CHEYENNE, Wyo. (AP) — A landowners’ group is calling on Wyoming oil and gas regulators to strengthen proposed rules to increase the minimum distance between drilling rigs and dwellings.

The staff of the Wyoming Oil and Gas Conservation Commission this month proposed increasing the minimum setback distance for a vertically drilled well to 500 feet. The minimum setback for wells drilled into the ground and then horizontally would increase to 750 feet.