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Tullow Oil gives Kenya exploration, appraisal update

23/01/2015 by Sharon Shahzad


Tullow Oil has provided an update on a series of exploration and appraisal activities in onshore Kenya Blocks 10BB, 13T and 10BA.

Epir-1 exploration result:

The Epir-1 exploration well is located in block 10BB in the North Kerio Basin, a separate sub-basin from that tested by the Kodos-1 well, 25 km to the southwest. Whilst not a discovery, the well encountered oil and wet gas shows over a 100 metre interval of non-reservoir quality rocks, demonstrating a working petroleum system in this lacustrine sub-basin. Further exploration activities will be considered in the North Kerio Basin following analysis and integration of the valuable data collected from the well.

The Weatherford 804 rig drilled the Epir-1 well to a final depth of 3,057 metres. The well will be plugged and abandoned, following which the rig will move to the Ekales-2 location in the South Lokichar Basin where it will conduct appraisal of the discovery made by the Ekales-1 well. The well will target reservoirs in a separate fault block to the east of the discovery well, further away from the basin bounding fault.

Engomo-1 exploration well commenced drilling:

The new SMP-106 rig has commenced drilling the Engomo-1 well, the first test of the prospective North Turkana Basin in Kenya Block 10BA. This onshore prospect is to the west of Lake Turkana where numerous naturally occurring oil slicks and seeps have been observed. A result is expected during early March 2015.

Ngamia and Amosing appraisal wells:

The PR Marriott 46 rig recently completed drilling the Ngamia-5, Ngamia-6 and Amosing-3 appraisal wells. Both Ngamia wells were drilled from the Ngamia-1 discovery well pad. Ngamia-5 was drilled to a final depth of 2,317 metres and was deviated approximately 500 metres northeast of Ngamia-1, encountering between 160 to 200 metres of net oil pay. Ngamia-6 was drilled to a final depth of 2,480 metres and was deviated approximately 800 metres north of Ngamia-1, encountering up to 135 metres of net oil pay. Both wells have been suspended and remain available for use in an Extended Well Test programme that will commence in the second quarter 2015.

The Amosing-3 well in Block 10BB continued the successful appraisal of the Amosing oil field. The well was drilled approximately 1 km northwest of the Amosing-1 discovery well and successfully encountered over 107 metres of net oil pay in good quality reservoir sands. The well reached a final depth of 2,403 metres and has been suspended for use in future appraisal and development activities. The PR Marriott 46 rig will now be moved to continue the appraisal of the Ngamia field, drilling the Ngamia-7 well to test the field's eastern flank.

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