[ 2011-04-16 ]

More Oil, Gas Discovered
More oil has been discovered in Ghana after one of
the partners of the Jubilee oilfield announced the
successful appraisal of one of the wells on
Wednesday.

The UK firm Tullow Oil Plc announced a successful
Tweneboa-4 appraisal well offshore Ghana and the
commencement of a major exploration and appraisal
campaign in the Lake Albert Rift basin, onshore
Uganda.

The Tweneboa-4 appraisal well in the Deepwater
Tano licence offshore Ghana, it stated, has
successfully encountered gas condensate in good
quality sandstone reservoirs.

Results of the drilling, wireline logs and samples
of reservoir fluids have confirmed the western
extent of the Tweneboa gas condensate
accumulation, it added.

The well, located 3.9 kilometres southwest of the
Tweneboa-2 appraisal well, was drilled in the
western flank of the accumulation to complete the
appraisal of the Tweneboa gas-condensate
discovery.

According to a statement from the oil giant, the
well encountered 18 metres of net gas condensate
pay in high quality stacked reservoir sandstones
which are in static pressure communication with
both the Tweneboa-1 and Tweneboa-2 wells.

The Deepwater Millennium dynamically positioned
drillship drilled Tweneboa-4 to a total depth of
4,007 metres in water depths of 1,436 metres. On
completion of operations, the well will be
suspended for future use in field appraisal and
development.

Tullow, which holds 49.95 percent, operates the
Deepwater Tano licence and is partnered by Kosmos
Energy Ghana (18 percent), Anadarko Petroleum (18
percent), Sabre Oil & Gas (4.05 percent) and the
Ghana National Petroleum Corporation (GNPC) with
10 percent carried interest.

Following the signing of the SPAs for the farmdown
to CNOOC and Total on March 29, 2011, the
statement added that the exploration and appraisal
programme has been reactivated and two wells are
expected to commence drilling in Exploration Area
1 (EA 1) within the next two weeks.

Commenting, Angus McCoss, Exploration Director
said: 'Tweneboa-4 is an important milestone as it
is the final well to be drilled in the Tweneboa
appraisal programme.

The upcoming programme of well testing in the
Tweneboa field, along with drilling and well
testing in the Enyenra field will provide
essential information on well deliverability,
dynamic reservoir connectivity and hydrocarbon
volumes, which will be used to optimise our
development plans for these major fields.

We are also delighted to be starting drilling
activities again in EA 1 in Uganda and are now
gearing up for a five-rig drill-out campaign in
the second half of the year.'

Tullow, which is a leading independent oil and
gas, exploration and production group quoted on
the London and Irish Stock Exchanges, is a
constituent of the FTSE 100 Index.

The Group has interests in over 90 exploration and
production licences across 22 countries and
focuses on four core areas: Africa, Europe, South
Asia and South America.

In Africa, Tullow has production in Ghana, Gabon,
Côte d'Ivoire, Mauritania, Congo (Brazzaville)
and Equatorial Guinea with two large appraisal and
development programmes in Ghana and Uganda.

It also has exploration interests in Gabon,
Côte d'Ivoire, Liberia, Sierra Leone,
Mauritania, Senegal, Tanzania, Madagascar,
Namibia, Kenya and Ethiopia.

Source - Daily Guide

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