1887

Abstract

The connected fracture network in densely fractured reservoirs has a strong impact on reservoir<br>displacement mechanisms. Due to the high fracture permeability no significant pressure differentials<br>across oil bearing matrix blocks can be established to drive oil from matrix into the fracture. One has to<br>rely on natural mechanisms like capillary imbibition or gravity to recover oil from the matrix rock. Often<br>the matrix rock is oil-wet or mixed wet and only gravity drainage remains a feasible process. Usually,<br>however, permeabilities are low, <10 mDarcy, resulting in low gravity drainage production rates with high<br>remaining oil saturation and/or capillary holdup.

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/content/papers/10.3997/2214-4609.201404824
2009-04-27
2020-04-01
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