Natural gas prices may keep rising after doubling so far this year, further boosting related stocks

A worker with Apache Corp. is viewed at the Patterson 298 natural gas fueled drilling rig on land in the Permian Basin on February 5, 2015 in Mentone, Texas.
Spencer Platt | Getty Images

U.S. natural gas prices could continue to head higher, and that could be a positive for companies that produce, process or transport the commodity.