New Air Injection Technology For IOR Operations In Light And Heavy Oil Reservoirs

1999 ◽  
Author(s):  
M. Gréaves ◽  
S.R. Ren ◽  
T.X. Xia
Keyword(s):  
Heavy Oil ◽  
Air Injection ◽  
Oil Reservoirs ◽  
Heavy Oil Reservoirs ◽  
Injection Technology

Air Injection Recovery of Cold-Produced Heavy Oil Reservoirs

2001 ◽  
Author(s):  
K.A. Miller ◽  
R.G. Moore ◽  
M.G. Ursenbach ◽  
C.J. Laureshen ◽  
S.A. Mehta
Keyword(s):  
Heavy Oil ◽  
Air Injection ◽  
Oil Reservoirs ◽  
Heavy Oil Reservoirs

Proposed Air Injection Recovery of Cold-Produced Heavy Oil Reservoirs

2002 ◽  
Vol 41 (03) ◽  
Author(s):  
K.A. Miller ◽  
R.G. Moore ◽  
R.G. Ursenbach ◽  
C.J. Laureshen ◽  
S.A. Mehta
Keyword(s):  
Heavy Oil ◽  
Air Injection ◽  
Oil Reservoirs ◽  
Heavy Oil Reservoirs

Air Injection into Light and Medium Heavy Oil Reservoirs

2000 ◽  
Vol 78 (5) ◽  
pp. 721-730 ◽  
Author(s):  
M. Greaves ◽  
T.J. Young ◽  
S. El-Usta ◽  
R.R. Rathbone ◽  
S.R. Ren ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Air Injection ◽  
Oil Reservoirs ◽  
Heavy Oil Reservoirs

Air Injection in Heavy Oil Reservoirs - A Process Whose Time Has Come (Again)

2010 ◽  
Vol 49 (01) ◽  
pp. 48-54 ◽  
Author(s):  
M.G. Ursenbach ◽  
R.G. Moore ◽  
S.A. Mehta
Keyword(s):  
Heavy Oil ◽  
Air Injection ◽  
Oil Reservoirs ◽  
Heavy Oil Reservoirs

The Research and Application of Segregated Completion Technology in Horizontal Wells in the Heavy Oil Reservoirs

2014 ◽  
Vol 694 ◽  
pp. 350-353
Author(s):  
Zhen Yu Sun ◽  
Ji Cheng Zhao
Keyword(s):  
Heavy Oil ◽  
Horizontal Wells ◽  
Steam Injection ◽  
Thermal Recovery ◽  
Oil Reservoirs ◽  
Oil Well ◽  
Horizontal Section ◽  
Liaohe Oilfield ◽  
Heavy Oil Reservoirs ◽  
Injection Technology

Liaohe oilfield is the biggest production base of the heavy oil in China. There are more than 800 horizontal wells with thermal recovery in the heavy oil reservoirs. Most of them adopt screen to complete the wells without packer outside of the casing, which results in packing off annulus space between screen and layer and only commingled steam or step steam can be injected inside the screen. Because of the areal and vertical anisotropy of the reservoirs, the horizontal sections are exploited unequally. According to the statistics, the horizontal wells with nonuniform exploitation accounts for 80 percent of all the horizontal wells with thermal recovery, and only 1/3 to 1/2 of the horizontal sections are comparatively well produced. The oil well productivity is seriously affected. So based on step steam injection inside the screen, we have developed the segregated completion and segregated steam injection technology applied to the horizontal wells with thermal recovery in heavy oil reservoirs. By means of the research on the segregated completion technology and development of high temperature ECP and casing thermal centralizer, which formed the corresponding technology applied in the horizontal wells with thermal recovery. Till now this technology has been applied in 8 wells, and average cyclic steam/oil ratio increased 0.1 plus, and the uniform development level of the horizontal section has been improved and the oilfield’s development effect has been advanced obviously.

scholarly journals Study of Displacement Characteristics of Fire Flooding in Different Viscosity Heavy Oil Reservoirs

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Bingyan Liu ◽  
Jinzhong Liang ◽  
Fang Zhao ◽  
Tong Liu ◽  
Zongyao Qi ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Early Stage ◽  
Injection Pressure ◽  
High Viscosity ◽  
Production Performance ◽  
Air Injection ◽  
Oil Reservoirs ◽  
Stable Combustion ◽  
Heavy Oil Reservoirs ◽  
Water Cut

A field test in the Xinjiang oilfield in China shows that the viscosity of heavy oil has a certain influence on the combustion dynamics and injection-production performance of fire flooding. The experiment in this study uses a one-dimensional combustion tube to study the temperature, gas composition, and air injection pressure and the production performance of the fire flooding of heavy oil with different viscosities. The results show that the oil viscosities of 1180–22500 mPa·s can achieve stable combustion, and the O2 content of the gas produced during the stable combustion stage is <0.5%. The higher the viscosity of the heavy oil, the higher the temperature in the burned zone and the smaller the range of the temperature increase in the unburned zone. The air injection pressure will increase rapidly until a stable seepage channel is formed, and then, it will drop to a level close to the formation pressure. High-viscosity heavy oil requires a higher air injection pressure and will remain in the high-pressure stage for a longer period of time. Low-viscosity heavy oil has a low water cut in the early stage of fire flooding, a large oil production rate, and a low and stable air–oil ratio. The water cut of high-viscosity heavy oil increases rapidly in the early stage of fire flooding and then decreases gradually, so a good air–oil ratio can only be obtained in the middle and late stages of fire flooding. Thus, fire flooding may be more suitable for application in common heavy oil and some extra heavy oil reservoirs with lower viscosities.

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