On 26 June 2018, Kosmos confirmed in an announcement that the Anapai-1A replacement wellbore for the Anapai-1 NFW on deepwater Block 45 was dry and is being plugged and abandoned. Kosmos reported that 'the prospect was fully tested, encountering high quality reservoirs in the targeted zones, but did not find hydrocarbons." The Anapai-1A wellbore reached at final TD of 4,556m after being spudded with the "ENSCO DS-12" rig around 22 May 2018. The original well, which was spudded in April 2018, was P&A'd after encountering stability issues before reaching TD. Anapai-1A had the same objectives as Anapai-1 and is located in a water depth of around 1,643m. The wells had the objective of testing "lower Cretaceous reservoirs in a structural trap on the flank of the basin," Kosmos CEO Andy Inglis said in the 26 June 2018 press release. Kosmos identified the Anapai prospect a number of years ago in the central portion of the 5,126 sq km block and previously indicated that the prospect hosts potential resources in the order of 700 MMboe in Early Cretaceous Upper Albian sands. Inglis also confirmed that the "forward drilling program remains unchanged given the independent nature of the prospects." Kosmos next plans to drill and undertake a second high-impact oil test over the Pontoenoe prospect in Block 42 after it completes operations on Anapai-1A. He also said this is, "the first of up to three independent prospects in Block 42 offshore Suriname. Pontoenoe is a similar play type to the Turbot and Longtail discoveries located approximately 70 km to the west in Guyana." The two other prospects on Block 42 are the Aurora and Apetina stratigraphic plays which the company estimates to contain over 500 MMboe of potential resources. Inglis, in a 7 May 2018 conference call, said that Kosmos has five 3D seismic defined prospects spread out across the two Surinamese deepwater blocks in total. Kosmos has five additional one-well options remaining for the "ENSCO DS-12" drillship and so follow up drilling in 2019-2021 is possible. The oil petroleum system has been proven in the area with Exxon's world-class discoveries in the Stabroek Block in neighbouring Guyana. Kosmos has a 50% interest in the 5,126 sq km Block 45 alongside Chevron. Kosmos is currently operator but operatorship will be passed to Chevron in the event of a commercial discovery as part of the terms of a 2012 farm-in agreement. The tract is located in water depths ranging from 198 to 2,000m. PGS's "Ramform Sovereign" vessel completed a 5,295 sq km 3D seismic survey in October 2012 over blocks 42 and 45. In 2016, an additional 6,500 sq km was acquired over these blocks in late 2016 (majority likely to be over Block 42) with the CGC "Oceanic Sirius" and "7 Oceans" as part of a farm-in agreement with Hess for Block 42. Processing of this data is ongoing and will exceed the minimum work obligations of phase one when complete, (1,000 sq km). The extension of the initial period of the PSC is due to expire in mid-September 2018, with two renewal periods of two years each allowed with additional one-well commitments for each.
Anapai 1A (Kosmos 50% op, Chevron 50% op in case of commercial disc.) in Block 45, encountered high quality Lwr Cretaceous reservoir, it did not encounter any hydrocarbons and the decision was made to plug and abandon the well (was a similar play type to the Turbot and Longtail discoveries which lie roughly 70km to the west in Guyana). TD=4556m.