Seismic reprocessing and AvO inversion of the Northern Fields 3D (Gippsland Basin)

Abstract

Geo-steering of the Longtom-3 and Longtom-4 development wells was based on an AvO inversion attribute that has, to date, proven reliable in highlighting thick, gas-filled sands. In-field and nearfield opportunities exist for adding upside to the Longtom field development, although attribute support has been hampered by coherent noise and resolution limitations. Reprocessing of the Northern Fields 3D within VIC/P54 was un dertaken with the specific objectives of reducing multiples and flattening gathers to improve upon and extend the existing AvO inversion dataset.