Vapor-Dominated Geothermal Resources: (3) Phenomena Associated with Long-Term Steam Production and Remaining Questions

Abstract

Vapor-dominated geothermal resources were the first to be utilized for geothermal power generation. However, since there are few examples, its characteristics, actual conditions and issues are not well known to the general public. This review intends to provide an overview of the current understanding of the vapordominated geothermal resources, the phenomena that have occurred during steam production, the responses to these phenomena, and the issues that remain unresolved. This review is divided into three parts. In the third part, we will review, phenomena related to long-term steam production and remaining questions on the vapordominated geothermal resources.