Can you believe that we are several years into the shale boom already? For the past three years, investors have all been in love with production growth and making operations more efficient. Today, though, companies need to start thinking about generating cash. Cabot Oil & Gas (NYSE:COG), Range Resources (NYSE:RRC), and Southwestern Energy (NYSE:SWN) have made their hay as some of the best pure natural gas producers in the country, but how have they performed when it comes to funding that production without tapping the debt markets. 

One way investors can take a better look at this is to see how much of its capital expenditures are covered by operational cash flow and how that has changed over time. Find out how Cabot, Range, and Southwestern have done over the past couple years at closing the funding gap by tuning into the video below.