#TITLE_ALTERNATIVE#

• Main Author: WAHYU PRADIPTA (NIM : 12212075), DIDIT
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/26646
• Institution: Institut Teknologi Bandung

Recovery of oil from a reservoir with water drive depends on the efficiency of oil displacement by water. The existence of bottom aquifer helped push the oil when produced and also to maintain the reservoir pressure during the production process so there is no significant decline. In fact, it is not uncommon process of oil displacement by water that is efficient and stable. Often it happens breakthrough incoming water from the water zone to the oil zone and invade through perforation of producing wells due to unfavorable production strategies. This phenomenon is commonly called water coning which is marked by the breakthrough of water in the aquifer into the perforation zone around the wellbore and resulting decline in oil production. The impact of the water coning is the form of increased water production that requires special handling at the surface, in addition to the rate of oil production is also drastically reduced after water oil contact form cone below the zone of perforation due to declining relative permeability of oil around the well and require pressure more likely to carry water and oil to the surface. <br /> <br /> In this study, we will use one of the methods of production to prevent water coning with the implementation schedule of Downhole Water Sink (DWS) and re-injection of water which is produced for pressure maintenance. There are two major strategies in analyzing and determining the best production strategy in this study, those are the production of oil in constant production rate (plateau) and production with peak production. <br /> <br /> This study conducted a simulation to determine the sensitivity and the best production strategy for producing oil field with water propulsion drive with bottom aquifer. Sensitivity made to schedule the application of DWS, the amount of withdrawal or rate of the top and bottom perforation at DWS, as well as the implementation schedule and the number of injection wells required. The best scenario was based on engineering analysis in the form of the highest recovery factor can be generated by each production strategy. The results of this study indicate that the implementation schedule of DWS can overcome the problems of water production and water coning, and can increase oil recovery significantly with various combinations of scenarios. DWS flexibility in determining production strategy has also become one of the DWS advantages compared with conventional production wells. The main purpose of injection wells in this study is a process of disposal or disposal thus reducing the environmental pollution caused by the production of water.