FAR announced last week that the Samo-1 well in Block A2 in Gambia has spudded. The well is being drilled by the Stena Drillmax in 1000m of water and has a planned TD of 3100m. The Samo prospect is on the Albian Shelf play fairway tested successfully by FAR along strike in the SNE discovery in neighbouring Senegal. The two stacked reservoirs prognosed by the operator have combined P50 prospective resources of 825 mmbbls with a chance of success of 50% (source FAR). Samo-1 will be the first well to be drilled in Gambia in 40 years.
Blocks A2 and A5 are currently held by FAR (40% and operator), Petronas (40%) and the Erin Energy Corporation (20%). They were originally held 100% by Erin who farmed out to FAR for a carry of up to US$8 million on the Samo well. FAR subsequently farmed out to Petronas and are also carried on the Samo well. Erin Energy commenced proceedings for Chapter 11 bankruptcy in April of this year.
The Gambia and Senegal Licence Map (source MapStand)
It is interesting to note that the SNE Field outline terminates conveniently at the median line between Senegal and Gambia. In the same way the northern limit of the Soloo prospect in Gambia also terminates parallel to the median line and FAR have reported that the Soloo prospect may be an extension of the SNE Field. The N-S cross-section doesn’t show the Soloo prospect and the structure map doesn’t show any significant synclines nor faulting at the prospect and field boundaries.
Structural cross-section through SNE Field in Senegal and Samo Prospect in The Gambia (Source FAR)
Structure Map across the SNE Field in Senegal and Samo Prospect in The Gambia (Source FAR)
The available information is limited but based on the cross-section and structure map it is entirely plausible that there could be communication between a Samo discovery well and the SNE Field. This would be a great result for the A2 partnership but would likely introduce some cross-border unitisation issues that can often result in project delays.
This is certainly an interesting well and we will watch the results with interest.
This blog represents the personal opinions and views of the author and does not necessarily reflect the views of MapStand.