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Modeling of ECBM recovery from Amasra coalbed in Zonguldak Basin, Turkey

Sınayuç, Çağlar
Guemrah, Fevzi
Zonguldak coal basin is the only productive hard coal basin of Turkey. The eastern part of the basin is called as Bartin-Amasra District, which has deeper coal seams. The depth and difficulty of mining these coal seams make this district an important candidate for coalbed methane (CBM) recovery. However, there is not enough reservoir data for modeling purposes. In this study, the lithologic information collected for coal mining industry was used to determine the correlations and the continuity of the coal seams. The lithologic information was examined and the depths of the coal seams and the locations of the exploration boreholes were used to perform a reliable correlation using a new method. As a result of the correlation study, 63 continuous coal layers were found. A statistical reserve estimation of each coal layer for methane was made by using Monte Carlo simulation method. The initial methane in place found in the coal layers both in free and adsorbed states were estimated using probabilistic simulations resulted in possible reserve (P10) of 2.07 billion m(3), probable reserve (P50) of 1.35 billion m(3) and proven reserves (P90) of 0.86 billion m(3).