Maulana, Anggya
(2019)
Analisis Sensitivitas Parameter Dan Pengaruh Kekuatan Aquifer Terhadap Performa Penerapan Sumur Downhole Water Loop Untuk Mengatasi Masalah Water Coning.
Other thesis, Universitas Islam Riau.
Abstract
Downhole water loop (DWL) technology is a proposed method for controlling water coning and reducing the volume of formation water produced by oil wells from reservoirs with bottom water drive driving force. The DWL well method uses three perforations, where the first perforation is in the oil zone (top completion) while the other two perforations are in the water zone (bottom completion). The main concept is to provide a counter drawdown in the water zone by draining water in the second perforation and then the water is immediately injected into the third perforation below, so that a relatively stable water oil contact (WOC) condition will be formed. DWL well technology is proposed to overcome the problems that occur in downhole water sink (DWS) wells. The concept of the DWS well is the same as DWL, but in this DWS well it only uses two perforations, so the water drained on the second perforation of the DWS well is directly produced to the surface. Therefore, due to the production of water, DWS wells produce large volumes of water to the surface, causing high surface lifting and water treatment costs. This study uses a computer simulation (CMG) to model reservoir performance in field X. The parameter to consider is the combination of oil flow rate (Qtop) and water flow rate (Qbottom), as well as the effective distance of production-injection perforation (D/I). The results showed that the use of oil flow rate (Qtop) of 1,000 bpd, 1,500 bpd, and 2,000 bpd gave an increase in oil acquisition of 41,716 bbl to 69,901 bbl in the optimal water drainage (Qbottom) of 4,350 bpd, 5,200 bpd, and 5,750 bpd with the optimum D/I distance of 0.27 ft. The greater the strength of the aquifer (kv / kh) at 20/100 mD, 50/400 mD, and 80/700 mD will result in a decrease in oil recovery in the DWL well by 1,077,603 bbl to 1,458,928 bbl in field X.
Actions (login required)
 |
View Item |
