LLOG Exploration Company L.L.C. (“LLOG” or the “Company”) and Blackstone (NYSE: BX) today announced the formation of a long-term, strategic partnership and have committed to invest over $1.2 billion to expand and accelerate LLOG’s offshore operations in the Gulf of Mexico. The partnership will leverage the combined operational and financial resources of LLOG and private equity funds managed by Blackstone (collectively with their affiliates “Blackstone”) to expedite development of LLOG’s four recent deepwater discoveries as well as the exploration and appraisal of its extensive prospect inventory, which includes over 110 offshore leases. In addition, the partnership will expand LLOG’s asset base in the Gulf of Mexico through federal lease sale participation, farm-ins and M&A activities, further building upon its position as one of the largest private companies in the basin. This strategic partnership is the largest private equity financing executed in the Gulf of Mexico to date. LLOG is one of the top 10 privately owned oil and gas companies in the U.S. and one of the largest private operators in the Gulf of Mexico (“GOM”). LLOG operates over 95% of its reserves and 86% of its prospects. During the last two years, the Company has made four consecutive discoveries, including two deepwater Gulf of Mexico discoveries to date during 2012, and over the last 10 years the Company has yielded an exploration drilling success rate of 70%. Blackstone is one of the largest alternative asset managers in the world, with more than $205 billion in assets under management and a leading energy sector private equity investing franchise with an extensive, successful track record of investing in partnership with exceptional management teams seeking to fully capitalize on growth opportunities. Blackstone is currently investing from two private equity funds which aggregate over $19.3 billion of committed capital including Blackstone Energy Partners (“BEP”), its dedicated energy sector fund.