Methane Production Characteristics for a Deeply Buried Coalbed Reservoir in the San Juan Basin

ABSTRACT In cooperation with Tiffany Gas Company, Terra Tek cored the Fruitland Formation coal, lying at approximately 3100 feet, in the Glover Well #1 drilled in the southeast quarter of Section 2, T32N, R6W, Archuleta County, Colorado, within the northern portion of the San Juan Basin. The coal was fully water saturated. Laboratory tests were performed on the recovered cores and reservoir engineering tests within the coal before and after underreaming. Production data indicates the need to treat the coal with a deeply penetrating fracture to achieve acceptable gas production. However, coal fines migration is a serious problem to maintaining high production.