| Hydraulic Characteristic of the Fractured Heat Exchange Region in the Subsurface System for Extracting Energy Directly from Magma |
Hayashi, Kazuo; Okitsuka, Ryohei |
HDR/EGS; Magma energy |
EGS Theoretical Studies; Magma Energy Extraction; Solidified Magma; Thermal Stress; Hydraulic Property; Thermally Induced Fractures |
Geothermal Resources Council Transactions |
2004 |
English |
| A Study on Dynamics of Cracks in Three Dimensions for Estimating Reservoir Cracks in EGS |
Hayashi, Kazuo; Onodera, Shinya |
HDR/EGS; characterization; fracture |
Enhanced Geothermal Systems; EGS, HDR, HWR, characterization, fracture |
Geothermal Resources Council Transactions |
2006 |
English |
| Morphology of a Reservoir Crack in a Rock Mass with Orthotropy in Fracture Toughness |
Hayashi, Kazuo; Sakurai, Izumi |
Fractures; Rock mechanics; Computer modeling |
Reservoir Engineering; Reservoir Parameters; Hot Dry Rock; Growth Path; Compressive Stress; Natural Fractures; Numerical Simulators; Reservoir Parameters |
Geothermal Resources Council Transactions |
1986 |
English |
| On Reliability of Stress Determined by Hydraulic Fracturing Stress Measurement using Transverse Fractures |
Hayashi, Kazuo; Sato, Akira; Ito, Takatoshi |
HDR/EGS; Hydraulic fracturing; Reservoir modeling; Fractures |
Enhanced Geothermal Systems; stress, fracture orientation, EGS, HDR |
Geothermal Resources Council Transactions |
2007 |
English |
| Dynamic Response of Fluid Inside A Penny Shaped Crack |
Hayashi, Kazuo; Seki, Hitoshi |
Exploration; Fractures; Fluid dynamics; Computer modeling; H |
Exploration; Reservoir Engineering; Hot Dry Rock; Earthquakes; Hydraulic Fracturing; Reservoir; Fracture Flow; Microearthquake; Stimulation; Permeability; Active Acoustics; Reservoir Size |
Geothermal Resources Council Transactions |
1997 |
English |
| A New In-Situ Tectonic Stress Measurements and its Application to a Geothermal Model Field |
Hayashi, Kazuo; Shoji, Tetsuo; Niitsuma, Hiroaki; Ito, Takatoshi; Abe, Hiroyuki |
Tectonics; Hydraulic fracturing |
Reservoir Engineering; Japan; Hachimantai; Hydraulic Fracturing |
Geothermal Resources Council Transactions |
1985 |
English |
| Evaluation of Hydraulic Properties of the Artificial Subsurface System in Higashihachimantai Geothermal Model Field |
Hayashi, Ko and Abe, H. |
Hydraulic Fracturing and Drilling |
— |
Japan International Geothermal Symposium |
1988 |
English |
| Quaternary Volcanism as the Heat Source for Some Geothermal Fields in Kyushu, Japan |
Hayashi, M. |
Others |
— |
Japan International Geothermal Symposium |
1988 |
English |
| Quaternary Volcanism as the Heat Source for Some Geothermal Fields in Kyushu, Japan |
Hayashi, M. |
Others |
— |
Japan International Geothermal Symposium |
1988 |
English |
| Activity Index and Thermal History of Geothermal Systems |
Hayashi, M.; Taguchi, S.; Yamasaki, T. |
Exploration; Fluid inclusions; Temperature gradients |
Japan; Kyushu; Kirishima; Exploration; Temperature; Assessment; Fluid Inclusions; Fission Tracks |
Geothermal Resources Council Transactions |
1981 |
English |
| Estimation of Magma Temperature Using Zircon Morphology |
Hayashi, Masao |
Exploration; Geological surveys; Geothermometers; Mineralogy |
Exploration; Magma; Heat Source; Volcanics; Geothermometer; Igneous; Otake; Hatchobaru; Japan; Zircon Morphology |
Geothermal Resources Council Transactions |
1990 |
English |
| Stress Fields of a Fractured-Type Reservoir |
Hayashi, Masao; Furutani, Naoyuki |
Exploration; Tectonics; Faults |
Exploration; Japan; Kyushu; Otake; Fault; Fracture; Volcanics; Fission Track; Veins; Stratigraphy |
Geothermal Resources Council Transactions |
1984 |
English |
| Strike-Dip Determination of Fractures in Drillcores by an Astatic-Magnetometer |
Hayashi, Masao; Furutani, Naoyuki |
Exploration; Fractures; Core sampling; Hydrothermal alterati |
Exploration; Japan; Fukuoka; Geologic Map; Hot Springs; Silica; Drillcores; Fault Zones |
Geothermal Resources Council Transactions |
1982 |
English |
| Geological Setting of Reinjection Wells in the Otake and the Hatchobaru Geothermal Field, Japan |
Hayashi, Masao; Mimura, Toshimitsu; Yamasaki, Tatsuo |
Injection; Geological surveys; Tracer testing |
Reservoir Engineering; Power Generation; Japan; Otake; Hatchobaru; Reinjection; Permeability; Tracers; Mineralogy |
Geothermal Resources Council Transactions |
1978 |
English |
| Fracture Analysis at the Kirishima Geothermal Field, Southern Kyushu, Japan |
Hayashi, Masao; Takagi, Hiroshi |
Exploration; Geological surveys; Fractures; Tectonics |
Exploration; Japan; Kirishima; Geology; Fractures |
Geothermal Resources Council Transactions |
1983 |
English |
| Hard Rock Geomechanical and Petrophysical Properties from Drilling Data |
Hayes, John; Tahmeen, Mazeda; Hareland, Geir; Al Dushaishi, Mohammed |
Drilling; Geomechanics; Equipment design |
Geothermal drilling, hard rock ROP model, geomechanical and petrophysical properties, unconfined rock strength, apparent rock strength, Poisson’s ratio, permeability, porosity |
Geothermal Resources Council Transactions |
2023 |
English |
| Geothermal Explorations and Investigations by MTA in Turkey |
Hayrullah DAGISTAN, Ismail KARA, Bulent PEKER, Oktay CELMEN, Macit KARADAGLAR |
Exploration |
geothermal, exploration, investigation, MTA, Turkey |
World Geothermal Congress |
2015 |
English |
| Geothermal Explorations and Investigations by MTA in Turkey |
Hayrullah Dagistan, Nilgun Dogdu, Macit Karadaglar |
11. Exploration |
Geothermal Exploration, Turkey, Geothermal Potential, MTA |
World Geothermal Congress |
2010 |
English |
| Geological and Hydrogeological Investigation of Kozluk-Taslidere (Batman) Geothermal Field |
Hayrullah Dagistan, Sakir Simsek |
19. Hydrogeology |
Hydrogeology, geothermal field, Taslidere, Kozluk, Batman, SE Turkey |
World Geothermal Congress |
2005 |
English |
| New Developments and Investment Opportunities of Geothermal Sources in Turkey |
Hayrullah Dagýstan |
— |
— |
GeoFund Workshop |
2009 |
English |