Tsany, Ikhsan Jauhari
(2021)
Studi Laboratorium Screening Microba Kompos Untuk Microbial Enhanced Oil Recovery (MEOR).
Other thesis, Universitas Islam Riau.
Abstract
Increasing oil recovery using the enhanced oil recovery (EOR) method is a method used in the petroleum world, where when the primary recovery and secondary recovery stages are no longer able to produce oil in the reservoir economically, EOR will be used to increase oil recovery in a field. This study will discuss the EOR method using bacterial microorganisms known as microbial EOR, which aims to mobilize the residual oil saturation in the reservoir. This research was conducted to determine the bacterial microorganism Bacillus cereus and Bacillus stearothermophilus FNCC from cow dung compost which is capable of producing metabolism in the form of gases such as methane and butane, capable of being candidates for bacterial microorganisms in the microbial EOR method, where the bacteria Bacillus cereus has an acidity or pH value of 6 and bacteria bacillus stearothermophilus has a pH value of 6.3, and both bacteria are able to grow at a temperature of 40℃, and 50℃ this temperature enters the thermophilic bacteria. Bacteria were also able to grow in formation water media and crude oil, Bacillus cereus in formation water media grew as much as 16x〖10〗^7 CFU/ml, and in crude oil media as much as 2x〖10〗^1 CFU/ml. Bacillus stearothermophilus in formation water media grows as much as 20x〖10〗^6 CFU/ml, and in crude oil media as much as 12x〖10〗^5 CFU/ml, and when mixed (mixing) the two bacteria in formation water media as much as 24x〖10 ^7 CFU/ml, and on crude oil media as much as 16x〖10 crude^7 CFU/ml, and gram staining was performed, the violet color was obtained which indicated gram-positive, in which the two bacteria tested were gram-positive bacteria. Thus, bacillus cereus and bacillus stearothermophilus FNCC are candidates for microorganisms that can be used in the microbial EOR method.
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