Downhole Pressure, Temperature and Flowrate Measurements in Steam Wells at the Geysers Field


K.L. Enedy

Geo Location:

The Geysers, California


Stanford Geothermal Workshop




Well Testing



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Recently developed pressure-temperature spinner (PTS) tools are used to collect reliable downhole measurements in geothermal systems, such as at The Geysers. PTS surveys in several flowing Geysers steam wells were used to quantify steam entry location and magnitude, wellbore heat loss, pressure drop due to friction, thermodynamic properties of the steam, and maximum rock temperature. Interwell cross flow/interference was identified in one well. Finally, a single-phase saturated steam wellbore model used to compare calculated to measured downhole values, was found to adequately predict the flowing pressure versus depth curves in vapor filled holes.

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