Tullow finds oil in Ghana and Uganda

British oil titan Tullow Oil (TLW) announced that it has found oil at its sites off the coast of Ghana and onshore in Uganda.
The FTSE 100-listed explorer's Banda-1 exploration well in the West Cape Three Points licence offshore Ghana discovered oil in Cenomanian-aged reservoirs.
In Uganda, its Jobi-East-1 and Mpyo-3 wells, in Exploration Area 1 have both successfully encountered oil in line with pre-drill expectations.
The Banda-1 well was drilled to a total depth of 4,580 metres in water depths of 921 metres by the Atwood Hunter rig.
It is located 9.6 kilometres southeast of the Odum discovery in the eastern part of West Cape and Tullow holds and interest of just under 23%.
"Banda-1 was our first wildcat designed specifically to investigate the potential of Cenomanian age reservoirs in West Cape Three Points," said Angus McCoss, Tullow's exploration director.
He said that finding some light oil in such a thick sandstone package is an encouraging first step, but added that the reservoir is poor quality at this location.
"The well results will now be integrated into the regional geologic model to re-evaluate the remaining potential in other prospects at this stratigraphic level within our acreage."
The company said that on completion of operations, the well will be suspended for potential future use and the rig will move to complete the drilling of the Makore-1 well which is targeting Turonian age reservoirs in the south of the West Cape Three Points licence. The upper section of this well was drilled by the Eirik Raude rig during April.
In Uganda, the onshore Jobi-East-1 and Mpyo-3 wells, in Exploration Area 1, have both successfully encountered oil in line with pre-drill expectations. These wells have successfully calibrated large seismic and gravity data anomalies, which have now been proven as oil accumulations.
Successful logging and sampling operations have confirmed the presence of oil in two zones of high quality reservoir at Jobi-East 1 after the well, drilled by the OGEC RR600, reached a total depth of 563 metres.
Tullow said an accelerated drilling campaign comprising up to four Jobi-East appraisal wells is planned for the second half of 2011 to assess the full extent of this important new oil accumulation.
The Mpyo-3 well - drilled by the OGEC IRI-750 to 513 metres - has intersected 21 metres of oil bearing reservoir sands at a depth of 340 metres. Successful logging operations confirmed the sands to be of good quality and that they contain highly viscous oil similar to that encountered in Mpyo-1.
The well was drilled by the to a total depth of 513 metres and was suspended allowing for future re-entry to conduct production testing operations.
Both Jobi-East 1 and Mpyo-3 wells have now been suspended allowing for future re-entry to conduct production testing operations.
Subject to completion of the farm-down, Tullow will have a 33.33% interest in the EA1 licence.
McCoss commented: "The Jobi-East-1 and Mpyo-3 well results mark an excellent start to this next phase of our exploration and appraisal campaign in the Lake Albert Rift Basin.
"We look forward to many more exciting wells as we endeavour to determine the total oil resource base which will underpin the basin-wide development preparations currently in progress."

• By Sarah Modlock