Identifying Productive Fractures in the Narraway Gas Field Using the Envelope of Seismic Anisotropy

B029 IDENTIFYING PRODUCTIVE FRACTURES IN THE NARRAWAY GAS FIELD USING THE ENVELOPE OF SEISMIC ANISOTROPY Summary 1 This paper summarizes recent progress towards the goal of identifying productive vertically aligned fractures cracks or micro-cracks in gas reservoirs using surface seismic data. Our results demonstrate that identification and interpretation of fracture trends can be more accurate by exploiting a new seismic attribute the envelope of the anisotropic gradient in an integrated interpretation approach. The method was applied to the Narraway gas field located on the leading edge of the Foothills Disturbed Belt in Northwest Alberta where intersecting the fracture trends with