Petroleum Reservoirs, Influence, Activity and Growth of Subsurface Microflora in

Abstract

Origins of Hydrocarbon Reservoirs Oil‐Bearing Rock Formations as Microbial Habitats Microbiology of Oil‐Bearing Rocks Microbial Consequences of Oil Reservoir Exploitation Application of Microbial Technology for Exploitation of Petroleum Reservoirs

Effect of inorganic nutrients on bacterial community composition in oil-bearing sandstones from the subsurface strata of an onshore oil reservoir and its potential use in Microbial Enhanced Oil Recovery

“…Besides, Pseudomonas is known as a hydrocarbon-degrading bacterium, and it is effective in stabilising oil-in-water emulsion that can improve the ability of oil recovery [47]. In addition, Pseudomonas was applied, together with other microbes, to enhance oil recovery rate in the Bragadiru oil field, which caused the increase in oil production from 1.5 to 7.4 bbl/d per well [48]. The existence of Pseudomonas in onshore reservoirs had also been observed in other studies [31, 42].…”

Bio‐enhanced oil recovery (BEOR) methods: All‐important review of the occasions and challenges

“…These microorganisms are increasingly recognized for their ability to influence reservoir dynamics and fluid flow. [57] To develop new and efficient technologies in this field, three important principles are considered. First, oil fields undergoing flooding methods rely on the biochemical…”

“…In alternate methodologies, biosurfactants are generated in situ, yielding heightened displacement of residual oil and a consequential reduction in oil viscosity. [14,16,54,55,[57][58][59][60][61][62][63][64][65] In the MEOR method, microbial metabolism is facilitated by providing suitable conditions through the injection of nutrients. Some of these procedures involve introducing a degradable carbohydrate, such as sugar syrup, into the reservoir.…”

“…In the oil industry, microbial products should create very favourable variations in the physicochemical characteristics of oil and result a noticeable enhancement in the petrophysical properties of the reservoir rock. [16,17,55,[57][58][59][60][66][67][68][69][70][71][72][73] The prosperity within in-situ MEOR runnings is dependent to the development of a consortium of microorganisms (swelling microbes) that can survive in hydrocarbon and brine-containing reservoirs and generate the favourable metabolic goods. [55,68,72] Figure 6 shows a part of the MEOR process and operation.…”

“…[98] EOR through surfactant utilization stands out as an advanced approach aimed at recuperating a substantial portion of residual oil. [50,51,55,[57][58][59][60]68,69] Within this procedure, a water-soluble surfactant is introduced into the oil reservoir. Upon interaction with the entrapped oil within the reservoir rock's pores, this solution diminishes the IFT, consequently prompting the mobilization of the trapped oil.…”