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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThis paper covers the optimization of hydraulic fracture treatments in a new coalbed methane reservoir in Wyoming. A multi-well pilot project was conducted in the Copper Ridge field to assess future development potential. Hydraulic fracture mapping was successfully performed with treatment well tiltmeters on six wells including the first-ever use on propped treatments. The mapped fracture height was then used to calibrate the fracture model, perform on-site frac design changes and optimize future fracture treatments. This paper shows how early use of fracture diagnostics can assist in the development of a new reservoir.