#TITLE_ALTERNATIVE#

• Main Author: Wahyu Pangestu - NIM: 12213006 , Rizki
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/24071
• Institution: Institut Teknologi Bandung

Heavy oil represents a large portion of the worlds unproduced discovered hydrocarbon resources. High density and viscosity at atmospheric conditions has difficult and costly to develop and produce so has resulted in very low recovery factors. For this reason, heavy crudes are an abundant untapped potential energy source, which is expected to be a large contributor to the world’s energy needs in the future. However, the technological costs per barrel are currently much higher than for conventional resources. NR field oil is heavy oil and reservoir is oil wet. This raises the problem of hard oil production by ordinary waterflooding. Oil wet shows oil difficult to be pushed by water. Therefore one of the proper EOR studies is using a chemical surfactant. Surfactant can reduce surface tension so that it can change wettability from oil wet to water wet or oil-water wet. The study was conducted by varying the composition ratio of surfactant and co-surfactant and its concentration, then each of the surfactants was tested by spontaneous imbibition method. The parameters used as reference in the determination of the best surfactant are maximum oil recovery value, contact angle and IFT. Spontaneous imbibition testing was performed using artificial core sandstone with a porosity of about 26%, heavy oil sample with API gravity of 20,088 °API and viscosity of 176,625 cp at room temperature. The type of surfactant tested was nonionic, generally obtained the result that nonionic surfactant NR03-3% yields the highest oil recovery. <br /> <br />