Fossil fuels such as petroleum resources continue to be a significant fraction of the energy
portfolio. Oil sludge or slops have become an unavoidable waste in the petroleum …

Microbial enhanced oil recovery (MEOR), characterized with the virtues of low cost and
environmental protection, reflects the prevalent belief in environmental protection, and is …

With the population increasing and industrialization developing, the high demand for clean
water has become a major issue that should be meet. In particular, leak of oils and organic …

Qatar is one of the biggest oil and gas producers in the world, coupled with it is challenging
environmental conditions (high average temperature:> 40° C, low annual rainfall: 46.71 mm …

Crude oil is a major energy source that is exploited globally to achieve economic growth. To
meet the growing demands for oil, in an environment of stringent environmental regulations …

Microbial activity is ubiquitous and important in petroleum reservoir systems; however,
current knowledge regarding the diversity and functions of microbial communities that are …

Simple Summary A significant amount of residual oil is located in oil reservoirs with high-
salinity formation water levels. Microorganisms are capable of producing a number of oil …

Nitrates do not occur in the formation water of oil reservoirs. A number of oil companies use
nitrate injection technology to suppress corrosion of steel equipment and to decrease the …

Highlights•Microbial co-occurrence pattern in water flooded were more complex than in EOR
flooded oil reservoirs.•Archaeal maintained more robust structure compared with bacteria …

After polymer flooding, substantial oil and residual polymers remain in reservoirs, leading to
plugging and reduced recovery. MEOR (Microbial Enhanced Oil Recovery) aims to release …