The effects of wettability alterations in a 2D network model of a porous media has been studied. By changing the wetting properties of the reservoir through a developed wettability changing algorithm, previously immobile oil clusters in the network are re-mobilized, leading to significant changes in the steady state flow distribution of the model porous mediaThis caused de-stabilization of percolating and trapped clusters as the wettability was changed from an oil wet to a mixed wet system.A critical transition at a certain wetting angle, depending on the initial saturation and lattice size of the system was found. This indicating a possible phase transition from a percolating flow regime to a more uniform flow distribution through the network model. A link between changes in fractional flow and a percolation transition is also suspected, and using the theoretical framework of percolation theory, critical exponents were estimated.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:ntnu-19256 |
| Date | January 2012 |
| Creators | Flovik, Vegard |
| Publisher | Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, Institutt for fysikk |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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