PVT And Mud Gas Analysis

Pressure Volume Temperature (PVT) Analysis

RESERVOIR FLUID BEHAVIOR & PROPERTIES

PVT SERVICES

Field sampling and wellsite services
Sample transfer, validation and restoration
PVT tests up to 20,000 psi and 400 degrees
Reservoir fluid phase identification
Surface separator fluid recombination
Constant Composition Expansion (CCE)
Differential Liberation (DL)
Constant Volume Depletion (CVD)
Multi-stage separator test
Pressurized and Stock Tank fluid viscosities
EOR – Minimum Miscibility (Slim Tube), Swelling and Multi- contact (reverse and forward)
Flow Assurance - Asphaltenes and Waxes
Long-term pressurized sample storage
Working pressure maps
PVT Cylinder Storage (Short and Long term)

GeoMark Research’s established PVT laboratory has been serving the industry for over 15 years, providing critical subsurface fluid insights for our global customers:

Fluid Phase Prediction: Predict when in-situ fluids will hydrocarbon insights)transition to multiple phases (bubble point and recoverable
Well Interactions: Evaluate how parent-child relationships are affecting PVT behavior
Reservoir Continuity & Communication: Pressure assessment to identify reservoir communication
Production Management: Fluid property assessment for choke management and production infrastructure optimization

The GeoMark Advantage

Our specialists combine engineering and geochemical analyses
to effectively expand our understanding of reservoir fluids.
With the integration of PVT and Geochemistry, we can evaluate
reservoir continuity between wells. Oils in compartmentalized
reservoirs usually differ in molecular composition caused by
biodegradation, multiple charge history etc., and can explain
the differences in fluid properties. The variations in composition
can be identified using high resolution whole crude Gas
Chromatography (GC) which separates the many molecular
components in petroleum. The resulting “fingerprints” from each
zone are compared visually and with more complex multivariate
statistical techniques to determine the similarities and
differences between samples.

Mud Gas Isotopes

GEOCHEMICAL CHARACTERIZATION

GeoMark Research’s established Mud Gas Isotope laboratory has been serving the industry for over 15 years, providing timely and trusted gas analysis data from exploration and production wells around the world. Our data provides insights to the following:

Gas Compositions: Cost effective screening technique to quickly identify hydrocarbon bearing zones
Gas Classification (Biogenic vs. Thermogenic): Helps determine the source of gas encountered within a well
Maturity and Mixing: Evaluates delivery of gas source maturity and relative mixing between thermogenic and bacterial (insights to migration)
Wetness: Identifies dry gas, condensate, or oil throughout the well
Connectivity: Assesses if reservoirs are connected or sourced from the same source
Helium: Exploration of alternative natural resources

The figures below present a selection of data outputs and interpretations that can be made from Mud Gas Isotope Analysis. Stable gas isotopic data (methane, ethane, propane and higher molecules) have traditionally been used as geochemical source and maturity markers and to indicate the relative concentrations of biogenic and thermogenic components in reservoir fluids. Collected over multiple wells, this data can be used to evaluate continuity between different zones in single and multiple wells; connected reservoirs should have similar isotopic values.

MUD GAS ANALYSES

GC Compositions to C6+ including He, H2
GC-IRMS Methane (C1) Carbon Isotope Compositions
GC-IRMS Ethane (C2) Carbon Isotope Compositions
GC-IRMS Propane (C3) Carbon Isotope Compositions
Butane (normal & iso) Carbon Isotopes
Pentane (normal & iso) Carbon Isotopes
Deuterium Hydrogen Isotopes
CO2 Isotopes