Beetaloo or bust: the route to commercial success for an Australian shale play, page-47

You're using 400 acres per well. That is 1.62 km, at 3000m this is 540m well spacings, at 5000m it's 324m spacings.

Typical spacings in North America are 200-300m, this essentially doubles the number of wells and by association gross recovery. You are not tight enough on spacing that they wells are robbing each other's revovery.

This is typical for this early phase of piloting/development. From a reserves strategy you leave yourself room to grow your reserves by down spacing...doesnt cost anything to grow the reserves and you use it at the time of your choosing.