TotalEnergies flow tests wells for Suriname development
TotalEnergies SE flow tested two wells in Block 58, offshore Suriname. The results extend the proven petroleum system to the northern boundary of Block 58, confirming the presence of high-quality reservoir sands and the generation and migration of black oil.
Bonboni-1, the first exploration well in the northern portion of Block 58, was drilled in water depths of nearly 2,000 m about 45 km from APA’s discoveries in the Maka-Kwaskwasi-Sapakara-Keskesi trend. In the primary Maastrichtian and Campanian objectives, the well encountered high quality water bearing reservoirs. In a Maastrichtian objective, the well penetrated 16 m (52 ft) net pay in a single zone, consisting of low-GOR, 25-degree API black oil. The aerial extent of this pay zone is not sufficient to support a commercial development, and the well will be plugged and abandoned.
At Sapakara South-1 (SPS-1), an appraisal well drilled earlier this year, flow and subsequent pressure build-up tests were recently completed. The well is on the eastern edge of Sapakara nearly 4 km from the discovery well. As disclosed earlier this year, SPS-1 encountered about 30 m (98 ft) of net black oil pay in a single zone of high-quality Campano-Maastrichtian reservoir.
A restricted flow test averaged 4,800 b/d for 48 hours. Without flow restrictions, a development well would produce at a significantly higher sustained rate. Preliminary analysis of the data indicates that a single reservoir in SPS-1 proved connected to resources of 325-375 million bbl of oil in place, exceptional reservoir quality with permeability in the range of 1.4 Darcies, and black oil with a 34-degree API and flowing gas-to-oil ratio (GOR) of about 1,100 scf/bbl. Seismic imaging of this Sapakara reservoir supports substantially more potential resource, which could be proven through additional appraisal drilling.
Following completion of operations at Bonboni, the Maersk Valiant will drill the Krabdagu exploration prospect, 18 km east of SPS-1. Krabdagu has a similar seismic signature to the two successful wells at Sapakara and the discovery well at nearby Keskesi.
The Maersk Developer is nearing contract completion and TTE will release the rig once operations are finished at SPS-1. APA will mobilize the Noble Gerry de Souza to Block 53 early in 2022, where it has one committed well and options for two additional wells.
TotalEnergies is operator at Block 58 (50%) with partner APA Corp. (50%).