New offshore Tanzania gas find lifts LNG resource
BG has discovered more gas offshore Tanzania in the Taachui structure on the western boundary of block 1.
According to partner Ophir Energy the drillshipDeepsea Metro I drilled Taachui-1 and the subsequent ST1 side track to a TD of 4,215 m (13,829 ft) MD.
The well encountered gas in a 289-m (948-ft) gross column within the target Cretaceous reservoir interval. Total net pay was 155 m (508 ft). Reservoir properties appear to be in line with those encountered atMzia, the other Cretaceous discovery on the block.
Ophir estimates Taachi’s potential recoverable resource at around 1 tcf (28 bcm), adding that the gas column could extend into a second compartment to the west that could be of a similar size. However, this will need to be confirmed by appraisal drilling.
Results from a drillstem test on the Taachui discovery are expected to be issued before end-June.
Ophir CEO Nick Cooper said: “The Taachui-1 discovery continues the 100% drilling success rate on blocks 1, 3 and 4, and adds further resource to support the LNG development in Tanzania. The result is important to Ophir for two reasons: firstly, it extends the proven hydrocarbon system to the eastern limit of, and partly de-risks, Ophir’s East Pande permit on which the Tende-1 well will be drilled later in 2014; secondly, the aggregate recoverable volumes of about16.7 tcf (470 bcm) are approaching the threshold needed to underpin a potential third LNG train from blocks 1, 3, and 4.”