Thai - New Air Injection Technology For Heavy Oil Recovery And In Situ Upgrading

10.2118/99-15 ◽  
1999 ◽  
Author(s):  
M. Greaves ◽  
A. El-Sakr ◽  
T.X. Xia ◽  
C. Ayasse ◽  
A. Turta
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
Air Injection ◽  
Heavy Oil Recovery ◽  
Injection Technology

THAI-New Air Injection Technology for Heavy Oil Recovery and In Situ Upgrading

2001 ◽  
Vol 40 (03) ◽  
Author(s):  
M. Greaves ◽  
A.M. Saghr ◽  
T.X. Xia ◽  
A. Turtar ◽  
C. Ayasse
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
Air Injection ◽  
Heavy Oil Recovery ◽  
Injection Technology

Performance and important engineering aspects of air injection assisted in situ upgrading process for heavy oil recovery

2021 ◽  
Vol 202 ◽  
pp. 108554
Author(s):  
Shufeng Pei ◽  
Guodong Cui ◽  
Liang Zhang ◽  
Panfeng Zhang ◽  
Lijuan Huang ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
Air Injection ◽  
Heavy Oil Recovery

scholarly journals Dynamic Simulation of the Toe-to-Heel Air Injection Heavy Oil Recovery Process

2017 ◽  
Vol 31 (2) ◽  
pp. 1276-1284 ◽  
Author(s):  
Muhammad Rabiu Ado ◽  
Malcolm Greaves ◽  
Sean P. Rigby
Keyword(s):  
Dynamic Simulation ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Recovery Process ◽  
Air Injection ◽  
Heavy Oil Recovery

scholarly journals Optimal Control Of Atmospheric Air Injection For Enhanced Oil Recovery

2021 ◽  
Author(s):  
Shahrad Khodaei Booran
Keyword(s):  
Optimal Control ◽  
Temperature Variation ◽  
Enhanced Oil Recovery ◽  
Constant Temperature ◽  
Air Temperature ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Air Injection ◽  
Maximum Temperature ◽  
Heavy Oil Recovery

Gas-based enhanced oil recovery (EOR) processes rely on the injection of gases such as carbon dioxide, nitrogen, and natural gas into heavy oil reservoirs to reduce inherent oil viscosity. Although these processes are very promising, they face the problem of limited and costly gas supply. This study investigates the conditions, specifically temperature variation, under which freely available air at low temperatures, low pressures, and non-reactive environments for heavy oil recovery. To that end, preliminary experiments are carried out to demonstrate the possibility of beneficial effects of air temperature variation with time. Furthermore, this research aims to utilize the theory of optimal control to determine optimal air temperature versus time function to maximize the heavy oil recovery. For this purpose, the conditions necessary for optimal control are derived and utilized in a computational algorithm. The preliminary experiments are executed by injecting air into a lab-scale heavy oil reservoir at different pressures (0.169-0.514 MPa absolute) and temperatures in the range of 25-90oC. Reservoirs of four different permeabilities (40-427 Darcy) are used in experiments. When air is injected with a periodic temperature variation between 90oC and 75oC that has an average of 78oC, the recovery is increased from 58.2% to 69.1% of the original-oil-in-place (OOIP) in comparison to that using constant temperature air injection at the maximum temperature of 90oC. That is a considerable improvement of oil recovery by 18.6%. Furthermore, utilizing optimal control the optimal interfacial temperature versus time (control policy) is determined between 90oC and 82oC, which registers 20.66% increase in the oil recovery in comparison to that at the constant temperature of 90oC. The accuracy of optimal control is experimentally validated. The results show that the average relative difference between the predicted heavy oil recovery and the experimental value is a low value of 1.82%.

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