The Parrylands-Guapo Fields In 2009 Trinidad and Tobago awarded a license to Petroleum Co. of Trinidad and Tobago Ltd. to explore tar sands at Parrylands-Guapo fields, which are thought to contain 2 billion barrels of oil. An Institute of Energy and Mining has recently been established that will "cater for the specific needs of what, in effect, will be an entirely new part of the local oil industry". By Christopher Walker