An Investigation of Various Salts and pH's Effect on Fine Migration in Sandstone Reservoirs
- سال انتشار: 1399
- محل انتشار: سومین کنفرانس دوسالانه نفت، گاز و پتروشیمی خلیج فارس
- کد COI اختصاصی: OGPC03_035
- زبان مقاله: انگلیسی
- تعداد مشاهده: 309
نویسندگان
Department of Petroleum Engineering, Kish International Campus, University of Tehran, Kish,Iran
Institute of Petroleum Engineering, Faculty of Chemical Engineering, College of Engineering,University of Tehran, Tehran, Iran
Institute of Petroleum Engineering, Faculty of Chemical Engineering, College of Engineering,University of Tehran, Tehran, Iran
Department of Petroleum Engineering, Kish International Campus, University of Tehran, Kish,Iran. Institute of Petroleum Engineering, Faculty of Chemical Engineering, College of Engineering,University of Tehran, Tehran, Iran
چکیده
low salinity water (LSW) injection and alkaline flooding are two common enhanced oil recovery (EOR) methods. These methods although has a lot of advantages, could cause some formation damages. One of the main problems during LSW and alkaline flooding is Fine migration. Fine migration might reduce reservoir permeability or produce and damage well facilities. Ionic strength and pH are two main factors that could control fine migration in these EOR methods. In this paper, the effect of four salts NaCl, KCl, CaCl۲, and MgCl۲ was studied as an ion strength parameter on fine migration. Also, four pH as ۶.۵, ۸, ۱۰, and ۱۲ 's effect on fine migration was investigated. The results showed that the presence of salts decreases the amount of fine migration in comparison with distilled water injection and also divalent salts have a better performance than monovalent salts. Furthermore, Studies on pH's effect indicate that the more injection fluid's pH, the more fine migration. Zeta potential measurements prove that the potential of fine particles' surfaces increases by raising fluid pH. As a result, at the higher pH, the repulsive forces between fine particles is greater and more fine migrate.کلیدواژه ها
Fine migration;Formation Damage; Low Salinity Water; pH;Zeta Potential; EOR;مقالات مرتبط جدید
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