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The AAPG/Datapages Combined Publications Database
AAPG Bulletin
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In July and August 1978, two holes were drilled in the Raton basin 12 mi (19 km) southeast of Trinidad, Colorado, for measuring methane gas in coal beds. The sites are near the Morley mine, where the presence of abundant methane gas had been reported during mining operations.
The principal objective was the Morley coal, located just above the Trinidad Sandstone. The geology, drilling procedures, coal beds encountered, tests for gas, and experience gained are described. The amount of methane, although lower than expected, is consistent with the correlation of coal rank to gas yield. The coal is classed as high volatile A; the ratio of fixed carbon to volatile matter is 1.69.
Strong shows of methane are known in other parts of the basin where thicker, more consistent coal sections of higher rank occur. Such localities will most likely prove the importance of the region for methane gas production by future exploration and drilling.
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