"Trump's strategy seems to rely on the free market forcing production down and implicit in that is some companies going under," said Dan Eberhart, a Trump donor and chief executive of drilling services company Canary Drilling Services. Almost 40% of oil and natural gas producers face insolvency within the year if crude prices remain near $30 a barrel, according to a survey by the Federal Reserve Bank of Kansas City. Oil producer Whiting Petroleum Corp. and service provider Hornbeck Offshore Services Inc. filed for bankruptcy last week.