Halliburton has appointed Charlie Geer, currently vice president of finance, as corporate controller, effective Jan. 1, 2015. The move is part of an overall integration plan, following the acquisition of Baker Hughes in November.

As part of the integration plan, Greer also will take over accounting responsibilities on an interim basis, currently held by Chief Accounting Officer Christian Garcia. Meanwhile, Garcia will become senior vice president of finance and assume Chief Financial Officer Mark McCollum’s responsibilities on an interim basis. 

McCollum has been assigned the new role of executive vice president and chief integration officer.  In this capacity, he will serve as head of the Joint Integration Team that Halliburton and Baker Hughes are assembling in connection with Halliburton’s pending acquisition of Baker Hughes. McCollum will continue reporting to Halliburton’s Chief Executive Officer Dave Lesar, and will remain a member of the company’s executive committee.

McCollum is expected to resume his CFO duties at the conclusion of the two companies’ integration. Garcia will report to Lesar and will join Halliburton’s executive committee.  Belgacem Chariag, Baker Hughes’ president of global products and services, will lead the Joint Integration Team. 

“Establishing a unified integration team under the direction of Mark and Belgacem is an important first step in bringing together the talent and expertise of both companies to make a stronger combined company,” Lesar said in a statement. “We are committed to putting together a detailed and thoughtful integration plan to make the post-closing transition as seamless, efficient and productive as possible.”

On Nov. 17, Halliburton and Baker Hughes jointly announced a definitive agreement under which Halliburton will, subject to the conditions set forth in the agreement, acquire Baker Hughes in a stock and cash transaction.