title: Microbes and oil recovery.
abstract: Conventional oilfield operations recover, on average, about a third of the crude oil originally present in a reservoir. Improving the yield depends both on overcoming macro- and micro-geological problems and on progressively compensating for the pressure drop in the reservoir as it is depleted of oil. In some cases this may be achieved by treating the oil-bearing matrix with certain chemicals, most commonly surfactants and viscous or insoluble polymers. One effective way of introducing the chemicals is by employing a population of bacteria in the reservoir as synthetic agents. Some of these processes are shown in the Centrespread illustration.
authors.affiliation: School of Biological Sciences, Queen Mary College (University of London), UK.
authors.forename: V
authors.initials: V
authors.lastname: Moses
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D001709:Biotechnology; D005648:Fuel Oils; D010539:Permeability; D011108:Polymers / Q000378:metabolism; D013501:Surface-Active Agents / Q000378:metabolism; D014783:Viscosity
chemical_list: D005648:Fuel Oils; D011108:Polymers; D013501:Surface-Active Agents