scholarly journals Production of geothermal fluids by the natural flashing process. Design and analysis of geothermal wells in two-phase flow. First annual report

1976 ◽  
Author(s):  

1993 ◽  
Vol 17 (5) ◽  
pp. 236-245 ◽  
Author(s):  
P.K. Chadha ◽  
M.R. Malin ◽  
A. Palacio-Perez


Author(s):  
A. A´lvarez del Castillo ◽  
E. Santoyo ◽  
O. Garci´a-Valladares ◽  
P. Sa´nchez-Upton

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.



Geothermics ◽  
1982 ◽  
Vol 11 (3) ◽  
pp. 175-191 ◽  
Author(s):  
A. Barelli ◽  
R. Corsi ◽  
G. Del Pizzo ◽  
C. Scali




1978 ◽  
Vol 18 (1) ◽  
pp. 45-51 ◽  
Author(s):  
S.K. Garg ◽  
J.W. Pritchett


Author(s):  
Jón-Steinar Gudmundsson




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