Elements of Petroleum Reservoirs |
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amount behavior burning front cap drive reservoir capillary forces cause cent characteristics combination drive completion intervals condensate gas CONNATE WATER Courtesy WORLD displace oil displacing fluid dissolved gas drive drive process dry gas economic efficiency factors field film flow formation free gas front velocity gas cap drive gas reservoirs gas-cap gas-oil ratio heavier components high permeability high pressure hydrocarbon increased intermediate kinetic energy liquid low permeability low pressure material maximum methane miscible drive molecules move occurs oil and gas oil production oil recovery oil reservoir OIL ZONE operations pattern PERM pore channels pore spaces porosity pressure drops production rates propane quantity reser reservoir drive reservoir engineering reservoir oil reservoir pressure reservoir rock residual oil retrograde condensation sand grains secondary recovery separation shown in Fig steam stock tank surface tension temperature and pressure tion tube vapor viscosity voir volume volumetric balance water drive reservoir water production water saturation wellbore