On 11 September 2019, BW Energy Gabon Pte Ltdâs partner Panoro announced that the wildcat Dussafu Hibiscus Marin 1 (DHIBM-1) intersected 33 m of hydrocarbon sands in the Gamba formation with porosities ranging between 21% and 23%. The well was spudded around 12 August 2019 was drilled to a TD of 3,538 m MD in the Ruche EEA (Dussafu) permit. The results of DHIBM-1 are highly encouraging and Hibiscus Updip Prospect pre-drill resources of 12 MMbo could be exceeded. Earlier on 30 August 2019 while logging the well Panoro announced that DHIBM-1 had intersected oil likely in the Gamba sandstones and. The sidetrack DHIBM-1ST started at the conclusion of the logging operations to better assess the resources of the discovered structure.  The company used the âNorveâ J/U owned by Borr Drilling Ltd, the rig was reported to be on site on 6 August 2019. The jack-up was positioned in 116 m of water depth at about 2 km southwest of existing well Hibiscus Marine 1 (HIBM-1). The latter well was plugged and abandoned with oil shows in the Gamba sandstones by Arco in 1991. The wildcat DHIBM-1 is a vertical well which target was to intersect the Aptian Gamba sandstone in an updip position from HIBM-1. BW Energy Ltd estimated the P50 prospective resources unrisked of the Hibiscus Updip prospect at 12 MMbo.  Should the wildcat DHIBM-1 be positive, its resources could be aggregated with those of the existing Ruche and Ruche Northeast accumulations and be the subject of additional phases of development.  BW Energy operates the Ruche EEA (Dussafu) permit with 73.5% and partner Panoro 7.5%, GOC 9% and Tullow 10%.  Background Information    The Hibiscus prospect was tested by Arco in 1991 with the wildcat HIBM-1. The well yielded disappointing results encountering oil shows in the Gamba sandstones but with good permeabilities. BW Energy entered in the Ruche EEA (Dussafu) permit in April 2017 when acquiring the interest of former operator Harvest Natural Resources.
Gabon (South Gabon Sub-basin (Gabon Coastal B.)) Gamba