SENSITIVITY ANALYSIS OF INJECTION FLUID TEMPERATURE, SOAKING TIME, AMOUNT OF CYCLIC, AND PRODUCING TIME TOWARD EFFICIENCY AND RECOVERY FACTOR ON CYCLIC STEAM STIMULATION

• Main Author: Firmansyah, Adi
• Format: Final Project
• Language: Indonesia
• Subjects: Pertambangan dan operasi berkaitan
• Online Access: https://digilib.itb.ac.id/gdl/view/54537
• Institution: Institut Teknologi Bandung

Heavy crude oil is one of the largest oil reserves in the world. It is estimated, 40% of world oil reserves comes from this type of oil. Heavy oil is one kind of oils which has low API density and high viscosity. The existence of high viscosity in heavy oil will cause oil difficult to flow for natural flowing. To overcome this problem, one kind of Enhanced Oil Recovery (EOR) methods called thermal recovery has been applied since 1931 in the USA and proved to be a successful method for solving this problem. Cyclic steam stimulation is one of thermal recovery methods that is mostly used and most successful method in the world applied in heavy oil reservoirs. The principle of this method is forming high-temperature steam zone in reservoir by injecting steam from the surface so that the viscosity of oil which is go through or present in this zone will decrease. The injection well is act as the production well in this method. This method consists of three periods, there are injection period, soaking period, and production period. Sensitivity studies are conducted to find out and understand more about the effects of injection fluid temperature, soaking time, amount of cyclic, and production time that are affect to successful of this method. The successful method of EOR depends on amount of oil that can be recovered and also the efficiency of this method (the comparison between amount of oil recovered and steam injected).