STUDI LABORATORIUM TENTANG PENGARUH INJEKSI MIKROBA TERHADAP SIFAT FISIK BATUAN DAN FLUIDA RESERVOIR

• Main Author: Budiharjo Sulistyarso , Harry
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/8037
• Institution: Institut Teknologi Bandung

Microbial injection is one of the new EOR methods, even though we knew from the beginning that microorganism could be grow and alive in oil reservoir. At the moment, this method has been the subject of number because it has auspicious future in EOR. Microbial injection in based on the ability of microbes to give bioproduct such as gas, surfactant, polymer which hopely can release oil in the reservoir. By injecting bacterialinnokulum into reservoir and after a certain periods, the residual oil could be released. The purpose of this research is to see the effect of microbial injection in petrophysic properties (porosity, permeability, wettability) and fluid properties (interfacial tension, viscosity, density, oil swelling). The sample in form of core plug, crude oil, water formation are taken from HB and ER Field, in Central of Sumatera. The result of observation indicate porosity values increase between 2 to 4 %, permeability values increase between 3 to 22 % and goes trend wettability changing from oil wet to water wet. In fluid properties indicate interfacial tension value decrease between 0.98 to 15.29 %, viscosity values decrease between 4.82 to 27.10 %, specific gravity values decrease between 2.91 to 8.00 % and swelling factor values between 1.01 to 1.04.