The aims of this course will be focussed on Tertiary carbonate systems and reservoirs of SE Asia and will provide an updated review on the controls of carbonate sedimentation, global changes through the Tertiary and how these affect reservoir types. The sequence stratigraphy of carbonate, and mixed siliciclastic carbonate systems will be discussed drawing on examples from SE Asia. The seismic and log expression of SE Asia carbonate systems will also be examined. The origin of sub-surface CO2 will be reviewed. Controls on the pore systems within carbonate reservoirs will be described.