Drilling Program Overview

drilling/perfurasaun Well Schematic: Cova - 1 Exploration Well Preliminary Hole Sizes, Casing, Mut, Cement All depths in mRT MO RT-LAT 24m Water Depth 1935 m55 RT-Seabed-1954 m85 Ditum in LAT Leni eni PSC 506.83 00A 14, AMS Zone 5S 26" pilot hole and open to 42" Hole Mud: SW+Sweeps MW: 1.03-1.05 SG Returns to seabed 1.89 SG Tail Cement to Seabed 1954m 36" Conductor 2014m Surface Casing WT 1.5" RL4 20 133 ppf RL4S 2238m 12-114 Hole to-3710m Length 1472m DRILLING WITHOUT BOP & RISER Mud: SW+Sweeps MW: 1.03-1.05 SG 1.89 SG Tail Cement to 3200m 8-1/2" Hole to-4204m Length 494m DRILLING WITH BOP & RISER Mud: HP Water Based Mud MW-1.15 SG (9.6ppg) Notes TD=4204mRT/4180mSS VERTICAL WELL Intermediate Casing 9-5/8" 53.5 ppf Q125 Tenaris Blue NF 3,700m Estimated LOT: 1.28 SG Laminaria/Plover - Firm Coring in Reservoir 1) In the success case (presence of HC), a second 27m core maybe cut and a full wireline formation evaluation performed. The well will then be abandoned ation & production 11

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