Effect of Mud Clasts on Stochastic Permeability Modeling for Steam Assisted Gravity Drainage (SAGD) Production Forecasting in the Athabasca Oil Sands, Canada

2008 ◽  
Author(s):  
Koji Kashihara ◽  
Koji Hosokoshi
Keyword(s):  
Oil Sands ◽  
Gravity Drainage ◽  
Athabasca Oil Sands ◽  
Permeability Modeling ◽  
Steam Assisted Gravity Drainage ◽  
Production Forecasting

scholarly journals Identifying Reservoir Features via iSOR Response Behaviour

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 427
Author(s):  
Jingyi Wang ◽  
Ian Gates
Keyword(s):  
Oil Sands ◽  
Gravity Drainage ◽  
Athabasca Oil Sands ◽  
Steam Chamber ◽  
Heterogeneous Reservoirs ◽  
Steam Assisted Gravity Drainage ◽  
Response Behaviour

To extract viscous bitumen from oil sands reservoirs, steam is injected into the formation to lower the bitumen’s viscosity enabling sufficient mobility for its production to the surface. Steam-assisted gravity drainage (SAGD) is the preferred process for Athabasca oil sands reservoirs but its performance suffers in heterogeneous reservoirs leading to an elevated steam-to-oil ratio (SOR) above that which would be observed in a clean oil sands reservoir. This implies that the SOR could be used as a signature to understand the nature of heterogeneities or other features in reservoirs. In the research reported here, the use of the SOR as a signal to provide information on the heterogeneity of the reservoir is explored. The analysis conducted on prototypical reservoirs reveals that the instantaneous SOR (iSOR) can be used to identify reservoir features. The results show that the iSOR profile exhibits specific signatures that can be used to identify when the steam chamber reaches the top of the formation, a lean zone, a top gas zone, and shale layers.

Characterization and Comparison of Dissolved Organic Matter Signatures in Steam-Assisted Gravity Drainage Process Water Samples from Athabasca Oil Sands

2017 ◽  
Vol 31 (8) ◽  
pp. 8363-8373 ◽  
Author(s):  
Rajesh G. Pillai ◽  
Ni Yang ◽  
Steven Thi ◽  
Jannat Fatema ◽  
Mohtada Sadrzadeh ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Water Samples ◽  
Oil Sands ◽  
Process Water ◽  
Gravity Drainage ◽  
Athabasca Oil Sands ◽  
Steam Assisted Gravity Drainage

15. Geostatistical Reservoir Modeling Focusing on the Effect of Mudstone Clasts on Permeability for the Steam-Assisted Gravity Drainage Process in the Athabasca Oil Sands

Heavy Oils ◽  
2010 ◽  
pp. 203-214 ◽  
Author(s):  
Koji Kashihara ◽  
Akihisa Takahashi ◽  
Takashi Tsuji ◽  
Takahiro Torigoe ◽  
Koji Hosokoshi ◽  
...  
Keyword(s):  
Oil Sands ◽  
Reservoir Modeling ◽  
Gravity Drainage ◽  
Athabasca Oil Sands ◽  
Steam Assisted Gravity Drainage

Economic and environmental analysis of a Steam Assisted Gravity Drainage (SAGD) facility for oil recovery from Canadian oil sands

2015 ◽  
Vol 142 ◽  
pp. 1-9 ◽  
Author(s):  
Giancarlo Giacchetta ◽  
Mariella Leporini ◽  
Barbara Marchetti
Keyword(s):  
Environmental Analysis ◽  
Oil Recovery ◽  
Oil Sands ◽  
Gravity Drainage ◽  
Steam Assisted Gravity Drainage

Numerical Simulation of Thermal Solvent Replacing Steam under Steam Assisted Gravity Drainage SAGD Process

2010 ◽  
Author(s):  
Weiqiang Li ◽  
Daulat D. Mamora
Keyword(s):  
High Temperature ◽  
Oil Recovery ◽  
Oil Sands ◽  
Steam Injection ◽  
Thermal Recovery ◽  
Production Performance ◽  
Gravity Drainage ◽  
Steam Assisted Gravity Drainage ◽  
Recovery Technique ◽  
Simulation Results

Abstract Steam Assisted Gravity Drainage (SAGD) is one successful thermal recovery technique applied in the Athabasca oil sands in Canada to produce the very viscous bitumen. Water for SAGD is limited in supply and expensive to treat and to generate steam. Consequently, we conducted a study into injecting high-temperature solvent instead of steam to recover Athabasca oil. In this study, hexane (C6) coinjection at condensing condition is simulated using CMG STARS to analyze the drainage mechanism inside the vapor-solvent chamber. The production performance is compared with an equivalent steam injection case based on the same Athabasca reservoir condition. Simulation results show that C6 is vaporized and transported into the vapor-solvent chamber. At the condensing condition, high temperature C6 reduces the viscosity of the bitumen more efficiently than steam and can displace out all the original oil. The oil production rate with C6 injection is about 1.5 to 2 times that of steam injection with oil recovery factor of about 100% oil initially-in-place. Most of the injected C6 can be recycled from the reservoir and from the produced oil, thus significantly reduce the solvent cost. Results of our study indicate that high-temperature solvent injection appears feasible although further technical and economic evaluation of the process is required.

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