Wettability alteration with new composition of smart water: effect of silicate ion instead of sulfate ion

سال انتشار: 1395
محل انتشار: سومین کنفرانس بین المللی نفت،گاز،پالایش وپتروشیمی بارویکردتوسعه ارتباط دولت،دانشگاه وصنعت
کد COI اختصاصی: OGPD03_042
زبان مقاله: انگلیسی
تعداد مشاهده: 972

نویسندگان

Faculty of Chemical Engineering, Tarbiat Modares University, P.O. Box: ۱۵۱۱۱-۵۴۸۴ , Tehran, Iran

Institute of Petroleum Engineering, School of Chemical Engineering, College of Engineering, University of Tehran, Karegar

چکیده

A new EOR method for chalk reservoirs and possibly applicable to all carbonate reservoirs is the wettability alteration with modified sea water as Smart Water. Over million of years, the chemical equilibrium of crude oil-brine-rock is established that includes all sectors of the oil reservoir. If the injected water into the oil reservoir differ with formation water in terms of composition and salinity it can disturb the established chemical equilibrium of crude oil-brine-rock system. During the process of establishing a new chemical equilibrium, wettability properties is also changed and may increase oil recovery. Smart Water injection has been proposed as a reason of wettability alteration. Sulfate ions in sea water is known as one of the most main reasons of the wettability alteration in carbonate rocks. In this study, we tried to introduce a new multivalent anion instead of sulfate and the performance of these two ions are investigated. Only the silicate ion and without presence of the potential determining ions able to change wettability significantly. But it deposited in presence of calcium and magnesium ions dramatically and this is an unpromising event but the scaling of silicate ions disappear with addition of hydrochloric acid (HCl). There is a question about the performance of this new solution. Can this solution change the wettability toward water wet or not? Contact angle measurements have shown that this solution has more ability in wettability alteration of carbonate rocks than modified sea water.

کلیدواژه ها

smart water, wettability, silicate, sulfate, carbonate rock

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.