding experiments have been performed using the prepared microemulsions. The additional recoveries were calculated by material balance. Encouraging results with additional recovery more than 25% of original oil in place above the conventional water flooding have been observed. Adsorption characteristics of the surfactant on the sand particles (adsorbent) at different salinities have also been studied.