Oil and gas driller Samson Resources Corp. filed for bankruptcy in Delaware Wednesday night, undone by a collapse in energy prices and billions in debt that KKR & Co. and other investors piled on to fund a 2011 takeover. Tulsa, Oklahoma-based Samson and its owners were stung by the price drop that put money into the pockets of consumers through lower gasoline and heating costs, while driving other producers, such as Sabine Oil & Gas Corp. and Quicksilver Resources Inc., into Chapter 11. Samson’s filing is among the biggest energy bankruptcies in the U.S. this year, but it probably won’t be the last. The shale-oil driller is, in a way, a victim of its own success. Samson and other producers have rushed to use hydraulic fracturing and horizontal drilling to tap previously hard-to-reach oil and gas deposits in shale formations, triggering a production boom that helped send prices tumbling. […]