Tanzania: Block 4 appraisal, Block 7 exploration


BG Group has successfully completed and flow tested the Pweza-3 appraisal well as it proves up reserves for a planned two-train liquefied natural gas development. The Pweza-3 appraisal well was drilled 2km north of the original Pweza discovery well and encountered 61 metres of pay. The drill stem test achieved an equipment-constrained flow rate of 57mcf/d with minimal drawdown and no observable depletion after five days of flow. Partner Ophir Energy said the unconstrained flow rate was expected to be more than 150mcf/d, and the test had confirmed that the Tertiary reservoirs in Block 4 had similar excellent characteristics to those in Block 1.