Print Email Facebook Twitter Development of heterogeneous slope reservoirs for different production mechanisms Title Development of heterogeneous slope reservoirs for different production mechanisms Author Meijer, L.A. Contributor Jansen, J.D. (mentor) Luthi, S.M. (mentor) Faculty Civil Engineering and Geosciences Department Geoscience & Engineering Programme Petroleum Engineering & Geosciences Date 2012-08-21 Abstract Deep-marine slope and base-of-slope hydrocarbon reservoirs are difficult to model and produce because of their size and complex nature. The oil and gas industry focuses on easily producible reservoirs in channelized deposits, thereby leaving considerable volumes in the more heterogeneous external levees and lobes. This thesis is on how such systems can be modelled and produced as a whole and how variation of input parameters can affect the recovery factor in its reservoirs. A conceptual reservoir model consisting of different facies regions was created based on geometries found in literature, after which realistic petrophysical data from field analogues were implemented. Fifty-six simulation cases were defined to test the effect of using different upscaled grid sizes, production mechanisms, fluid types, well lay-out and rock properties on the recovery factor. Deep-marine slope and base-of-slope reservoirs can be modelled reasonably well by using object-based modelling for the channels and internal levees, truncated Gaussian simulation for the external levees and multi-point facies simulation for the fan region. Fluid flow simulations show that specially upscaling and application of different water saturation functions have a significant impact on the modelled recovery factor. Furthermore, reservoirs of this kind can be produced best by aiding the natural production mechanisms with water injection. Wells should be deviated, because they have a larger contact area with the reservoir sections than vertical wells, and horizontal wells are less effective due to the deposits’ inherent vertical heterogeneity. Well orientation should be perpendicular to the principal paleoflow direction. To increase oil production, the external levees can be produced with deviated injectors and producers oriented parallel to the channel belt. Subject slope reservoirsrecovery factorconceptual modeldeep-marineheterogeneoussimulationsgeology To reference this document use: http://resolver.tudelft.nl/uuid:c213e59d-c1fc-47b8-8a52-e321c757c190 Part of collection Student theses Document type master thesis Rights (c) 2012 Meijer, L.A. Files PDF Thesis_Louise_Meijer_-_Fi ... August.pdf 5.73 MB Close viewer /islandora/object/uuid%3Ac213e59d-c1fc-47b8-8a52-e321c757c190/datastream/OBJ/view