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- W187801857 abstract "Various reservoir properties are calculated for the Larderello vapor-dominated system using available published data. Bottom-hole flowing properties are calculated from measured wellhead data. Whereas wellhead temperatures measured at a particular time tend to change systematically with changes in flow and pressure, calculated bottom-hole temperatures tend to be constant for two sample wells; while for a third, bottom-hole temperatures decrease with increasing flow. Bottom-hole temperatures calculated from wellhead data taken over several years can be constant, increase, or decrease for particular wells. A steady-state model for steam flow to a well is used with calculated bottom-hole data to show that the effect of non-Darcy flow is important. The initial mass of fluid in place for the northeast zone of Larderello (56 km2) is estimated, using data on shut-in pressures and total mass production. Reservoir thickness needed to store this mass of fluid is calculated as a function of porosity and initial fraction of water in pores. Representative values are 19 km of thickness, assuming 5% porosity with steam alone, and 832 m, assuming 20% porosity and 10% of pore volume as liquid water." @default.
- W187801857 created "2016-06-24" @default.
- W187801857 creator A5079945261 @default.
- W187801857 date "1975-01-01" @default.
- W187801857 modified "2023-09-26" @default.
- W187801857 title "Some reservoir engineering calculations for the vapor-dominated system at Larderello, Italy" @default.
- W187801857 doi "https://doi.org/10.3133/ofr75142" @default.
- W187801857 hasPublicationYear "1975" @default.
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