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Bacterial degradation

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Proceedings Papers

Paper presented at the CORROSION 99, April 25–30, 1999
Paper Number: NACE-99167
... polyamide coated aircraft material conditioning environment consortium Subsurface Corrosion H2S management inoculation mechanism biocide inhibitor primer coating aluminum alloy metals & mining oilfield chemistry well integrity chromate inhibitor bacterial degradation coating degradation...
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<span class="search-highlight">Bacterial</span> hydrocarbon <span class="search-highlight">degradation</span> potential for the rhizosphere isolates (g...
Published: 11 August 2020
Figure 2 Bacterial hydrocarbon degradation potential for the rhizosphere isolates (growth dynamics in colony-forming unit (cfu/ml)). Legend: A3 = Pseudomonas fluorescens; A4 = Achromobacter agilis; D2 = Bacillus thuringiensis; L1 = Staphylococcus lentus; D22 = Bacillus coagulans; A2 = B... More
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<span class="search-highlight">Bacterial</span> Isolates hydrocarbon <span class="search-highlight">degradation</span> total protein and catechol-2,3-d...
Published: 11 August 2020
Figure 3 Bacterial Isolates hydrocarbon degradation total protein and catechol-2,3-dioxygenases (C23O) activity monitoring More
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<span class="search-highlight">Degradation</span> of TPH by the culturable <span class="search-highlight">bacterial</span> strains isolated from crude ...
Published: 30 October 2007
Figure 1 Degradation of TPH by the culturable bacterial strains isolated from crude oily sludge and oil contaminated soil of Gujarat Refinery, India. More
Proceedings Papers

Paper presented at the SPE/DOE Enhanced Oil Recovery Symposium, April 22–25, 1990
Paper Number: SPE-20219-MS
... process modifications developed since a previous test was conducted in 1980. These changes included using a 25% smaller microemulsion bank size and addition of formaldehyde to injected fluids to inhibit bacterial degradation of biopolymer. The pilot was performed in a single, 0.71-acre [2873 m), 5-spot...
Proceedings Papers

Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16700
... of treatment chemical, bacterial degradation of treatment chemical, excessive ingress of oxygen, and poor water quality. The work presented was initiated to investigate a nitrite / molybdate corrosion inhibitor due to ongoing integrity concerns in the closed loop system. There is not clear published guidance...
Proceedings Papers

Paper presented at the Middle East Oil Technical Conference and Exhibition, March 14–17, 1983
Paper Number: SPE-11505-MS
... in the polyner drive bank and premature breakthrough of lower-salinity drive water premature breakthrough of lower-salinity drive water were observed part-way through the test. Laboratory and field studies conducted since flood termination have confirmed that loss was caused by bacterial degradation...
Proceedings Papers

Paper presented at the SPE Liquids-Rich Basins Conference - North America, September 5–6, 2018
Paper Number: SPE-191778-MS
... pathway. The calcifying bacterial cultures produce urease or carbonic anhydrase enzyme which is capable of precipitating calcium in the surrounding micro environment as CaCO 3 . The bacterial degradation of urea locally increases the pH and stimulates the microbial deposition of carbonate. The calcium...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the ADIPEC, October 31–November 3, 2022
Paper Number: SPE-210953-MS
... are inefficient and contribute to heavy metals leaching. Considering those disadvantages, creating a greener and more cost-effective approach to securely disposing of these hazardous materials is vital. The bacterial degradation of any substrate without oxygen is known as anaerobic digestion (AD). It is one...
Proceedings Papers

Paper presented at the 12th World Petroleum Congress, April 26–May 1, 1987
Paper Number: WPC-22104
... degradation. The latter is favoured under lacustrine conditions where the terrestrial source material may be supplemented by algal and bacterial biomass. High wax oils are formed in such environments. These differences lead to a hydrocarbon generation model based on the depositional conditions of the source...
Proceedings Papers

Paper presented at the CORROSION 2010, March 14–18, 2010
Paper Number: NACE-10216
.... Bacterial degradation or biodeterioration of concrete in sewer systems is a well documented issue that was first mentioned by Olmstead and Hamlin1 in 1900. C.D. Parker2 identified Thiobacillus genus bacteria as the source of biodeterioration in sewer systems. Though many investigators have studied...
Journal Articles
J Pet Technol 59 (01): 30–33.
Paper Number: SPE-0107-0030-JPT
Published: 01 January 2007
... be. Bacterial degradation of crude oil in the reservoir is the cause of the poor quality of oil found in many areas, from the Canadian tar sands to offshore fields. Some of the biochemical pathways of oil hydrocarbon transformation are known, but many remain to be clarified, including mechanisms that might...
Journal Articles
SPE Res Eval & Eng 5 (05): 375–383.
Paper Number: SPE-80168-PA
Published: 01 October 2002
..., oxygenated waters in contact with reservoir oil can cause extensive aerobic biodegradation. More recently, it has been recognized that anaerobic sulfate-reducing and fermenting bacteria also can degrade petroleum. Highly saline formation waters may inhibit bacterial degradation and effectively shield oils...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 3, 2001
Paper Number: SPE-71450-MS
... extensive aerobic biodegradation. More recently it has been recognized that anaerobic sulfate-reducing and fermenting bacteria can also degrade petroleum. Highly saline formation waters may inhibit bacterial degradation and effectively shield oils from oil-quality deterioration. The timing of hydrocarbon...
Proceedings Papers

Paper presented at the SPE Oilfield and Geothermal Chemistry Symposium, June 1–3, 1983
Paper Number: SPE-11775-MS
... operations. There are, however, several problems which have not yet been overcome. Perhaps the most important one is polymer degradation in the reservoir. Both types of polymers most commonly used in EOR (polyacrylamides and polysaccharides) are susceptible to both mechanical and bacterial degradation...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, November 9–12, 2015
Paper Number: SPE-177920-MS
... is a challenge. Accordingly, waste water treatment plant for reuse and waste pits and guard ponds were created to evaporate waste water. Due to waxy nature of oil in waste water, high level of suspended solids and bacterial degradation, natural evaporation is almost negligible. Waste water accumulation over...
Proceedings Papers

Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-437
.... Favorable migration and driving force for hydrocarbon affected the oil sands scale and geographic location. Water washing by meteoric water and bacterial degradation make hydrocarbon heavier and heavier. The paleo-delta facies, fluvial facies sands in compressional basin provide favorable space for oil...
Journal Articles
J Pet Technol 40 (09): 1217–1226.
Paper Number: SPE-14442-PA
Published: 01 September 1988
... to bacterial degradation. The resultant waterflood type displacement mechanism substantially slowed the mobilized oil displacement and recovery rate. However, current projections of ultimate tertiary oil recovery are approximately 47% of the oil-in-place in the total Benoist Sand. Assuming that all of the oil...
Journal Articles
J Pet Technol 39 (06): 684–696.
Paper Number: SPE-13036-PA
Published: 01 June 1987
... on the location. Tar Properties. The south Texas tar is one of the most dense and viscous hydrocarbons in the world. It is postulated that the unique physical and chemical properties of postulated that the unique physical and chemical properties of the tar are the result of severe bacterial degradation...
Proceedings Papers

Paper presented at the SPE Enhanced Oil Recovery Symposium, April 4–7, 1982
Paper Number: SPE-10862-MS
.... Approximately 60 percent of the waterflood residual oil in the pilot pattern was recovered. Ex- data for determining sweep and displacement efficiencies were obtained from observation well logs and fluid tracers. Although problems were en- countered with bacterial degradation of biopolymer and with produced oil...

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