纳米材料如何应用于润湿性变换.docx

原文；链接：JPT 2015年12月P74-75摘要：文章回顾了改变岩心润湿性的几类方法，概括性介绍了用于润湿性改变纳米材料的分类、作用方式、流体载体和存在的问题。A Study of Wettability-Alteration MethodsWithNanomaterials Application纳米材料如何应用于润湿性变换The use of nanomaterials for alteration of wettability is a method that has grown in prominence after the development of techniques for synthesizing nanosized particles in the late 1980s. In this paper, after a review of the fundamentals of wettability alteration, a discussion of nanomaterials used for wettability alteration is provided. Among these nanomaterials, nanoparticles of silica and polysilicone indicate better results in terms of efficiency on incremental oil recovery in waterflooding. 纳米尺度的粒子合成技术在1980年代末发展后，使用纳米材料改变润湿性的方法也已取得突出进展。本文在介绍润湿性改变的基本原理之后，讨论纳米材料是如何用于润湿性改变的。众多纳米材料之中，纳米二氧化硅和有机硅聚合物在帮助提高水驱采收率上有着更好的作用效果。Introduction介绍Wettability is the tendency of a fluid to spread over a specific surface and is relative to other existent fluids in that system and is defined by the contact angle of a droplet of the fluid and the surface. It is a result of adhesion forces between the fluid and the minerals of the rock. The wettability of a rock ranges from strongly water-wet to strongly oil-wet and is a result of brine/oil/rock interactions in a reservoir. There are different types of rocks on the basis of these interactions and wettabilities: 润湿性是一种流体相对于其他存在的流体系统分布在特定表面一个趋势。可由液体的液滴与表面的接触角作为定义。这是流体和岩石矿物之间的粘附力作用的结果。岩石的润湿性范围从强烈亲水到强烈亲油，并且是由于盐水/石油/储层岩石相互作用而成的。在这些交互作用和润湿性基础上，有多种不同类型的岩石。1. If no, or equal, tendency is shown from oil or brine to spread over the surface of the rock, the system is said to have neutral wettability or intermediate wettability. 1．如果从石油或盐水在岩石表面传播趋势没有或者显示相同的情况下，这个系统可称为中等润湿或中间润湿性。2. Because different mineralogies coexist in an oil reservoir, different wettabilities are also expected. If this variety in the reservoir is not negligible, then, in different parts of the reservoir, different chemical interactions between fluids and rocks are observed and, consequently, some areas of the