Well test confirms high productivity -Guará Norte

12 April 2011 

Well test confirms high productivity on Guará Norte, offshore Brazil

BG Group today announced the conclusion of a drill stem test (DST) on the Guará Norte well (3-SPS-69) in Block BM-S-9 in the Santos Basin, offshore Brazil.

The DST confirmed high productivity of some 6 000 barrels of oil per day (bopd) of light oil (approx 30˚ API) with flow rates constrained by test facility capacity. Production potential from this well is estimated at around 50 000 bopd.

The results from the Guará Norte appraisal well are in line with those recorded from the DST on the original Guará well (1-SPS-55)* and reaffirm the excellent reservoir characteristics of this discovery.

The Guará Norte well was drilled at a water depth of 2 118 metres, approximately 305 kilometres (kms) off the coast of Sao Paulo state and around 15 kms northeast of the original discovery well.

BG Group has a 30% interest in the BM-S-9 concession, offshore Brazil (Petrobras, operator 45%, Repsol 25%).

-ends-

Notes to Editors:

* http://www.bg-group.com/MediaCentre/PressArchive/2009/Pages/09Sept2009.aspx

BG Group plc (LSE: BG.L) is a world leader in natural gas, with a strategy focused on connecting competitively priced resources to specific, high-value markets. Active in more than 25 countries on five continents, BG Group has a broad portfolio of exploration and production, Liquefied Natural Gas (LNG) and transmission and distribution business interests. It combines a deep understanding of gas markets with a proven track record in finding and commercialising reserves. For further information visit: www.bg-group.com

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There are matters set out within this announcement that are forward-looking statements. Such statements are only predictions, and actual events or results may differ materially. For a discussion of important factors which could cause actual results to differ from these forward-looking statements, refer toBG Group's Annual Report and Accounts for the year ended 31 December 2010. BG Group does not undertake any obligation to update publicly, or revise, forward-looking statements, whether as a result of new information, future events or otherwise, except to the extent legally required.