PVT Analysis
Transforming Fluid Samples into Reservoir Intelligence
PVT analysis is more than measuring shrinkage, GOR, and phase behavior; it's about transforming fluid samples into strategic reservoir insight. With advanced PVT laboratories and decades of experience, GeoMark helps operators unravel the full story of their fluids, from reservoir characterization and connectivity to development planning and production optimization.
GeoMark Research's PVT analysis services help operators develop a deeper understanding of fluid behavior throughout the reservoir lifecycle. From exploration through production, we provide the high-resolution fluid property data needed to improve reservoir models, optimize recovery strategies, reduce uncertainty, and avoid costly surprises.
Integrated Reservoir Fluid Intelligence™
At GeoMark, PVT data is only part of the story. Through our Integrated Reservoir Fluid Intelligence™ (IRFI) approach, we combine PVT measurements with geochemistry, isotopes, and fluid fingerprinting to create a more complete understanding of reservoir behavior.
By integrating fluid composition, phase behavior, source affinity, thermal maturity, migration history, and production contributions, operators gain insights that cannot be achieved through PVT or geochemistry alone. The result is greater confidence in reservoir characterization, connectivity assessments, reserves evaluations, and development decisions.
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A Fully Customizable Toolbelt to Meet All Your PVT Needs
Compositional Analysis
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Full compositional breakdown of reservoir fluids (C1 to C30+, CO2, H2S, and N2)
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Extended gas chromatography for detailed fluid characterization
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Advanced hydrocarbon fingerprinting for fluid correlation and allocation
Phase Behavior Studies
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Constant Composition Expansion (CCE) experiments
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Differential Liberation (DL) tests for oil systems
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Constant Volume Depletion (CVD) tests for condensate systems
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Multi-stage separator tests to determine optimal production strategies
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Multi-stage flash liberation tests for accurate phase characterization
Fluid Property Determination
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Density, viscosity, and compressibility measurements at reservoir conditions
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Gas-oil ratio (GOR) and formation volume factor (Bo, Bg) evaluation
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Live fluid sampling and recombination for accurate in-situ measurements
Flow Assurance & Solid Deposition Analysis
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Wax appearance temperature (WAT) and wax precipitation studies
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Asphaltene onset pressure (AOP) and stability assessments
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Hydrate formation and inhibition testing to prevent flow restrictions
Enhanced Reservoir Connectivity & Continuity Studies
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Ultra-High-Resolution Gas Chromatography (UHRGC) for precise reservoir connectivity assessment
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Geochemical modeling to support well allocation and drainage strategies
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Integration with geophysical and petrophysical datasets for comprehensive reservoir understanding
From PVT to Geochemistry: A Complete Picture
GeoMark is uniquely positioned to integrate traditional PVT analysis with advanced geochemical characterization:
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Isotopes, Biomarkers, Molecular Ratios: Applied directly to PVT samples to reveal thermal maturity, migration pathways, source-rock affinity, and reservoir charge history.
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Production Allocation: Go beyond pressure and GOR measurements. Molecular fingerprints can distinguish fluid contributions from multiple zones, helping operators identify compartmentalization, commingling, and changing production sources.
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Reservoir Connectivity: In stacked or commingled reservoirs, integrated PVT and geochemical data can determine which intervals are contributing to production and which remain isolated, reducing uncertainty in reserves estimation, field development planning, and regulatory reporting.
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Predictive Reservoir Understanding: When PVT properties are evaluated alongside geochemical signatures, operators can better define fluid populations, improve analog selection, refine reservoir models, and forecast fluid behavior with greater confidence.
Through Integrated Reservoir Fluid Intelligence™, GeoMark combines PVT, oil geochemistry, mud gas, isotopes, and production allocation into a unified workflow that helps operators better understand reservoir behavior, reduce uncertainty, and maximize asset value.
Real-World Impact: Case Studies
Faulted reservoir?
GeoMark confirmed connectivity using isotopes, GC fingerprints, and pressure data—even with minor contamination.
Case 1
Case 2
No samples? No problem. GeoMark estimated GOR using pressure gradients and gas isotopes—empowering early development plans.
Case 3
Gas cap or separate accumulation?
Integrated data revealed a single reservoir, avoiding misclassification and development missteps.
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