سال انتشار: ۱۳۸۷

محل انتشار: اولین کنگره ملی مخازن شکافدار و چالش های پیش رو، با نگاه ویژه به مخازن بزرگ کشور

تعداد صفحات: ۷

نویسنده(ها):

Dr. Khalil Shahbazi – dean of petroleum engineering faculty of Ahvaz, Petroleum University of Technology
Arman sepahvand – M.s Student of Petroleum University of Technology

چکیده:

The entrapment of Aqueous phase within porous media Can occur in a number of different
situations during drilling, completion, work over and production operations. Removing the entrapped
aqueous phase (water block) can increase the impaired hydrocarbon relative permeability. In this
study, the efficiency of using alcohols in removing water block for increasing hydrocarbon relative
permeability and improving oil recovery is examined and the results of laboratory tests are presented.
The experimental setup consisted of a stainless steel core holder for cylindrical cores, a displacement
pump and a pressure transducer. Outcrop sandstone plug was used in this experiment and we used
methanol, ethanol and isopropanol as water block removing agents. The results obtained showed that
using methanol and specially ethanol can effectively remove water block and increase oil relative
permeability but in the case of isopropanol, not only the oil relative permeability did not increased but
it caused a reduction in it.