| Abstract |
Noncondensable gases in geothermal fluids have major effects on the behavior of the reservoir and fluid flow. The most common and dominant noncondensable gas in geothermal fields is carbon dioxide. Therefore effects of the content on the flow characteristics and thermodynamic properties must be known. In this study the compressibility of the geotheml fluids containing low dissolved at flashing point is formulated for isoenthalpicphase change. The compressibilitycalled as isoenthalpic flashing point compressibility can be calculated with well-known parameters such as saturated water and steam densities, steam pressure and Henry's constant for New easy to use graphs to estimate the compressibilityfor such systems are presented. Correction for ionic strength of the brine is also considered. The practical use of the compressibilityis illustrated by using a material balance method to estimate the fluid content of a geothermal reservoir. |