DHI app, sense-check

How to use this app:
Give your scores to DHI observations and you will get back-of-the-envelope R-ratio (hydrocarbon/nonhydrocarbon probabilities) plus Revised Pg according to Bayesian update.

DHI scheme in relation with R values:

- No DHI, R = 0;

- Low Grade, R = 1;

- Moderately Strong, R=2;

- Strong, R=3.

Typically, high grade DHIs (R: 2-3) have a technical success rate > 50% with commercial success ~30%

Chance of geological success, %

False-positive scenario probability, %

Possible fluid contact reflection (with correct polarity)

Down dip conformance of amplitude anomaly with depth

Amplitude anomaly (i.e. possible fluid indicator consistent with rock physics model)

Demonstrable AVO fluid vector across potential contact

Lateral amplitude changes at top reservoir consistent with possible fluid contact

Quality of available seismic

Initial Pg Vs. Revised Pg with single-value R lines

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Commercial success

Technical success

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