He has previously served as part of the Lundin Group, as former chairman of Eastern Transnational Co. in Russia, as operations geologist for Shell Oil Co. in Yemen, and at Shell Western E&P.

Tholen joins the firm from Albrecht & Associates Inc.

Collins will be responsible for the development and implementation of Willbros strategy for the oil and gas markets and operations of oil and gas product and service lines.

MCW Energy Group has accepted the resignation of Warren Dillard as the CFO of MCW and thanks him for his contributions to MCW during its formative years in transforming into a vertically integrated energy company.

MDU Resources invested more than US $900 million last year and plans to invest another US $3.9 billion over the next five years.

McCabe will directly oversee and manage Cardinal Energy Group's assets.

The appointment of Bozoki follows the resignation of Sam Yik as chief financial officer.

Concho Resources Inc. is an independent oil and natural gas company engaged in the acquisition, development and exploration of oil and natural gas properties.

Paul Davis, senior director of crude oil origination, and Todd O'Malley, senior director of clean products, will become co-heads of commercial.

Based in Houston, Texas, with offices in Beijing, and Taiyuan City, China, Far East Energy Corpo. is focused on coalbed methane exploration and development in China.