To provide an underground permeation monitoring method for carbon dioxide for monitoring behavior of the pressed-in carbon dioxide in the ground.
This underground permeation monitoring method for the carbon dioxide is applied in a production system of hydrocarbon-based gas, for fixing the carbon dioxide for recovering the hydrocarbon-based gas mainly composed of methane gas discharged by being substituted with the carbon dioxide from a production well 4, after being fixed to coal in a lower layer 2 by pressing in carbon dioxide gas from a press-in well 3 communicating with the lower layer 2 among a plurality of these hole wells, by arranging the plurality of hole wells communicating with an underground coal layer (a permanent layer 1 and the lower layer 2). A detector of a radiation strength meter ( ray spectrometer) is arranged in a bottom part in an observation hole bored at five points A, B, C, D and E at an interval. The behavior in the ground of the pressed-in carbon dioxide, that is, an underground permeation state of the carbon dioxide and a production state of underground gas caused by this state, can be monitored by investigating a change with the lapse of time of ray strength by the radiation strength meter, simultaneously when pressing the carbon dioxide gas in the press-in well 3.
KOMAKI HIRONOBU
FUJITA MASAHITO
YAMAMOTO SHIGEO
NISHIMURA SUSUMU
KATSURA IKUO
NPO THINK TANK KYOTO INST OF N
Higashio Masahiro
Torii Kazuhisa
Next Patent: WOODEN COMPOSITE FLOOR MATERIAL AND METHOD OF MANUFACTURING THE SAME