Development of Heavy Oil Deposits and Natural Bitumen With Small and Variable Thickness of the Formation the System of Horizontal Wells

2014 ◽  
Author(s):  
V. Korepanova
Keyword(s):  
Variable Thickness ◽  
Heavy Oil ◽  
Horizontal Wells ◽  
Natural Bitumen ◽  
Oil Deposits

scholarly journals Biodegradation of natural bitumen by Providencia stuartii isolated from heavy oil contaminated soil

2017 ◽  
Vol 19 (2) ◽  
pp. 353-358
Keyword(s):  
Optical Density ◽  
Heavy Oil ◽  
Degradation Products ◽  
Polluted Soil ◽  
Gas Chromatography Mass Spectrometry ◽  
Natural Bitumen ◽  
Soil P ◽  
Independent Variables ◽  
Providencia Stuartii ◽  
New Compounds

Abundance and availability of unconventional petroleum has led to intensified exploitation and exploration of the bitumen reserves. This has however led to environmental pollution. This study investigated the ability of Providencia stuartii isolated from heavy oil polluted soil to degrade natural bitumen. Temperature, pH and incubation period were independent variables used for optimization of degradation while optical density was used as dependent variable. Optical density was measured using a UV-Vis spectrophotometer. Residual bitumen/degradation products were analyzed using gas chromatography- mass spectrometry (GC-MS). Optical densities obtained ranged from 0.002 to 0.408. Optimum optical density of 0.408 was obtained at 40 oC and pH 7 after 13 days of incubation. There were significant changes in the composition of bitumen after analysis with GC-MS with detection of new compounds due to degradation. The GC-MS results showed the presence of some degradation products such as benzene (1-butylhexyl), benzene (1-propylheptyl) and 23, 28-bisnor-17.β.(h)-hopane. This study revealed the excellent ability of P. stuartii in degrading bitumen contaminated environment.

scholarly journals CO 2 and viscosity breaker assisted steam huff and puff technology for horizontal wells in a super-heavy oil reservoir

2011 ◽  
Vol 38 (5) ◽  
pp. 600-605 ◽  
Author(s):  
Zhaomin Li ◽  
Teng Lu ◽  
Lei Tao ◽  
Binfei Li ◽  
Jiguo Zhang ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Horizontal Wells ◽  
Oil Reservoir ◽  
Heavy Oil Reservoir
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