Tullow extends Ghana's Jubilee Field by successful appraisal
Tullow announced that the Mahogany-4 appraisal well has successfully encountered 43 meters of net pay and the South Grand Lahou-1 well encountered the targeted reservoir sands on prognosis but found them water-bearing at that location.
Jubilee Field extended
The Mahogany-4 appraisal well, located in the West Cape Three Points license offshore Ghana, has intersected light
oil columns in sandstone reservoirs. In total, 43 meters of net hydrocarbon pay have been penetrated. Mahogany-4 is
the eastern-most well on the Jubilee field to date and has been drilled to evaluate its lateral extent and to explore
deeper potential reservoir targets.
Results of drilling, wireline logs and samples of reservoir fluid confirm that the Jubilee field extends beyond this
location, which is 3.3 km southeast of Mahogany-2 and 3.8 km northeast of Mahogany-3. Oil bearing sands have been
encountered on prognosis with 15 meters of net pay in the main Jubilee reservoirs.
Below the main Jubilee reservoirs,the well has intersected 20 meters of net oil pay in new sand, a 4 meter wet gas
sand and 4 meters of net oil pay in Mahogany Deep-aged reservoirs. The potential of these underlying reservoirs will
be investigated with further exploratory wells in the area.
Mahogany-4 was drilled by the Atwood Hunter semisubmersible rig to a depth of 3,680 meters in a water depth of 1,079
meters. Following the conclusion of operations, the rig will move to drill the J-03 Jubilee development well.
Also in the West Cape Three Points license, approximately 5 km southwest of the Mahogany-4 well, the Aban Abraham
drillship has commenced drilling Mahogany Deep-2. The well will appraise the field's southern extent and a result is
expected in November.
Tullow has a 22.896 % interest in the West Cape Three Points license and its partners are Kosmos Energy (Operator)
and Anadarko Petroleum, (30.875 % each), the E.O. Group (3.5 %), Sabre Oil & Gas (1.854 %) and the Ghana National
Petroleum Corporation (GNPC) (10 % carried interest).
South Grand Lahou-1 wildcat result
The South Grand Lahou-1 wildcat has been drilled offshore Côte d'Ivoire in the CI-105 license. It encountered
the targeted reservoir sands on prognosis but found them water-bearing at this particular location. However, the data
gained will provide valuable proprietary insights into the ongoing prioritization of the numerous Jubilee-type
prospects in the Equatorial Atlantic inventory.
South Grand Lahou-1 was drilled by the Belford Dolphin drillship to a depth of 4,556 meters in a water depth of 1,876
meters.
Tullow has a 22.368 % interest in the CI-105 license and its partners are Anadarko Petroleum Corporation (Operator,
50 %), Thani Côte D'Ivoire (12.632 %) and the Societe Nationale d'Operations Petrolieres de Côte D'Ivoire
(Petroci) (5 % plus a 10 % carried interest).
Commenting, Angus McCoss, Exploration Director, said, "Extending the Jubilee field eastwards with the Mahogany-4 well
and encountering new hydrocarbon bearing reservoirs isan excellent result and strongly supports our current
interpretation of the Jubilee field resources. We look forward to drilling the two remaining wells in the current
Jubilee appraisal program by early next year to further refine our understanding of the upside potential."
"The South Grand Lahou-1 wildcat follows a remarkable opening run of 10 successful exploratory wells in our
Equatorial Atlantic licenses."
"This well found the reservoirs to be water-bearing at this location but provides critical knowledge to guide the
forward program which targets a number of Jubilee-like prospects in this exciting play fairway."
