Many geothermal reservoirs contain two-phase (waterfsteam) flow regions under natural-state conditions. Vapor-dominated resetvoirs are characterized by the predominance of such regions (and occasionally dry steam zones), but even liquid-dominated reservoirs frequently contain two-phase regions which overlie part or all of the liquid filled volume below. Production-induced reservoir pressure decline will cause the two-phage flow region to grow. Owing o compressibility effects, the response characteristics of two-phase regions and of liquid zones are very different. Consequently, it is important to properly understand the development and flow characteristics of reservoirs containing two-phase zones. The purpose of this paper is to study the conditions required for the development of a two- phase zone in a particular Japanese geothermal reservoir.

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

Copyright 1989, 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.