JCOP representing Japan's first CO2-ECBMR
field test has been designed to evaluate technical and economical
feasibility of extracting CH4 while storing CO2 in Japanese
coal seams. It aims to resolve global warming and to develop
the integrated system including separation and capture of
CO2 emitted from large-scale sources, injection and sequestration
of CO2 into coal seams, and recovery of enhanced CH4 that
has not been utilized.
( It is an image of practical use and
doesn't describe Preliminary Test. )
Principle
Coal contain a very fine micropore and methane
molecules adsorb to the micropore walls (matrix surface).Coal
has a more than 2 :1 sorption selectivity for CO2 over CH4.
JCOP has been in operation since JFY2002 with
full subsidy from Ministry of Economy, Trade and Industry.
R&D Contents
Fundamental Phase consisting of laboratory
experiment and preliminary test has been designed to investigate
technical and economical feasibility of CO2 sequestration
in coal seams.
Laboratory Works
Mechanism of CH4
displacement with CO2
Hokkaido University
Simulation of CO2 behavior
in coal seams
Akita University
CO2 absorption characteristics
Kyoto University
Swelling and shrinkage reactions of coal seams caused
by CO2 injection
RITE
Potentiality of CO2 sequestration
in coal seams
Waseda University
Preliminary Test
Micro Pilot test
Japan Coal Energy Center
Monitoring Technology
Nonprofit Organization Thinktank Kyoto Institute of
Natural History
Improvement of CO2 Separating
and Capturing
The Kansai Electric Power Co., Inc. Mitsubishi Heavy
Industries, Ltd.
Economic Evaluation
General Environmental Technos Co., Ltd
Schedule
Laboratory Works
● Estimates calculated by the Markham-Benton
equation are very much in agreement with the results of
displacement and
● Adsorption capacities for CO2 and CH4 were measured. In
addition, the optimum conditions for CO2 sequestration in
coal were determined.
● The numerical model to simulate CO2-ECBM performace has
been developed.
Preliminary Test
Japan's first CO2-ECBMR field test using
two well bores (injection well and observation well) has
been taken place in Ishikari coalfield. The optimum monitoring
technology to verify safety and environmental impact was
one of the objectives for the project.
● Reservoir properties and coal characterization
were obtained by core sampling and welltest.
● Long term CO2 injection and CBM production were undertaken
to obtain the fundamental data for CO2 sequestration /CH4
displacement.
● Well matching between measured gas production and simulated
production was achieved by the historical matching. It was
confirmed that CBM was enhanced by CO2 injection.
Monitoring Technology
● No leakage of the injected CO2 was confirmed
by environmental monitoring system including soil gas, groundwater,
radiation ray measurements and so on.
Economic Evaluation
The total system including CO2 separation and
capture, transportation, boring and injection, and CH4 recovery
was researched and assessed in terms of safety and economical
performance.
Inquiry
CO2 Geosequestration in Coal Seams Project
(JCOP)
E-Mail: co2@kanso.co.jp
問い合わせ先 環境部 地球環境グループ
TEL 06-6263-7378 FAX 06-6263-7321
