The purpose of this paper is to illustrate and discuss practical application of pressure buildup test theory in The Geysers steam reservoir. This field, located in Sonoma County in Northern California, has installed generating capacity of 522 MW. Total withdrawal rate is approximately 8.5 million pounds per hour from 93 wells. The reservoir is naturally fractured greywacke, a very competent rock with low interstitial porosity and permeability. It is underpressured, initial pressure being approximately 520 psia at sea level datum. Static pressure gradient is that of saturated steam to total depths reached to date.

Press the Back button in your browser, or search again.

Copyright 1976, Stanford Geothermal Program: Readers who download papers from this site should honor the copyright of the original authors and may not copy or distribute the work further without the permission of the original publisher.