By Boyun Guo
With fast alterations in box improvement tools being created during the last few a long time, there's a becoming desire for additional information relating to energizing good creation. Written by means of the world's most valuable petroleum engineering authors, Well productiveness Handbook offers up-to-date wisdom for modeling oil and fuel wells with uncomplicated and complicated trajectories. overlaying severe subject matters, akin to petroleum fluid houses, reservoir deliverability, wellbore circulate functionality and productiveness of clever good structures, this instruction manual explains real-world purposes illustrated with instance difficulties. desktop courses also are supplied in a complimentary CD, effortless to take advantage of via petroleum and reservoir engineers of all levels.
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5 Gas Density Because gas is compressible, its density is a function of its pressure and temperature. 60) where m is mass of gas and ρg is gas density. 61) where the gas density is expressed in lbm/ft3. 65 contains 10% N2, 8% CO2, and 2% H2S. Estimate the z-factor and gas density at 5,000 psia and 180°F. xls, as shown in Table 2-6. 63) The gas formation volume factor is frequently used in mathematical modeling of the gas well inflow performance relationship (IPR). xls Instruction: This spreadsheet computes gas compressibility factor with Hall-Yarborough method.
Water specific gravity is defined as the ratio of density of the produced water to that of pure water. In practice, the water density, specific gravity, and salinity are inter-convertible, as their relationships depend on the types of salts dissolved in the water. 2 Water Viscosity The viscosity of water is affected by its salinity, dissolved gas content, pressure, and temperature, with temperature being the most significant factor. 71) where Bw = formation volume factor of water (rb/stb) Vres = water volume in reservoir condition (rb) Vst = water volume at surface conditions (STP, stb) For typical oil-field brines, formation volume factors are very close to one.
In practice, the water density, specific gravity, and salinity are inter-convertible, as their relationships depend on the types of salts dissolved in the water. 2 Water Viscosity The viscosity of water is affected by its salinity, dissolved gas content, pressure, and temperature, with temperature being the most significant factor. 71) where Bw = formation volume factor of water (rb/stb) Vres = water volume in reservoir condition (rb) Vst = water volume at surface conditions (STP, stb) For typical oil-field brines, formation volume factors are very close to one.
Well Productivity Handbook by Boyun Guo