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Axisymmetric flow in an oil reservoir of finite depth caused by a point sink above an oil-water interface
Journal article   Peer reviewed

Axisymmetric flow in an oil reservoir of finite depth caused by a point sink above an oil-water interface

H. Zhang and G.C. Hocking
Journal of Engineering Mathematics, Vol.32(4), pp.365-376
1997
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Abstract

The flow of a stratified fluid (e.g., oil/water) withdrawn from a vertically confined porous medium through a point sink is considered. The withdrawal tends to cause the oil-water interface to move upwards. So long as the interface is below the well, the less dense fluid (oil) is pumped into the well without the denser fluid (water) until a critical flow rate is reached. The flow is considered to be axisymmetric, and involves a nonlinear boundary condition along the free surface. A boundary-integral equation method (BIEM) is used to find the interface position for different pumping rates. For small flow rates, a small-parameter expansion is derived and the results are compared with numerical solutions to the problem. There exists a critical withdrawal rate beneath which the water does not break through into the sink, this rate depending on the sink location and bottom geometry.

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Collaboration types
Domestic collaboration
Citation topics
8 Earth Sciences
8.205 Ocean Dynamics
8.205.2114 Hydraulic Flows
Web Of Science research areas
Engineering, Multidisciplinary
Mathematics, Interdisciplinary Applications
ESI research areas
Engineering
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