Abstract

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The petroleum industry is backbone of any countries economy. The oil exploration and consumption is many time deciding factor for growth. Various aspects such as catalyst cracking, sludge handling, gas recovery are widely investigated and studied. Efficient oil exploration is very important in petroleum and refining industry. The increased cost and depleting resources call for enhanced oil recovery. Enhanced oil recovery (EOR) methods are used after secondary or primary recovery methods. Gases or liquids are injected to mobilize the residual amount of oil. Microbial enhanced oil recovery (MEOR) is well proven technology for enhanced oil recovery. These enhanced oil recovery methods are classified as thermal methods, chemical methods, miscible/immiscible gas injection methods and other methods