So what you are saying is that a well that has no gas readings has an equal chance of success as a well with high readngs.
I find that laughable.
D49, In NZ many moons ago a well was drilled to TD, no Gas or Oil was recored in the mud logging on the first half of the hole, so it was not logged, the hole was P&A. Many years later Oil was found close by in a surface well, they went back to the old well and logged it from top to bottom, and looked at the old logs, they then perforated the casing and the well produced Oil, what happened was that the drilling mud was so heavy it held back the Oil/Gas.