BG Group Successfully Completes Pweza Appraisal

BG Group reported Wednesday that its appraisal of its Pweza gas field offshore Tanzania has been successfully completed with the confirmation of "excellent reservoir quality".

BG said it had finished a drill-stem test on the Pweza-3 well that confirmed both the excellent properties of the Tertiary-section reservoir, including flow and connectivity, while also confirming the firm's understanding and modeling of the field's geology.

The test, the first carried out on Tanzania's offshore Block 4, flowed at a maximum rate of 57 million standard cubic feet of gas per day, constrained by equipment. BG said the test also showed that development wells could flow at significantly higher rates and that the Pweza reservoir is "potentially the most prolific in BG Group's Tanzania portfolio".

BG Group Chief Executive Chris Finlayson commented in a company statement:

"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."

BG Group is operator, with a 60-percent interest, in Blocks 1, 3 and 4 offshore Tanzania. Ophir Energy holds the remaining 40 percent.

BG added that both companies are now evaluating 3D seismic survey data to help identify offshore targets for a new exploration program in 2014.


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