Novel Integration of Seismic Attributes and Geochemical Ratios in Hydrocarbon Exploration

Hydrocarbon exploration has traditionally relied on geophysical surveys such as seismic reflection to map subsurface structures and delineate potential traps. Although seismic imaging provides high spatial resolution of trap and reservoir geometry, it offers limited insight into hydrocarbon charge or fluid type. Near-surface geochemical techniques detect upward-migrated hydrocarbons and therefore provide complementary information about the presence and maturity of petroleum systems. This paper explores how integrating geophysical and geochemical datasets can reduce exploration risk and improve the prediction of hydrocarbon accumulations. A synthetic case study demonstrates a workflow that combines soil-gas measurements and seismic attributes such as amplitude anomalies with geochemical attributes including C۱/C۲ and C۱/C۳ gas ratios. Statistical correlations and crossplots are used to interpret the data, while maps illustrate the spatial distribution of anomalies. The results highlight how geochemical anomalies correlate with structural features such as faults and how ratio plots help discriminate between oil- and gas-prone zones. Integrating these complementary datasets provides a more robust assessment of reservoir potential than either dataset alone, mirroring outcomes reported in recent integrated exploration studies.

کلیدواژه ها:

seismic ، Integrated exploration ، Geochemistry ، Hydrocarbon phase prediction ، Reservoir geochemistry