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Polymer/oil relative permeabilities in carbonate reservoirs
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Date
2005
Author
Cankara, İlker
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In the history of a reservoir, after the period of primary production, about 30 to 40%, of the original oil in place may be produced using a secondary recovery mechanism. Polymer injection, which is classified as a tertiary method, can be applied to the remaining oil in place. In this thesis, oil/water relative permeabilities, effect of polymer injection on end point relative permeabilities and residual oil saturations in heterogeneous carbonate reservoirs were investigated. Numereous core flood experiments were conducted on different heteroegneous carbonate cores taken from Midyat Formation. Before starting the displacement experiments, porosity, permeability and capillary pressure experiments were performed. The heterogeneity of the cores are depicted from thin sections. Besides the main aim stated above, effect of flow rate and fracture presence on end point relative permeability and on residual oil saturation and were investigated. According to the results of the displacement tests, end point hexane relative permeability increased when polymer solution was used as the displacing phase.Besides, end point hexane relative permeability increased with polymer injection and fracture presence.
Subject Keywords
Oil reservoir engineering.
,
Carbonate reservoirs.
URI
http://etd.lib.metu.edu.tr/upload/12606014/index.pdf
https://hdl.handle.net/11511/15048
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Graduate School of Natural and Applied Sciences, Thesis
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İ. Cankara, “Polymer/oil relative permeabilities in carbonate reservoirs,” M.S. - Master of Science, Middle East Technical University, 2005.