According to BHPâs Operational Review for the year ended 30 June 2019, its Tuk 1 New Field wildcat (NFW), Block 23 (a), was plugged and abandoned (P&A) with hydrocarbons encountered â as previously reported in late May 2019. Â This discovery alongside Hit-Hat-1, Block TTDAA-14 and Bele-1 in the Block 23 (a) have âestablished additional volumes around the Bongos discoveryâ - evaluations are ongoing. On 17 April 2019 BHP reported in its Operations Review for the nine months ended 31 March 2019, that it had encountered hydrocarbons in the Bele 1 NFW which drilling was still in progress. The interest holders are the operator BHP with 70% and BP holds the remaining 30%.  The well was spudded on 24 April 2019 in 1,954 m water depth using the Transocean Drillship Deepwater Invictus. It reached total depth of 14,799.87 ft (4,511 m).   According to local sources, BHP plans two-three wells appraisal program in its deep-water blocks: TTDAA 5, TTDAA 14, and 23 (a). Details have not been released. Preliminary estimates of the combined unrisked gas resource potential of the blocks TTDAA 5, TTDAA 6, TTDAA 28 and TTDAA 29 are in the range of 2.4-23.6 Tcf and the unrisked crude oil resources are in the range of 428-4,200 MMbo.  Hi-Hat-1 NFW was spudded on 20 May 2019, in 1,782 m water depth and reach total depth (TD) of 12,480.31 ft (3,804 m).Â  The proposed total depth (PTD) was 3,688 m (12,100 ft) with the main objective in the Pliocene. This is likely to be the appraisal well for Bongos 2 NFW, located in the Trinidad Basin. The well which was plugged and abandoned (P&A), with three gas zones and at least one zone being gas/condensate was spud on 20 July 2018 in 1,910 water depth using the Transocean Drillship, Deepwater Invictus, and it reached total depth (TD) of 5,151 m in October 2018. It replaced Bongos 1 NFW which encountered mechanical problems. The rig was moved to well location on 18 July 2018, and it was expected to stay for approximately 90 days. The operator acquired in 2014 17,700 sq km 3D seismic over seven blocks, included the TTDAA 14. The interest holders are BHP with 70% and the remaining 30% with BP TT. Plans for the well were first reported in late February 2018.  Â Background Information  The operator planned to drill two wells â Bele 1 and Tuk 1. Trinidad and Tobago Marine Advisory Notice announced the arrival of the drillship in late February 2019 for the operatorâs three wells program, including the Hi Hat-1 â likely to be the appraisal well for Bongos 2 NFW, TTDAA 14 Block. BHP drilled two wells in this block Burrokeet 1 and 2    As of mid-January 2017, due to mechanical problems BHP plugged and abandoned (P&A) the Burrokeet 1 NFW. The well was spudded on 5 August 2016, with a proposed total depth (PTD) of 8,534 m (28,000 ft) and it reached 3,337 m (10,948 ft). The main objective was in the Eocene, in a water depth of 1,923 m.      BHP P&A its Burrokeet 2 NFW. The well reached a total depth (TD) of 7,347 m (24,105 ft) in mid-December 2016. It was spudded on 18 August 2016, in 1,923 m water depth.    As of early May 2018, BHP was still interpreting the acquired 17,700 sq km of 3D seismic shot over seven blocks including the Block 23 (a). The acquisition conducted by PGS began in Mid-March 2014 and it is estimated that it was completed in mid-November 2014.     On 17 April 2014, local sources confirmed that BP farmed out a majority interest to BHP Billiton in deep-water blocks TTDAA 14 and 23(a). BP on 25 July 2011 reported that it was awarded two deep-water exploration and production blocks in Trinidad and Tobago, doubling the companyâs acreage holdings in the country. BP was awarded a 100% interest in the blocks 23 (a) and TTDAA 14, both of which are in deep-water frontier acreage of Trinidadâs eastern coast. The contracts were awarded as production sharing contracts. Block 23(a) is located about 300 km NE of BPâs Galeota Point operations base. The block covers 2,600 sq km in water depths averaging 2,000m.
Bele 1, Tuk 1 (hc disc) in Block 23 (a) targeting Pliocene reserves, TD=3982ms and 4511m respectively, WD around 2000m and Hi-Hat 1 (hc disc) was drilled in Block 14, also targeting Pliocene reserves, TD=3804m end WD=1782m. "These 3 discoveries in our Northern licences have established additional volumes around the Bongos disc. and evaluations are ongoing" operator said.