Material Balance Gas Initially In Place Calculator
Estimate the volumetric gas initially in place from pore volume and the real-gas formation volume factor Bg at standard conditions of 101325 Pa and 288.15 K.
Description
Estimate the volumetric gas initially in place from pore volume and the real-gas formation volume factor Bg at standard conditions of 101325 Pa and 288.15 K.
Material Balance Gas Initially In Place Calculator: Estimate the volumetric gas initially in place from pore volume and the real-gas formation volume factor Bg at standard conditions of 101325 Pa and 288.15 K.
When to use Material Balance Gas Initially In Place
Use this geological calculation for a transparent first-pass interpretation of measured rock, soil, fluid, well, stratigraphic, isotopic, geophysical, or seismic data under an explicitly selected model.
- Pressure
- Reservoir pressure in megapascals.
- Temperature
- Reservoir temperature in kelvin.
- z
- Gas deviation factor z.
- Area
- Drainage area in square kilometres.
- Net thickness
- Net thickness in metres.
- Porosity
- Porosity as a volume fraction.
- Sw
- Initial water saturation as a fraction.
How Material Balance Gas Initially In Place works
Estimate the volumetric gas initially in place from pore volume and the real-gas formation volume factor Bg at standard conditions of 101325 Pa and 288.15 K. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.1
- Bg
- Gas formation volume factor Bg in reservoir cubic metres per standard cubic metre.
- GIIP
- Gas initially in place at standard conditions in standard cubic metres.
Limitations and assumptions
- Petroleum correlations are fluid-, pressure-, temperature-, and region-dependent. PVT sampling, phase behavior, relative permeability, capillary pressure, heterogeneity, aquifer support, well constraints, history match, and units affect forecasts and reserves.
- Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.
Alternative or Complementary approaches
Compare independent measurements and models, retain units and analytical metadata, propagate uncertainty, and validate interpretations against logs, cores, maps, laboratory data, or field observations.
References
-
Reservoir engineering — Wikipedia contributors
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