Simulation Studies of Process Improvement of Three-Tower Low-Temperature Distillation Process to Minimize Energy Consumption for Separation of Produced Gas of CO2-Enhanced Oil Recovery (EOR)

2015 ◽  
Vol 93 (7) ◽  
pp. 1266-1274
Author(s):  
Jingjing Sun ◽  
Wichitpan Rongwong ◽  
Zhiwu Liang ◽  
Hongxia Gao ◽  
Raphael O. Idem ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Low Temperature ◽  
Enhanced Oil Recovery ◽  
Process Improvement ◽  
Oil Recovery ◽  
Simulation Studies ◽  
Distillation Process

Microorganisms of low-temperature heavy oil reservoirs (Russia) and their possible application for enhanced oil recovery

Microbiology ◽  
2017 ◽  
Vol 86 (6) ◽  
pp. 773-785 ◽  
Author(s):  
T. N. Nazina ◽  
D. Sh. Sokolova ◽  
T. L. Babich ◽  
E. M. Semenova ◽  
A. P. Ershov ◽  
...  
Keyword(s):  
Low Temperature ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Oil Reservoirs ◽  
Heavy Oil Reservoirs

Research on Efficient Microbial Enhanced Oil Recovery Technology Based on Low-Temperature Heavy Oil

2013 ◽  
Vol 734-737 ◽  
pp. 1434-1439 ◽  
Author(s):  
Gang Wu ◽  
Fu Ping Ren ◽  
Jing You ◽  
Ji Liang Yu ◽  
Ya Tuo Pei ◽  
...  
Keyword(s):  
Low Temperature ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Average Concentration ◽  
Oil Field ◽  
Oil Reservoir ◽  
Oil Degradation ◽  
Microbial Enhanced Oil Recovery ◽  
Well Pattern

Based on the low-temperature and heavy oil reservoir of conventional injection well pattern separated two strains of oil degradation bacteria LC and JH which had satisfactory compatibleness with BaoLige oill field. In order to study the feasibility of enhancing oil recovery rate of the two strains, the experiment of huff and puff with 15 wells were carried out. The average concentration of bacteria increase from 4.7×102cells/ml to 8.1×106cells/ml. The average reduction of surface tension and viscosity is 33.1% and 31.9%. The accumulative total was 1163.2t. The ratio of input to output was 1:2.12. Microbial enhanced oil recovery can improve the low-temperature and heavy oil production status, which provide a effective method for the similar oil field.

Low temperature hydrothermal treatment of palm fiber fuel for simultaneous potassium removal, enhanced oil recovery and biogas production

Fuel ◽  
2018 ◽  
Vol 234 ◽  
pp. 1055-1063 ◽  
Author(s):  
Chhenglong Tan ◽  
Kanyarat Saritpongteeraka ◽  
Suratsawadee Kungsanant ◽  
Boonya Charnnok ◽  
Sumate Chaiprapat
Keyword(s):  
Low Temperature ◽  
Hydrothermal Treatment ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Biogas Production ◽  
Palm Fiber

Investigation of Reduced Interfacial Tension by Surfactant Flooding in Mixed-Wet Reservoirs

2021 ◽  
Author(s):  
Usman Aslam
Keyword(s):  
Interfacial Tension ◽  
Capillary Pressure ◽  
Enhanced Oil Recovery ◽  
Relative Permeability ◽  
Oil Recovery ◽  
Simulation Studies ◽  
Surfactant Flooding ◽  
Gravity Segregation ◽  
Simulation Results ◽  
Capillary Pressure Curves

Abstract Surfactant flooding has long been considered a reliable solution for enhanced oil recovery, either by reducing oil-water interfacial tension (IFT) or through wettability alteration. This paper reveals the effect that reduced IFT has on capillary trapping in heterogeneous reservoirs. This effect is investigated through various numerical experiments on different simulation models where rock capillary pressure is assumed to scale with IFT. Capillary contrast on the scale of a few centimeters to a few tens of meters is reduced in the presence of surfactants. This reduction in IFT, under very specific circumstances, creates favorable conditions for increased or accelerated hydrocarbon production from mixed-wet reservoirs. The focus of this study is to ascertain the effectiveness of surfactant flooding in mixed-wet reservoirs. Simulation studies of different mechanisms which are believed to occur in mixed-wet reservoirs are presented. Simulation results indicate the promising effect of surfactant flooding on oil recovery, depending on the type of reservoir. Detailed fine-scale simulation studies are carried out with representative relative permeability and imbibition capillary pressure curves from mixed-wet cores. By designing and selecting a series of surfactants to lower the IFT to the range of 10-3dynes/cm, a recovery of 10 to 20% of the original oil-in-place is technically and economically feasible. The efficiency of surfactant flooding is investigated through sensitivity scenarios on formation rock/fluid parameters, including permeability, interfacial tension, rate flow, etc. Geological heterogeneity (layering and heterogeneous inclusions), imbibition capillary pressure curves, viscous/capillary balance (Nc), and gravitational forces were all found to have an impact on recovery by surfactant flooding. Numerical model dimensions, permeability, IFT, density contrast between oil and water, and injection flow rates were found to be the critical parameters influencing simulation results. Gravity segregation, typically ignored in earlier studies, was found to have a significant effect on reservoir performance. Two different numerical models, with and without impermeable shale streaks, were used to capture the gravity segregation effect. The results revealed that the reduction in interfacial tension helps gravity to segregate oil and water, ultimately resulting in improved oil recovery. Moreover, results from the numerical simulation studies revealed that either an inexpensive or a good quality surfactant at low concentration can be used to obtain the same enhanced oil recovery. The effect of change in oil relative permeability curvature, due to reduced interfacial tension, also revealed a reduction in the remaining oil saturation with an increase in the capillary number.

scholarly journals Experimental and simulation studies for optimization of water–alternating-gas (CO2) flooding for enhanced oil recovery

2020 ◽  
Vol 5 (3) ◽  
pp. 227-234
Author(s):  
Swapnil Pancholi ◽  
Gudendra Singh Negi ◽  
Jatin R. Agarwal ◽  
Achinta Bera ◽  
Maunish Shah
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Simulation Studies ◽  
Co2 Flooding ◽  
Water Alternating Gas
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