Use ability of Microorganisms in EOR

Microorganisms were considered to be harmful to the petroleum industry in the past. It is now known that they can also be posi t ive in terms of oil recovery. There are three ways in which microorganisms may donate to enhanced oi l recovery (EOR) : (a) microorganisms can produce biosurfactants and biopolymers on the surface; (b) microorganisms grow in reservoir rock pore throats to produce gases, surfactants, and other chemicals to recover trapped oi l in reservoirs; and (c) microorganisms can selectively plug high-permeabi lity channels in reservoir rock so that the sweep efficiency of the recovery process can be increased. In this paper progress in enhanced oi l recovery through the use of microorganisms,whether in si tu or on the surface, is reviewed, and field tests of the in si tu process are reported

کلیدواژه ها:

Microorganism ، EOR ، Biosurfactants ، Biopolymers