Modeling and Simulation of Chemical Additives and Foam Assisted SAGD
| Autor: | Chen, Zhangxin Li, Ran Wu, Keliu |
|---|---|
| EAN: | 9786202003414 |
| Sachgruppe: | Technik |
| Sprache: | Englisch |
| Seitenzahl: | 100 |
| Produktart: | Kartoniert / Broschiert |
| Veröffentlichungsdatum: | 04.01.2018 |
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Adding chemical additives with in-situ generation of foam is an approach to enhance SAGD (steam assisted gravity drainage) performance both in terms of oil production and SOR (steam-oil ratio). Simulation studies tell that, owing to gas mobility control, interfacial tension reduction and emulsification, a steam chamber profile is substantially controlled with reduced heat loss and residual oil saturation drops significantly. Strong foam accumulates along the inner boundary of a steam chamber owing to lower capillary pressure and higher nitrogen concentration. A heterogeneous model based on an Athabasca project is employed to show that bubbles are conducive to improve volumetric sweep by diverting steam into a low permeable area. Simultaneously, foam favors to reduce the influences of a top water zone and maintain bowl-shaped and uniformly-developed steam chamber growth.
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