Reservoir Fluids International

PVT Analysis

Routine PVT Analysis
A full range of PVT and fluid property measurements are available on black oil, volatile oil and gas condensate reservoir fluids. Routine laboratory capabilities provide a maximum working limit of 700 bar and 160°C.

HP/HT PVT Analysis
High pressure / high temperature PVT analysis is provided up to a maximum working limit of 1200 bar and 200°C using a large volume cell. Measurements can also be performed on very lean gas samples down to a minimum of -20°C.

Enhanced Oil Recovery (EOR) Studies
Solubility swelling, multi-contact and gas revaporization studies are performed to evaluate phase behavior and fluid compositions. Slim-tube measurements of minimum miscibility pressure (MMP) and minimum composition miscibility (MCM) define critical fluid mixture properties.

Asphaltene Deposition Evaluation
Specialized measurements are made on the extent of asphaltene flocculation at both reservoir and production conditions. Additional measurements can be performed to evaluate the effects of gas injection and the compatibility of various fluid streams.

Wax Deposition Evaluation
This evaluation provides an accurate determination of the wax appearance temperature of produced fluids from reservoir through to stock tank conditions. It allows determination of pipeline restart measurement, gel strength calculations and chemical inhibitor evaluation.

EOS Fluid Characterization
PVT properties can be theoretically simulated from an accurate reservoir fluid composition. The data can be improved by regression to a limited set of measured laboratory data – such as saturation pressure, gas-oil ratio, etc. The package is a useful tool to quickly predict PVT properties on open-hole or on mud-contaminated samples.

Sample Management
This complete sample management service includes sample storage and cylinder maintenance packages to provide a cost-efficient service. Sample details are logged and tracked on a database and can be reviewed electronically in a spreadsheet format.

Fluids Analytical Chemistry

Water Analysis Exploration and production water samples are routinely analyzed for API 12 ion composition, together with residual inhibitor, organic acids and tracer concentrations. Exploration waters are analyzed to determine a formation water composition, which is used in scale prediction and corrosion models. Routine produced waters are analyzed to determine the extent of contamination and scaling, and to assist in chemical squeeze programming.

Scale/Deposit Analysis Samples of deposits from downhole production systems and pipelines are analyzed using sophisticated techniques including ICPAES, GC, SEM, EDX, XRD, FTIR and traditional wet chemistry. These results are used to determine composition, possible remedial treatments and control measures required to optimize production.
Hydrocarbon Sample Analysis Samples of crude oil and distillation fractions are analyzed to determine a variety of physical and chemical properties which affect the value and treatment of the oil. The tests are normally performed according to industry recognized IP, ASTM and UOP procedures.
Physical Compatibility Studies Studies involving wax deposition, asphaltene flocculation, water and emulsion stability are performed to evaluate the compatibility of various mixtures.
Chemical Evaluation Studies Studies involving wax inhibitors, asphaltene inhibitors, scale inhibitors and dissolvers, demulsifiers, biocides and pour point depressants are performed to determine the most efficient chemical and optimum concentration.

Compositional Analysis

Gas Analysis Chromatographic analysis of hydrocarbon gas samples is provided up to C15+, including CO2, N2, and H2S. Analysis is performed to recognized GPA 2286, IP 345 and ASTM D1945 methodologies. Special in-house techniques determine trace levels of hydrogen and helium.
Oil Analysis This analysis of pressurized oils, condensates and stock tank oils up to C36+ uses cold, on-column "sandwich" injection and high-resolution capillary gas chromatography techniques. Accurate quantification is achieved by use of an internal standard.
PNA Distributions Paraffin, naphthenes and aromatic distribution measurements are acquired on residual liquid or distillate cuts from C1 to C10 using narrow bore capillary chromatography techniques.
High Temperature Fractional Distillation Determination of boiling range distribution and cut-point yield analysis is provided for stock tank oils and condensates up to 575°C by ASTM D2892 and D1160 methodologies. Analysis can be performed to a series of specified temperature ranges or to carbon number boiling points.
Fingerprint Analysis High-resolution capillary chromatography is performed using a modified IP 318 Method to evaluate for sample contamination. The technique is primarily used to determine oil-based mud contamination in open hole samples, but is also used to check for glycols, lubricants and other refined products.
Reservoir Continuity Application of reservoir fluid geochemistry defines vertical and lateral reservoir continuity and compartmentalization. This allows attribute production allocation in commingled or multi-zoned intervals, investigation of leakage in commingled zones and testing for drilling fluid contamination.