A large body of field data from Larderello shows striking temporal correlations between decline of well flow-rate, produced gaslsteam ratio, chloride concentration and produced vapor fraction. The latter is inferred from measured concentrations of non-condensible gases in samples of well fluid, using chemical phase equilibrium principles. Observed temporal changes in the vapor fractions can be interpreted in term of a 'multiple source' model, aa suggested by D'Amore 6 Truesdell (1979). This provides clues to the dynamics of reservoir depletion, and to the evaluation of well productivity and longevity.

Press the Back button in your browser, or search again.

Copyright 1985, Stanford Geothermal Program: Readers who download papers from this site should honor the copyright of the original authors and may not copy or distribute the work further without the permission of the original publisher.