Continental Focus, International Reach

Tullow Sees More Success in Kenya

Friday, August 29, 2014

Tullow Oil has seen more success in Kenya on Blocks 10BB and 13T. On Block 13T the Etom-1 well, the most northerly well drilled to date in the South Lokichar basin, encountered approximately 10 meters of net oil pay. The well encounter with net pay extends the proven oil basin significantly northwards. Tullow said that based on this result the ongoing 550 sq km 3D seismic survey in the South Lokichar basin has been extended to cover a further 247 sq km in this northern area, including several similar prospects which are scheduled to be drilled in 2015.

The Weatherford 804 rig drilled the Etom-1 well to a final depth of 2,000 meters. The well will be suspended for use in future appraisal and development operations, following which the rig will move to drill the  Kodos-1 well in September to test the first of several prospects identified in the neighboring Kerio Basin.

Over on Block 10BB the Amosing-2, the first appraisal well on the Amosing field, was drilled from the Amosing-1 well pad. The well was deviated 1,350 meters towards the northeast and downdip from the discovery well to calibrate the oil-water contacts of the several oil pools identified in Amosing-1. The Amosing-2 well encountered up to 30 meters net oil pay. As planned, the well was then sidetracked back some 400 meters from the discovery well to provide additional insight into reservoir distribution in the area and for use in interference testing, planned to start later in 2014. The Amosing-2A sidetrack encountered up to 90 meters net oil pay in several oil pools.

The Sakson PR5 rig drilled Amosing-2 to a final depth of 2,878 meters and the Amosing-2A sidetrack to a final depth of 2,165 meters. The rig will now be moved to explore the southern extent of the South Lokichar basin to drill the Ekosowan-1 well in September 2014, 11.9 km southeast of the Amosing-1 well.

The Ngamia-3 appraisal well, also on Block 10BB, was successfully drilled 1.6 km north of the original Ngamia discovery. The well encountered 150 meters of net oil pay in both Auwerwer and Lokone reservoirs. The well has been suspended for likely use in future interference testing, appraisal, and development activities. The Marriott PR46 rig drilled Ngamia-3 to a final depth of 2,700 meters. The rig will now be moved to continue the appraisal of the Ngamia field with the drilling of the Ngamia-4 and Ngamia-5 wells which are planned to be used in an interference testing program in the Ngamia field.

Tullow also saw the SMP-105 testing/workover rig recently complete testing activities at the Ewoi-1 well. The well demonstrated good permeability in the water-bearing Lokone reservoirs and a program to target these updip is under consideration. Flow rates from the Auwerwer reservoir DST were limited to around 50 bpd, potentially due to the high wax content and shallow depth of this DST.

The lightweight rig is currently testing the Twiga South-2A appraisal well where two to three tests are planned.


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