Strengthening Petrophysical Interpretation in the Birkhead Formation through an Integrated Petrophysics-Rock Physics Workflow

This study encounters several challenges during petrophysical interpretation, including: 1) inconsistency in sonic data resulting from dipole or monopole measurement; 2) variations in data quality and inconsistencies between different contractors; 3) inconsistencies in data resolution across elastic logs (e.g., density vs. velocity); and 4) facies misclassification during petrophysical evaluation. To overcome these challenges, integrated seismic petrophysics and rock physics workflow is required to strengthen and constraint the petrophysical interpretation. This workflow involves log conditioning (LC), seismic petrophysics (SPP), and rock physics modeling (RPM), which requires multiple iterations. Seismic petrophysics addresses the limitations of conventional approaches, which typically limit calibration to the reservoir and my introduce inaccuracies in the surrounding non-reservoir sections. The result delivers a reliable and consistent rock physics interpretation with correctly represents the elastic responses. This study extends a previously published integrated workflow applied to the Birkhead Formation ( Cunha et. al., 2024 ), narrowing the focus to the integrated seismic petrophysics and rock physics modeling components.