Oilfield cannibals: to save cash, U.S. drillers strip idle rigs

HOUSTON, Oct 7 (Reuters) - Cam Hewell runs Premium Oilfield Technologies, a small company that makes equipment and spare parts for drilling rigs from North Dakota to Texas. Like his rivals, he is trying to withstand the worst oilfield downturn in six years, but they face a vexing obstacle: cannibals.