#TITLE_ALTERNATIVE#

• Main Author: VANIA HUTABARAT (NIM : 12209086), ANGGITA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/21099
• Institution: Institut Teknologi Bandung

Management of unproductive water has been a major challenge facing the hydrocarbon industry. It was estimated that about 210 million barrels of water are produced daily accompanied with 75 million barrels (11.9 million m3) of oil worldwide (Bailey et al, 2000). Excessive water production is a threat to the continued economic viability and can lead to premature abandonment of many oil fields, lower production rates, reduction in recoverable reserves and constitutes potential negative environmental impacts. Consequently, mechanical chemical shutoff and other water reduction techniques have been developed and deployed to curb the menace in the hydrocarbon industry. <br /> <br /> There are several mitigation methods that have been developed and applied in order to combat this problem. The three common mitigation methods include chemical treatment (polymer gels, organically crosslinked polymers, relative permeability modifier and inorganic gels), mechanical isolation (known as straddling between layers) and down hole water separation using smart water sink well completions. The most common method is the chemical treatment through the injection of polymer gels into high permeability streaks reducing its permeability and creating more uniform fluid flow within the reservoir (A. Joseph and J.A Ajienka, 2010). <br /> <br /> An example where chemical treatment was employed was in the Sago Field, Central Sumatera Basin in Indonesia. The field came with water production problems since the vertical channel is a dominant feature of the reservoir behavior. Post job polymer water shut off showed a reduction in water cut to 27% and increasing the oil production to 70% in one month (Gandawijaya, 1996). Therefore, chemical treatment is considerably the most common method of water cut reduction due to its long-term reliability and cost effectiveness, as well as its easy application.