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InvasionProfiler™ Core Invasion Tracers |
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Quantify Filtrate Invasion
Introduced into any mud system—oil, water or synthetic—Invasion Profiler tracers
allow reservoir engineers, geologists and petrophysicists to very accurately quantify
the amount of filtrate invasion in core and fluid samples. These unique measurements
have a significant affect on reservoir models. Because reserve estimation as well
as reservoir simulation and production facility
design depend on model accuracy, precise fluid invasion
measurements are critical to success.
Core evaluation—In situ fluid saturation (Vfm) is determined with
much greater accuracy.
Alteration of formation Sw by drilling mud filtrate (Vflt) can be
quantified
Reserve determination is also affected by water resistivity (Rw). Invasion Profiler
analysis quantifies fluid invasion that can
increase or dilute salinity.
Using Core Lab proprietary methods, clay-bound water (Vcbw)
can also be ascertained
In addition, filtrate invasion data enhances confidence in
fresh-state relative permeability calculations for more accurate
reserve certification.
Enhanced evaluation
Detailed reports and calibrated fluid saturations enhance data integration and formation
evaluation. The Invasion Profiler LogTM allows you to see the saturation profile
in a graphical log plot format.
Invasion Profiler tracer services are an environmentally-friendly process for both
water-based and oil-based mud systems.
Tritium is commonly used to trace waterbased systems; a proprietary
oil-soluble tracer is used in oil-based systems.
Tracer Specifications
- High tracer stability –no temperature limits
- Not naturally occurring
- Meets all industry HSE standards
- Very low quantities required
- Perfect emulator of the fluid medium
- No interference with open-hole logging
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Fluid sample validation
Quantifying oil-base mud filtrate contamination in
formation tests of bottomhole fluid samples contributes to a more reliable reservoir
simulation and better production facility design. The degree of filtrate invasion
is critical to determining crude oil parameters such as GOR, Bo, Psat and asphaltene
content. Invasion Profiler analysis is the most reliable way of quantifying fluid
sample contamination from oil and synthetic mud systems. Measurements can determine
mud invasion as low as 1%.
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