what I was trying to say badly was21 May 2018 11:24
if the geologist identifies a 'target' in three locations (seperate) and the first hits gas in that target, it follows that the chance of the target (same geology) in second location also having gas is logocally higher even though the actual cos can't increase.
this is the whole point of drilling te9, if succesfull it proves up gas at the other 'A' strucctures