| Title | Wet-Steam Well Discharges. I. Sampling and Calculation of Total Discharge Compositions |
|---|---|
| Authors | Stefán Arnórsson and Andri Stefánsson |
| Year | 2005 |
| Conference | World Geothermal Congress |
| Keywords | Wet-steam wells, sampling, analysis, total discharge composition |
| Abstract | Samples of water and steam from wet-steam well discharges are often collected under the same conditions, i.e. at the same pressure. It is, however, common to collect steam samples at elevated pressure and water samples from the weirbox. In the latter case some of the steam in the discharge is not collected or analysed. This steam is secondary and can therefore be expected to contain little gas. Indeed the approximation invariably made for calculation of total well discharge composition or aquifer fluid composition, when water and steam samples are collected at different pressures, is to take the gas content of the steam fraction not sampled to be zero. This approximation is unnecessary when water and steam samples are collected at the same pressure. In this contribution, a detailed procedure is given for calculation of the total discharge composition of wet-steam wells for different sampling scenarios. Another contribution (ArnÛrsson and Stef·nsson, 2005) describes methodology for calculating aquifer fluid compositions from data on water and steam samples collected at the wellhead. |