Volumetrics: ask, adjust, read the spread

Ask in plain words. “STOIIP”, “GIIP” and “in place” are enough to route the question to Volumetrics.

The widget opens with six uncertain inputs, each a minimum, a mode and a maximum.

Drag a slider and let go: the Monte Carlo runs again on the server and every number updates.

The plot keeps the fluid colours: oil is green, gas is red.

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Estimate the STOIIP and GIIP in place

Volumetrics (Monte Carlo) drag a range · release to regroundgrounded · cited

Oil (STOIIP)Gas (GIIP at 500 scf/stb)

FrequencyCumulative probability

P90P50P10

STOIIP (MMstb)Frequency CDF

FrequencyCumulative probability

P90P50P10

STOIIP (MMstb)Frequency CDF

FrequencyCumulative probability

P90P50P10

GIIP (Bscf)Frequency CDF

STOIIP P90 539 · P50 793 · P10 1143 MMstb · Recov P50 238 MMstb at RF 0.3 STOIIP P90 576 · P50 855 · P10 1234 MMstb · Recov P50 256 MMstb at RF 0.3 GIIP P90 288 · P50 427 · P10 617 Bscf · Recov P50 256 MMstb at RF 0.3Reset

Area20 / 30 / 45 km²

Min

Mode

Max

Gross thickness30 / 50 / 70 m

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Mode

Max

Porosity0.15 / 0.22 / 0.28 frac

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Mode

Max

Porosity0.15 / 0.27 / 0.28 frac

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Mode

Max

Water saturation Sw0.2 / 0.3 / 0.45 frac

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Mode

Max

Oil FVF Bo1.2 / 1.35 / 1.5 rb/stb

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Mode

Max

Net-to-gross (vert.)0.6 / 0.75 / 0.9 frac

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Mode

Max