Over the last four quarters free cash flow was $-5,061,000,000 , and operating cash flow was $28,623,000,000 .
Dividends paid to common shares over the same period were $3,614,037,800. Dividends paid as a percentage of free cash flow and operating cash flow were -71.41 % and 12.63 % , respectively.
They probably should cut their dividend since they're not producing the free cash to pay it. This is based on the last 4 quarters, but if anything that makes it too generous since crude prices were much higher during much of 2015.