298-1 High-Resolution Permeability Characterization of the Lockport Dolomite Using Minipermeameter Measurements

Session: Joint SGD-SEPM-IAS Focus on Sedimentary Geology and Energy Transitions (Posters)

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Abstract:

Geological carbon sequestration is a key strategy for mitigating CO₂ emissions and supporting the transition to low-carbon energy systems. The Lockport Dolomite in Wayne County, West Virginia, has been evaluated for its potential as a CO₂ storage reservoir using core samples from well API #4709901549. This study integrates core-scale permeability measurements, facies analysis, and geostatistical modeling to assess the permeability heterogeneity of the formation and how it affects CO₂ injectivity and storage.

Four (4) distinct facies associations were identified, each exhibiting statistically significant permeability variations. Sedimentary and diagenetic features, particularly horizontal fractures were found to enhance permeability and promote lateral fluid flow. A high-permeability interval (sweet spot) was observed between depths of 3420 ft and 3460 ft, indicating a potentially favorable zone for CO₂ injection and movement.

Geostatistical analysis, including coefficient of variation (Cv) and exponential variogram modeling, revealed vertical heterogeneity driven by sedimentary and diagenetic processes. However, permeability values remained relatively consistent within 80 ft vertical intervals, suggesting semi-uniform flow behavior at localized scales.

These findings show structure-controlled flow pathways in the Lockport Dolomite. By linking permeability variability to stratigraphic, sedimentary and diagenetic features, this study provides insights essential for optimizing CO₂ injectivity, containment, and long-term storage in carbonate reservoirs.

Geological Society of America Abstracts with Program. Vol. 57, No. 6, 2025

doi: 10.1130/abs/2025AM-6794

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