Apache North Sea Limited

Apache entered the North Sea in 2003 after acquiring an approximate 97 percent working interest in the Forties field. Since acquiring Forties, Apache has actively invested in the field and has established a large inventory of drilling prospects through successful exploration programs and the interpretation of acquired 3-D and 4-D seismic data. Building upon its success in Forties, in 2011 Apache acquired Mobil North Sea Limited, providing the regional position with additional exploration and development opportunities across numerous fields, including operated interests in the Beryl, Nevis, Nevis South, Skene, and Buckland fields and non-operated interests in the Maclure field. In total, Apache has interest in approximately 1 million gross acres in the U.K. North Sea. In 2014, the North Sea position contributed 11 percent of worldwide consolidated production and 6 percent of year-end estimated proved reserves.

third-Quarter 2015 UPDATE