Methane-hydrate Occurrence and Saturation Confirmed from Core Samples, Eastern Nankai Trough, Japan

2009 ◽  
pp. 385-400 ◽  
Keyword(s):  
Methane Hydrate ◽  
Nankai Trough ◽  
Core Samples

Integrated Facies Modeling Workflow for Methane Hydrate Reservoir along the eastern Nankai Trough, Japan

2011 ◽  
Author(s):  
Than Tin Aung ◽  
Satoshi Noguchi ◽  
Nobutaka Oikawa ◽  
Takayuki Kanno ◽  
Machiko Tamaki ◽  
...  
Keyword(s):  
Methane Hydrate ◽  
Nankai Trough ◽  
Facies Modeling ◽  
Hydrate Reservoir

Gas recovery enhancement from methane hydrate reservoir in the Nankai Trough using vertical wells

Energy ◽  
2019 ◽  
Vol 166 ◽  
pp. 834-844 ◽  
Author(s):  
Tao Yu ◽  
Guoqing Guan ◽  
Abuliti Abudula ◽  
Akihiro Yoshida ◽  
Dayong Wang ◽  
...  
Keyword(s):  
Methane Hydrate ◽  
Nankai Trough ◽  
Vertical Wells ◽  
Gas Recovery ◽  
Hydrate Reservoir

Heat-assisted production strategy for oceanic methane hydrate development in the Nankai Trough, Japan

2019 ◽  
Vol 174 ◽  
pp. 649-662 ◽  
Author(s):  
Tao Yu ◽  
Guoqing Guan ◽  
Abuliti Abudula ◽  
Akihiro Yoshida ◽  
Dayong Wang ◽  
...  
Keyword(s):  
Methane Hydrate ◽  
Nankai Trough ◽  
Production Strategy

scholarly journals Construction of 3 dimensional methane hydrate reservoir model in Eastern Nankai Trough and prediction of production test performance

2010 ◽  
Vol 75 (1) ◽  
pp. 72-83 ◽  
Author(s):  
Hisanao Ouchi ◽  
Masanori Kurihara ◽  
Akihiko Sato ◽  
Yoshihiro Masuda ◽  
Hideo Narita ◽  
...  
Keyword(s):  
Test Performance ◽  
Methane Hydrate ◽  
Nankai Trough ◽  
Production Test ◽  
Reservoir Model ◽  
3 Dimensional ◽  
Hydrate Reservoir

Effect of Drill-Ship Motions on Core Sample Conditions During the Nankai Trough Seismogenic Zone Experiment

2009 ◽  
Author(s):  
Yuichi Shinmoto ◽  
Kazuyasu Wada
Keyword(s):  
Deep Sea ◽  
Nankai Trough ◽  
Drill String ◽  
Seismogenic Zone ◽  
Ship Motions ◽  
Scientific Drilling ◽  
Core Samples ◽  
Core Recovery ◽  
Drilling Parameters ◽  
Core Conditions

The Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) Stage 1A, which is a part of the Integrated Ocean Drilling Program (IODP), is a series of expeditions in scientific drilling and coring operations aboard the first riser-equipped deep sea drilling vessel, Chikyu. The objectives are to recover good quality core samples and collect data on undersea properties and drilling conditions, which will also provide valuable information for future expeditions. The coring operations were carried out under harsh drilling and ocean conditions so that core recovery was inconsistent and fluctuated from high to low. Moreover, differences in independent lithology, depth, and the type of coring tools from previous expeditions made it necessary to analyze and optimize drilling parameters with new data. A serious concern in retrieving core samples was the vertical heave motions caused by the drill-ship since the active heave compensator system could not be activated before operations due to the extreme deep sea conditions and only the passive heave compensator was used. The drill string and coring tools are particularly vulnerable to the high heaving movements of the vessel so that the core recovery rate and quality are also adversely affected. The present work presents an analysis of geotechnical information, drilling parameters and the drill-ship motions the NanTroSEIZE expedition in order to optimize core conditions and maintain high core recovery.

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