Check out the Cott prospectus. It contains a very detailed independent geological evaluation from page 55.
Cott, WHL and STX worked this out out on the 2D alone while Shell shot 3D over the prospect in 2010.
http://www.cottoilandgas.com.au/files/8813/5807/5024/Cott_Oil__Gas_-_Prospectus_V_1.2_FINAL.pdf