Searching for "Sweet Spot" of Unayzah A Eolian Fairway in Basin Centre Area, Saudi Arabia

It is a common practice for prospect generator to map the structure of target horizon in the first run of prospect generation, however there are still a lot of hydrocarbon potential in non-structure trapping system in conventional and unconventional forms for prospect generator to explore. According to the regional geological study, the major geological features and conditions in Central Saudi Arabia are favorable for forming Basin Centre Gas. 3D seismic attribute mapping is a powerful tool for prospect generator to searching for “Sweet Spot” (relative high porosity and permeability reservoir body) which is an unconventional commercial hydrocarbon accumulation in Basin Centre Gas Accumulation area. Based on the Basin Centre Gas play concept, we focused our prospect generation to searching for “Sweet Spot” by using 3D seismic attribute mapping including amplitude, seismic acoustic impedance analysis. The seismic attribute mapping of Unayzah A reservoir reveal approximate 850 square kilometers of “Sweet Spot” stepping to the basin center area. The inverted seismic acoustic impedance of “Sweet Spot” can be correlated to the discovery wells.