PRESS RELEASE

ONGC Videsh has encountered exciting result in its well Mariposa-1 which is under drilling in CPO-5 block of Colombia. ONGC Videsh is the operator of the block and holds 70% P.I and Amerisur Resources holds the remaining 30%.
The well Mariposa-1 commenced drilling on March 24, 2017 and was directionally drilled to a total depth of 11556 feet (MD). Electric Log analysis indicates the presence of approximately 120ft of oil saturated net pay in the Lower Sands Unit 3 of the Une Formation. Good hydrocarbon shows of oil and gas were also encountered while drilling this section. The well is currently under conditioning to run and cement a 7” production liner in order to initiate the testing programme.