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Thursday, June 5, 2014
Ophir Energy and its partner in Tanzania, operator BG Group, saw a new gas discovery on Block 1 with the drilling of the Taachui-1 and Taachui-1 ST1. Both the Taachui-1 and its subsequent sidetrack were drilled by the Deepsea Metro I drillship close to the western boundary of Block 1.
The Taachui-1 ST1 well was drilled to a total depth of 4,215 meters MD. The well encountered gas in a single gross column of 289 meters within the targeted Cretaceous reservoir interval. Net pay totaled 155 meters. Observed reservoir properties are in-line with those encountered at Mzia, the other Cretaceous-aged discovery on Block 1.
Estimates for the mean recoverable resource from the discovery are around 1 Tcf. The size of the gas column is such that the discovery could extend into a second compartment to the west which has the potential to be of a similar size. An appraisal well will be required to confirm this upside and is under consideration by the JV partners.
A DST will now be performed on the Taachui discovery with results expected before the end of June.
Ophir CEO Nick Cooper commenting on the Taachui discovery 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 c.16.7 TCF are now approaching the threshold needed to underpin a potential third LNG Train from Blocks 1, 3 and 4.”
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