| Geological Framework and Natural Fracture Characteristics at the Ogachi Hot Dry Rock Site, Northeast Japan |
Ito, Hisatoshi; Kitano, Koichi |
Exploration; Geological surveys; Core sampling; Well logging |
Fracture Characterization |
Geothermal Resources Council Transactions |
1999 |
English |
| Detailed Natural Fracture and Stress Distribution Revealed by FMI and UBI Loggings in the Newly Drilled OGC-3 Well at Ogachi HDR Test Site, Japan |
Ito, Hisatoshi; Okabe, Takashi |
HDR/EGS - Field Studies; Natural Fracture; Stress |
Enhanced Geothermal Systems - Field Studies; Ogachi; Natural Fracture; Stress; FMI, UBI |
Geothermal Resources Council Transactions |
2001 |
English |
| Effect of Fluid Leakage at the Crack Tip on Dynamics of Penny-Shaped Fluid-Filled Crack |
Ito, Shin; Hayashi, Kazuo |
HDR/EGS; Fractures; Reservoir Crack; Microseismicity; Acoust |
Enhanced Geothermal Systems - Fractures; Hot Dry Rock; Geothermal Reservoir Crack; Microseismicity; Acoustic Emission |
Geothermal Resources Council Transactions |
2001 |
English |
| Fracture Characterization by Using Resonance of Penny-Shaped Fluid-Filled Crack Model in the Higashi-Hachimantai Field, Japan |
Ito, Shin; Hayashi, Kazuo; Asanuma, Hiroshi; Niitsuma, Hiroaki |
Reservoir Engineering; HDR/EGS; Geothermal Reservoir Crack; |
Reservoir Engineering; Hot Dry Rock; Geothermal Reservoir Crack; Reservoir Characterization; Dynamic Response; Inverse Problem |
Geothermal Resources Council Transactions |
2003 |
English |
| Fracture Characterization by using Resonance of Penny-Shaped Fluid-Filled Crack Model in Australian HDR Field -- Initial Results |
Ito, Shin; Hayashi, Kazuo; Kaieda, Hideshi; Aoyagi, Yasuhira |
HDR/EGS; Geothermal Reservoir Crack Model; Reservoir Charact |
EGS Field Applications; Hot Dry Rock; Geothermal Reservoir Crack Model; Reservoir Characterization; Dynamic Response; Inverse Problem |
Geothermal Resources Council Transactions |
2004 |
English |
| Fracture Characterization from Microseismic Events at Hijiori and Ogachi Fields in Japan |
Ito, Shin; Hayashi, Kazuo; Kaieda, Hideshi; Tezuka, Kazuhiko |
Reservoir modeling; Microseismicity; Fractures; Fluid dynami |
Fracture Characterization |
Geothermal Resources Council Transactions |
1999 |
English |
| Characterization of a Hydraulic Fracture in the Higashi-Hachimantai Geothermal Model Field, Japan, based on Fluid Dynamics |
Ito, Shin; Hayashi, Kazuo; Nagano, Koji |
Fractures; Reservoir modeling |
Geothermal; HDR; HWR; EGS; Air gun; Hydrophone; Guided wave; Hydraulic fracture; Fracture flow parameters; Japan |
Geothermal Resources Council Transactions |
2011 |
English |
| Elastic Waves Radiating from a Penny-Shaped Reservoir Crack |
Ito, Shin; Hayashi, Kazuo; Saito, Hiroyuki |
HDR/EGS; Radiation Pattern; Elastic Wave; Geothermal Reservo |
Enhanced Geothermal Systems Theoretical Studies; Radiation Pattern; Elastic Wave; Hot Dry Rock; Geothermal Reservoir Crack |
Geothermal Resources Council Transactions |
2002 |
English |
| A Study on Stress Controlling Flow Pathways in HDR/HWR Geothermal Reservoirs |
Ito, Takatoshi; Hayashi, Kazuo |
HDR/EGS; Stress fields; Hydrogeology; Fractures; Exploration |
Fracture Characterization |
Geothermal Resources Council Transactions |
1999 |
English |
| Characteristics of Shut-In Curves of Transverse Cracks in Hydraulic Fracturing Stress Measurements |
Ito, Takatoshi; Hayashi, Kazuo |
Hydraulic fracturing; Well testing; Pressure transient analy |
Reservoir Engineering; Pressure Declines; Decay; Water Loss; Modeling; Simulation |
Geothermal Resources Council Transactions |
1992 |
English |
| Determination of the Minimum Horizontal Principal Stress from Pressure Decay After Breakdown in Hydraulic Fracturing |
Ito, Takatoshi; Hayashi, Kazuo |
Stress fields; Hydraulic fracturing |
Reservoir Engineering; Japan; Pressure Decline; Reservoir Models; Injection Tests; Struddle Packers; Laboratory Testing |
Geothermal Resources Council Transactions |
1991 |
English |
| Measurement of In-Situ Hydraulic Properties from the Pulse Test for the Case of Unknown In-Situ Pore Pressure and its Application to HDR Model Fields |
Ito, Takatoshi; Hirose, Yukihiro; Hayashi, Kazuo |
Reservoir engineering; Well testing; Pulse testing |
Hot Dry Rock; Reservoir Engineering; Japan; Miyagi; Pore Pressure; Straddle Packer; Porosity; Reservoir Evaluation; Water Loss; Permeability; Fluid Flow; Slug Tests |
Geothermal Resources Council Transactions |
1994 |
English |
| Numerical Study on Optimum Injection Temperature Inferred from Coupled-Hydro-Thermal-Mechanical Behavior of Rock |
Ito, Takatoshi; Swenson, Daniel; Sekine, Kotaro; Hayashi, Kazuo |
Reservoir Engineering; Injection; Fracture |
Reservoir Engineering; Geothermal Wells; Re-injection; Injectivity; Thermal Stress; Fracture |
Geothermal Resources Council Transactions |
2003 |
English |
| Super-High-Temperature Geothermal Well Logging Tools (450°C) and Log Interpretation |
Itoh, Toshinobu; Miyairi, Makoto; Takeyama, Takao |
Well logging; High temperature reservoirs; Equipment design |
Reservoir Engineering; Logging; Lithology; Log Interpretation; Logging Cable; High Temperature Cable |
Geothermal Resources Council Transactions |
1985 |
English |
| Numerical Analysis of the Decrease in Injectivity of Wells in the Otake Geothermal Field, Japan |
Itoi, R., Fukuda, M., Jinno, K., and Tomita, T. |
Reinjection |
— |
New Zealand Geothermal Workshop |
1987 |
English |
| Numerical Simulation of Well Characteristics Coupled with Steady Radial Flow in a Geothermal Reservoir |
Itoi, R., Kakihara, Y., Fukuda, M. and Koga, A., |
Reservoir Engineering and Reinjection |
— |
Japan International Geothermal Symposium |
1988 |
English |
| Effects Of Low Temperature Water Inflow Into Wellbore At Shallow Feedzone Of Production Well On Steam-Water Two-Phase Flow In Well |
ITOI, Ryuichi ., INAGAKI, Haruhiro ., TABAKA, Toshiaki . and IWASAKI, Takaichi |
Geothermal Engineering - Production and Management |
Wellbore flow, unsteady state, numerical simulation. |
New Zealand Geothermal Workshop |
2014 |
English |
| The Application of Kalman Filter to Pressure Interference Test Analysis |
Itoi, Ryuichi; Arakawa, Hiroshi; Fukuda, Michihiro; Jinno, Kenji |
Well testing; Interference testing |
Reservoir Engineering; K; Permeability; Porosity; Pressure; Transmissivity; Flow Tests; Interference Testing; Pressure Transient Testing; Storativity; Analysis |
Geothermal Resources Council Transactions |
1990 |
English |
| Well Inlet Pressure and Steam Quality of Hatchobaru Production Wells |
Itoi, Ryuichi; Fukuda, Michihiro |
Two phase flow; Reservoir modeling; Fluid dynamics; Well tes |
Brine Technology; Japan; Injection Well; Phase Relations; Pressures; Flow Rates; Thermodynamics; Wellbores |
Geothermal Resources Council Transactions |
1982 |
English |
| A Presumption of Steam and Water Flow Characteristics Based on the Flow Conditions at the Well Inlet |
Itoi, Ryuichi; Fukuda, Michihiro |
Fluid dynamics; Two phase flow |
Japan; Fukuoka; Flow Rate; Phase Relationships |
Geothermal Resources Council Transactions |
1982 |
English |