Total commercial volumes from high impact drilling decreased to...

noo. i am found out. why why?

Total commercial volumes from high impact drilling decreased to 5.4 billion boe from 9.4 billion boe in 2017 due to smaller average pool sizes, although more 100 million boe+ discoveries were made. Overall commercial success rates were down to 33% in 2018, from 48%, reversing a three-year rising trend due primarily to lower ILX success rates from a higher well count. Exploration drilling-only finding costs remained below $1/boe.

source: https://www.oedigital.com/news/465936-drilling-up-but-success-rates-down

Looking at this is , its just a bet and nothing more. How do you value a bet? you have to be in it to win it though.