Athabasca Tar Sand Reservoir Properties Derived from Cores and Logs


Richard Woodhouse,
The British Petroleum Company Limited



Log interpretation parameters for the Athabasca Tar Sand Lease No. 24 have been determined by careful correlation with Dean and Stark core analysis data. Significant expansion of Athabasca cores occurs as overburden pressure is removed. In the more shaly sands the core anlaysis procedures remove adsorbed water from the clays leading to further overestimation of porosity and free water volume.