Deckhands on a Sandridge Energy oil rig change out a drill pipe in a fracking operation on the Oklahoma border in Harper County, Kan., in February 2012.
Deckhands on a Sandridge Energy oil rig change out a drill pipe in a fracking operation on the Oklahoma border in Harper County, Kan., in February 2012. Bo Rader Wichita Eagle
Deckhands on a Sandridge Energy oil rig change out a drill pipe in a fracking operation on the Oklahoma border in Harper County, Kan., in February 2012. Bo Rader Wichita Eagle