Abstracts

• 11674 Bright Spots, Dim Spots: geologic controls of rock properties and AvO response in the Niger Delta basin Direct Hydrocarbon Indicator (DHI) support for hydrocarbons in the Niger Delta has been recognized for several decades. This paper presents an overview of key controlling factors that impact seismic response and cause rapid transition from bright spots to dim spots, and the transition from amplitude to AvO anomalies. Many clastic Tertiary basins globally follow similar stratigraphic and diagenetic evolution, thus the Niger Delta example may be a good analogue for subtle DHI plays elsewhere. Bright Spots, Dim Spots: geologic controls of rock properties and AvO response in the Niger Delta basin
  Bright Spots, Dim Spots: geologic controls of rock properties and AvO response in the Niger Delta basin
• 11673 Exploration Risking and Impact of Direct Hydrocarbon Indicators: Application of scenario-based AvO classification technology Seismic amplitude anomalies have been used for over 40 years to identify and de-risk exploration opportunities with a great degree of success. Beginning in the late 90s, the global industry portfolio of solid amplitude-supported opportunities started to get depleted in many basins. The depletion of high-confidence opportunities resulted in drilling of intrinsically riskier amplitude anomalies leading to significant exploration failures and unexpected outcomes. This paper presents several examples of volume and scenario-based DHI assessment workflows from selected Circum-Atlantic basins, with discussion of underpinning rock properties systems and lessons learned from drilling results. Exploration Risking and Impact of Direct Hydrocarbon Indicators: Application of scenario-based AvO classification technology
  Exploration Risking and Impact of Direct Hydrocarbon Indicators: Application of scenario-based AvO classification technology