| Abstract |
Concept of the deep-seated geothermal resources Deep-seated geothermal resources is defined as the depth of 3000-4000m at temperature of approximately 350o C. And it is considered that those deep-seated geothermal resources exist below shallow geothermal reservoirs which are already exploited. 580,000 KW. And it is indispensable to explore geothermal resources " to increase it rapidly. In Japan, the total power generation capacity is about 580,000 KW. And it is indispensable to explore "deep-seated geothermal resources " to increase it rapidly. Development of drilling technology for deep-seated geothermal resources There are many problems remained to drill "deep-seated geothermal reservoirs " safely and efficiently. We are developing a heat-resistant bit, drilling mud, and heat resistant cement slurry. |