Chesapeake Energy Corporation and CNOOC Limited Announce Niobrara-Focused Denver-Julesburg Basin and Powder River Basin

HONG KONG, – Chesapeake Energy Corporation (“Chesapeake”, NYSE:CHK) and CNOOC Limited (NYSE:CEO; SEHK:0883) today announced the execution of an agreement whereby CNOOC International Limited, a wholly-owned subsidiary of CNOOC Limited, will purchase 33.3% undivided interest in Chesapeake’s 800,000 net oil and natural gas leasehold acres in the Denver-Julesburg (DJ) and Powder River Basins in northeast Colorado and southeast Wyoming. The consideration for the transaction will be $570 million in cash at closing. In addition, CNOOC Limited has agreed to fund 66.7% of Chesapeake’s share of drilling and completion costs until an additional $697 million has been paid, which Chesapeake expects to occur by year-end 2014. Closing of the transaction is anticipated in the first quarter of 2011.

As the operator of the project, Chesapeake will conduct all leasing, drilling, completion, operations and marketing activities for the project. Chesapeake is currently operating 16 producing wells in the DJ and Powder River Basins that have reached initial production rates of up to 1,000 barrels of oil and 3.0 million cubic feet of natural gas per day. Over the next several decades, the companies plan to develop net unrisked unproved resource potential up to 5.0 billion barrels of oil equivalent (after deducting an assumed average royalty burden of 20%). Chesapeake is currently utilizing five operated rigs to develop its DJ and Powder River Basins leasehold and with the additional capital investment from CNOOC Limited, anticipates increasing its drilling activities to approximately 10 rigs by year-end 2011 and 20 rigs by year-end 2012.

CNOOC Limited will have the option to acquire a 33.3% share of any additional acreage acquired by Chesapeake in the area and the option to participate with Chesapeake for a 33.3% interest in midstream infrastructure related to production generated from the assets.

Aubrey K. McClendon, Chesapeake’s Chief Executive Officer, commented, “We are very pleased to announce our sixth industry development agreement and our second transaction with CNOOC Limited, China’s largest producer of offshore oil and natural gas and one of the largest independent oil and gas companies in the world. This transaction will provide the capital necessary to accelerate drilling of this large domestic oil and natural gas resource, resulting in a reduction of our country’s oil imports over time, the creation of thousands of high-paying jobs in the U.S. and in the payment of very significant local, state and federal taxes. In addition, Chesapeake’s embedded safety culture and integrated environmental protection strategies will be adopted to safeguard personnel and the surface and subsurface environment. Moreover, this project will advance the efforts of both the U.S. and China to reduce greenhouse gas emissions and accelerate commercial opportunities for the development of shale gas resources in China, furthering the objectives of the U.S. - China Shale Gas Resource Initiative announced by the White House on November 17, 2009.

Fu Chengyu, Chairman of CNOOC Limited, stated, “It is a great pleasure to establish further cooperation with Chesapeake in shale oil and gas development. The project highlights the joint interests of energy companies in both US and China to accelerate the development of shale oil and gas, increase energy supply and reduce greenhouse gas emissions. We believe this project is meant to be mutually beneficial to both parties as well as for both Sino-US energy industries.”

Yang Hua, Vice Chairman and Chief Executive Officer of CNOOC Limited, said, “This second transaction with Chesapeake represents another success in our overseas development as we implement a value-driven M&A strategy. l am confident the project will not only strengthen our solid resource and production base in overseas but create value to the shareholders in the long term.”

Chesapeake’s advisor on the transaction was Jefferies & Company, Inc., and CNOOC Limited’s advisor was Tudor, Pickering, Holt & Co. Securities, Inc.


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CNOOC Limited is China’s largest producer of offshore crude oil and natural gas and one of the largest independent oil and gas exploration and production companies in the world. Headquartered in Hong Kong, CNOOC Limited mainly engages in exploration, development, production and sales of oil and natural gas and has four major production areas in offshore China, which are Bohai Bay, Western South China Sea, Eastern South China Sea and East China Sea. In addition, it is one of the largest offshore crude oil producers in Indonesia. CNOOC Limited also has upstream assets in Nigeria, Australia and other countries. Further information is available at www.cnoocltd.com.