In 2005, Northern Petroleum began exploratory drilling for oil at its Sandhills-2 borehole at Porchfield, but ceased operations in October that year after failing to find significant reserves.
I 2005 begyndte Northern Petroleum at bore for at undersøge, om der var olie, med dets Sandhills-2 borehuller i Porchfield, men stoppede processen i oktober samme år, da der ikke blev fundet olie af betydning.