#TITLE_ALTERNATIVE#

• Main Author: BIMO MEDYANANTO (NIM : 12213022), AULIA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/21319
• Institution: Institut Teknologi Bandung

Abstract <br /> <br /> <br /> The use of petroleum as a requirement as a major energy source in the world will continue to increase along with the development of the times. The pursuit of petroleum needs in contrast to the depletion of oil reserves will be further enhanced in line with the advent of enhanced oil recovery technology in increasing oil production for long-established wells. One method of increasing oil recovery is to stimulate wells using microbes. Microbial huff and puff well stimulation is a method of enhanced oil recovery by utilizing the microbes present in the reservoir to increase production well productivity by producing chemical compounds that will react with the reservoir resulting the rock-fluid alteration properties of the reservoir and it will increase the production well performance to produce more oil using microbial huff and puff well stimulation. Several types of microbes have been tested and shows good results for their ability to increase oil recovery in laboratory studies. Stimulation of wells using microbes is the hope for increased oil recovery for production wells in mature or brown oilfield. <br /> <br /> <br /> Enhanced oil recovery methods using microbes consist of 2 common methods such as, microbial enhanced oil recovery (MEOR) and microbial huff and puff well stimulation. The difference lies in the number of wells used, in MEOR will need additional continuous injection well whereas for microbial well stimulation using the same injection and production wells and have the well cycles simultaneously. The microbial well stimulation has three stages of the well cycle which consist of, injection period, soaking time, and production time. In microbial huff and puff well stimulation, microbes or nutrient that injected into the reservoir will produce substances or chemical compounds such as bio-surfactants, gaseous emissions, acidic substances, and other types of compounds. Substances and compounds produced have particular roles in increasing production such as increase the oil sweep efficiency area, increasing the relative permeability of oils, decreasing oil viscosity and water-oil interfacial tension, selective against plug agent and partial degradation of crude oil. <br /> <br /> <br /> Using reservoir simulation for microbial huff and puff well stimulation, we can compare the cumulative value of oil production for base case and after microbial stimulation. We made a simple sensitivity studies cases between injection scenario and nutrient mole fraction by generates simple correlation model. The result from sensitivity studies by using simple correlation model implies that, the most parameter that effect in microbial huff and puff well stimulation for sequence is injection time, nutrient mole fraction, and soaking time. It can be stated within the simulation results by using 24 sensitivity study cases which has been done.