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Título del libro: Asme International Mechanical Engineering Congress And Exposition, Proceedings
Título del capítulo: Evaluation of void fraction correlations for the statistical and numerical analysis of two-phase flows inside producing geothermal wells

Autores UNAM:
EDGAR ROLANDO SANTOYO GUTIERREZ; OCTAVIO GARCIA VALLADARES;

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Autores externos:

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Idioma:

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Año de publicación:
2009

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Palabras clave:

Cerro Prieto; Crucial parameters; Downholes; Empirical correlations; Flow parameters; Fluid flow; Gas void fraction; High quality; Mass flow rate; Measured data; Measured field; Pipe geometry; Pressure and temperature; Production performance; Relative concentration; Simulated results; Temperature gradient; Temperature log; Two phasis; Wellbore; Flow patterns; Fluid dynamics; Geothermal fields; Geothermal logging; Geothermal wells; Oil well logging; Pipe; Plasmas; Thermal gradients; Thermal logging; Void fraction; Wells; Two phase flow

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Resumen:

The modeling of heat and fluid flow inside two-phase geothermal wells is a vital task required for the study of the production performance. Gas void fraction is one of the crucial parameters required for a better prediction of pressure and temperature gradients in two-phase geothermal wells. This parameter affects the correct matching between simulated and measured data. Modeling of two-phase flow inside wells is complex because two phases exist concurrently (exhibiting various flow patterns that depend on their relative concentrations, the pipe geometry, and the mass flowrate). A reliable modeling requires the precise knowledge of the two-phase flow patterns (including their transitions and some flow parameters). In this work, ten empirical correlations were used to estimate the gas void fraction in vertical-inclined pipes, and to evaluate their effect on the prediction of two-phase flow characteristics of some Mexican geothermal wells. High quality downhole pressure/ temperature logs collected from four producing geothermal wells were studied [Los Azufres, Mich. (Az-18); Los Humeros, Pue. (H-1), and Cerro Prieto, B.C. (M-90 and M-201)]. The pressure/ temperature gradients were simulated using an improved version of the wellbore simulator GEOPOZO, and the gas void fraction correlations. The simulated results were statistically compared with measured field data. Copyright © 2008 by ASME.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9780791848715
Editorial:

Tipo de producto:
Conference Paper

DOI:
10.1115/IMECE2008-68926