Simulation of Early-Time Response of Single-Well Steam Assisted Gravity Drainage (SW-SAGD)

1999 ◽  
Author(s):  
K.T. Elliott ◽  
A.R. Kovscek
Keyword(s):  
Early Time ◽  
Time Response ◽  
Gravity Drainage ◽  
Steam Assisted Gravity Drainage ◽  
Single Well

A Mechanistic Study of Single-Well Steam Assisted Gravity Drainage

2000 ◽  
Author(s):  
Ashok K. Singhal ◽  
Swapan Das ◽  
Jon Goldman ◽  
Alexandru T. Turta
Keyword(s):  
Gravity Drainage ◽  
Mechanistic Study ◽  
Steam Assisted Gravity Drainage ◽  
Single Well

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.

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