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Thursday, October 3, 2013
BG Group and Ophir Energy continue their chain of successes offshore Tanzania, the most recent with the drillstem test (DST) of the Pweza-3 well. BG reported the DST was successfully completed, ending the intensive appraisal program on Block 4.
Initial results from a DST on Pweza-3 confirmed both the excellent properties of the Tertiary section reservoir, including flow and connectivity, and BG Group’s understanding and modeling of the field’s geology.
The Pweza-3 test, the first done in Block 4, flowed at a maximum 57 Mmcf/d, constrained by equipment. Importantly, the test demonstrated that development wells could flow at significantly higher rates and that the Pweza reservoir is potentially the most prolific in the partners’ Tanzania portfolios.
This Pweza well test also confirmed the robustness of the recently announced total gross resource in Tanzania of some 13 Tcf of gas.
BG Group Chief Executive Chris Finlayson said: “Our acreage in Block 4 around the Pweza, Chewa and Ngisi discoveries is now fully appraised and tested, with resources in the order of 4 trillion cubic feet (tcf) of natural gas. The work done demonstrates the excellent quality of these fields and that they can be developed as a northern production hub to feed a potential LNG export project.”
The Deepsea Metro-1 drillship will now move to Block 1 where it will drill a further appraisal well on the Mzia discovery.
BG Group as operator has a 60% interest in Blocks 1, 3, and 4 offshore Tanzania, with Ophir Energy holding 40%. The partners are now evaluating 3D seismic survey data to help identify offshore targets for a new exploration program in 2014.
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