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Record W2312541509 · doi:10.3720/japt.76.114

Endeavor at searching for methane hydrate resources in Japan

2011· article· en· W2312541509 on OpenAlexaboutno aff
Shoichi Tanaka

Bibliographic record

VenueJournal of the Japanese Association for Petroleum Technology · 2011
Typearticle
Languageen
FieldEnvironmental Science
TopicMethane Hydrates and Related Phenomena
Canadian institutionsnot available
FundersMinistry of Economy, Trade and Industry
KeywordsMethaneHydrateClathrate hydrateNatural gasCore sampleGeologyEnvironmental sciencePetroleum engineeringMineralogyCore (optical fiber)Materials scienceChemistryWaste managementEngineering

Abstract

fetched live from OpenAlex

Ministry of Economy, Trade and Industry (METI) published “Japan's Methane Hydrate R&D Program” in July, 2001. The Research Consortium for Methane Hydrate Resources in Japan was established in March, 2002, to carry out the Program. Phase 1 of the Program finished successfully in March, 2009, and was changed over to second phase.In Eastern Nankai Trough area, methane hydrate in pore-filling type was found in 1999. Features of methane hydrat formations were emerged by the METI Exploratory test wells in 2004. Concentrated zones of methane hydrate were found in turbidite sand layers. A lot of core samples containing hydrate were recovered with pressure-temperature core sampler (PTCS). A method of extraction of the concentrated zones of methane hydrate from seismic data was obtained by analysis of wire-line, core, and seismic data.Estimation of in-place of methane gas in hydrate formation in Eastern Nankai Trough area was carried out using a volumetric method through probabilistic approach. The total in-place of methane gas in the area amounted to about 1 trillion m3 as a mean value.High-pressure - low-temperature laboratories were established to investigate properties of natural and synthetic core samples of methane hydrate formations and carry out production tests using these core samples under in-situ environmental conditions. A numerical simulator “MH21-HYDRES” was developed for predicting methane gas production from hydrate formations.Methane production tests at hydrate formations were carried out twice in the Mackenzie Delta in Canada with international collaboration. In the second test in March, 2008, gas was produced continuously for 6 days with depressurization method from a perforation interval of 12 m in the hydrate formation. A cumulative gas production of the test amounted to about 13,000 m3. The test was interrupted under an agreement of the test period.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.002
metaresearch head score (Gemma)0.001
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.473
Threshold uncertainty score0.368

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0020.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.015
GPT teacher head0.229
Teacher spread0.215 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

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Citations0
Published2011
Admission routes1
Has abstractyes

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