A man walks past a Lufkin oil drilling pump in McKenzie County outside of Williston, North Dakota

 
A man walks past a Lufkin oil drilling pump in McKenzie County outside of Williston, North Dakota
A man walks past a Lufkin oil drilling pump in McKenzie County outside of Williston, North Dakota in this file photo taken March 12, 2013. General Electric Co said it will buy oilfield services provider Lufkin Industries Inc for about $2.98 billion to boost its presence in the energy business. REUTERS/Shannon Stapleton/Files