Effect of a synthesized anionic fluorinated surfactant on wettability alteration for chemical treatment of near-wellbore zone in carbonate gas condensate reservoirs

作     者：Iman Nowrouzi Amir H.Mohammadi Abbas Khaksar Manshad Iman Nowrouzi;Amir H. Mohammadi;Abbas-Khaksar Manshad

作者机构：Discipline of Chemical EngineeringSchool of EngineeringUniversity of KwaZulu-NatalHoward College CampusKing George V AvenueDurban 4041South Africa Department of Petroleum EngineeringAbadan Faculty of Petroleum EngineeringPetroleum University of Technology(PUT)AbadanIran Department of Petroleum EngineeringFaculty of EngineeringSoran UniversitySoranKurdistan RegionIraq 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2020年第17卷第6期

页      面：1655-1668页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

主　　题：Condensate blockage Chemical treatment Wettability alteration Gas-wetting Fluorinated surfactant Surface tension 

摘      要：The pressure drop during production in the near-wellbore zone of gas condensate reservoirs causes condensate formation in this *** blockage in this area causes an additional pressure drop that weakens the effective parameters of production,such as *** rock wettability alteration to gas-wet through chemical treatment is one of the solutions to produce these condensates and eliminate condensate blockage in the *** this study,an anionic fluorinated surfactant was synthesized and used for chemical treatment and carbonate rock wettability *** synthesized surfactant was characterized by Fourier transform infrared spectroscopy and thermogravimetric ***,using surface tension tests,its critical micelle concentration(CMC)was *** angle experiments on chemically treated sections with surfactant solutions and spontaneous imbibition were performed to investigate the wettability *** adsorption on porous media was calculated using ***,the surfactant foamability was investigated using a Ross-Miles foam *** to the results,the synthesized surfactant has suitable thermal stability for use in gas condensate reservoirs.A CMC of 3500 ppm was obtained for the surfactant based on the surface tension *** angle experiments show the ability of the surfactant to chemical treatment and wettability alteration of carbonate rocks to gas-wet so that at the constant concentration of CMC and at 373 K,the contact angles at treatment times of 30,60,120 and 240 min were obtained 87.94°,93.50°,99.79°and 106.03°,***,this ability varies at different surfactant concentrations and *** foamability test also shows the suitable stability of the foam generated by the surfactant,and a foam half-life time of 13 min was obtained for the surfactant at CMC.