Sulfate-reducing bacteria (SRB) are a group of microbes that use sulfate (SO4 ) as a final electron acceptor instead of oxygen for respiration (Al-Zuhair, El-Naas et al. 2008). SRB are able to use a very wide spectrum of different low molecular organic compounds (e.g. lactate, acetate, proprionate, succinate, pyruvate, ethanol, sugars, etc.) for growth, with SO4 being reduced to hydrogen sulfid...

The BZ 34-1 oilfield is a typical gas cap edge water reservoir in the Bohai oilfield. main characteristics of were multi-phase sand body stacking and was composed three parts: cap, oil reservoir, water. actual production site results show that permeability difference multi-layer bodies has serious impact on development effect. This article establishes model numerical based total recovery degree...

Uncontrolled disposal of oilfield produced water in the surrounding environment could lead to soil contamination by naturally occurring radioactive materials (NORM). Large volumes become highly contaminated with radium isotopes (226Ra and 228Ra). The concentration radionuclides 226Ra, 232Th 40K were determined using gamma ray spectrometry order assess radiological health hazards excess lifetime...

Microbiologically influenced corrosion (MIC) caused by sulfate-reducing bacteria (SRB) has been investigated in an oilfield injection water system. Strain CW-01 was isolated from an oilfield and strain CW-04 was isolated from biofilm dirt of pipeline walls. The strains were facultative anaerobes, non-motile, Gram-positive, pole flagellum, and spore-forming curved rods. The growth was observed o...

Abstract This paper provides an introduction to the topic of water shutoff and conformance improvement. After indicating volumes produced during oilfield operations, a strategy is provided for attacking excess production problems. Problem types are categorized, typical methods problem diagnosis mentioned, range solutions introduced each type. In third section paper, concept disproportionate per...

In view of the deterioration oil well liquid supply capacity and increase effect after multiple rounds carbon dioxide (CO2) huff puff, according to actual conditions Ng12 reservoir in XA oilfield, an indoor physical simulation experimental model was established. The parameters were determined, five CO2 puff experiments carried out, crude produced water flooding stage different collected. effect...

Due to the presence of environmental problems, it is urgent improve processes aimed at processing and purification hydrocarbon-containing wastes wastewaters. The review presents latest achievements in development nanostructured catalysts made from different materials that can be used purify oil-polluted wastewaters (petroleum refinery wastewater, oilfield-produced water, sulfur-containing extra...

Oilfield chemicals are utilized in treating reservoir formations, wellbore completions, drilling, and to enhance productivity, which exerts pressure on the formation. Pressure from these processes cause formation rock weaken, weakened begins detach, thereby producing sand as well fluid (petroleum). In petroleum industry, sanding poses major challenges with significant financial consequences. Th...