The pressure drop around the well in the production from a gas condensate reservoir causes the formation of condensate in the area before it reaches the well and surface space. This condensate and occasionally water in the porous medium can block the well and create an additional pressure drop. Studies show that the chemical treatment of this area eliminates the problem by altering the reservoir rock wettability toward a moderate and strong gasphilicity. For this purpose, fluoropolymers-, fluorosurfactants-, and fluorochemicals-coated nanoparticles can be used. In this work, we have studied two types of fluoride gas namely R134A and R404A, which are widely used in refrigeration industry as refrigerant gases, perfumery, and industrial detergents. The basis of this study was the aging of rock samples in thin sections and plugs in these two gases at different pressures above the critical pressures of them at 70 °C at different times and then conducting the contact angle experiments by placing the drop of water and condensate on the cross sections and then performing imbibition tests using plugs. The results show that in addition to the efficiency of both gases in wettability alteration to gasphilic, the gasphilic intensity obtained at constant temperature depends on the pressure and the aging time of the samples.

气体冷凝水储层在生产井周围的压降导致凝结水在到达井和地面空间之前在该区域中形成。冷凝水，有时多孔介质中的水会阻塞井，并造成额外的压降。研究表明，该区域的化学处理通过将储层岩石的润湿性改变为中等而强烈的亲油性而消除了该问题。为此，可以使用含氟聚合物，含氟表面活性剂和含氟化合物涂层的纳米颗粒。在这项工作中，我们研究了两种类型的氟化物气体，即R134A和R404A，它们在制冷行业广泛用作制冷剂气体，香料和工业洗涤剂。这项研究的基础是岩石样品在较薄的部分中的老化，并在高于70℃的临界压力的不同压力下，在不同的时间在两种压力下塞入这两种气体，然后通过放置水滴和水进行接触角实验。在横截面上冷凝，然后使用塞子进行吸水测试。结果表明，除了两种气体在改变亲油性的润湿性方面的效率外，在恒定温度下获得的亲油强度还取决于样品的压力和老化时间。