Petroleum Africa
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Tuesday, May 9, 2017
Senegal has logged another gas discovery off its coast with partners on the Cayar Offshore Profond, Kosmos Energy and BP, reporting the significant gas discovery with a potential estimated at 15 Tcf.
The Yakaar-1 was the first well in a series of four independent tests of the basin floor fan fairways, outboard of the proven slope channel trend opened with the Tortue-1 discovery Kosmos said.
The Yakaar-1 is located in nearly 2,550 meters of water and was drilled to an approximate total depth of 4,700 meters. The well intersected a gross hydrocarbon column of 120 meters in three pools within the primary Lower Cenomanian objective and encountered 45 meters of net pay.
The well results confirm the presence of thick, stacked, reservoir sands over a very large area with very good porosity and permeability.
After completion of operations on the Yakaar-1 well, the Atwood Achiever will mobilize to the Tortue-1 well to conduct a DST on the Tortue discovery, enabling the commencement of FEED in H2, Final Investment Decision (FID) in 2018 and first gas in 2021.
Kosmos has seen 100% success drilling in the basin with six successful discoveries and/or appraisal wells under its belt to date. According to company CEO Andrew G. Inglis, the resources discovered with the Yakaar-1 and the Teranga-1 discovery in 2016 support “second cost-competitive LNG hub.”
Kosmos estimates Yakaar-1 discovered a gross Pmean gas resource of approximately 15 trillion cubic feet (Tcf), in-line with pre-drill expectations. Preliminary analysis of gas samples conducted on the rig suggest the well encountered a gas with a condensate-to-gas ratio (CGR) in the range previously encountered at Tortue and Teranga, approximately 15-30 barrels per million standard cubic feet. An appraisal program is being planned to delineate the Yakaar discovery.
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