TBR = a certain area I suspect...

Carbonate Play = a type of rock from which the gas is produced ( Carbonates, are often enough remains of a reef area, and if pentrated by water have great permeability)

Conventional = A typical development that is common business in the oil industry...

Shale = a certain type of rock, often the low permeability and low porosity, however in great amount (like in our situation)... developable...

Unconventional = A development which takes time to evaluate, because of the technical expertise needed or tests required ... Unconventional is typically what is now currently the difficult / developing / technologically new part of the oil/gas industry... with all its hurdles still to over come...

Hope that helps a little...

It not... look it up on google.