The petitioners said the drilling rig engines are releasing as much as 79,000 tons of nitrogen oxide a year, based on estimates of emissions per well in a 2005 report done for the Western ...

Most smaller drilling rig engines aren't regulated in Colorado, but permits are needed for 1,200-horsepower engines and larger, said Mike Silverstein, ...

Stena Drilling Rig Gets an Engine Overhaul October 29, 2018 ... and the 58,000 GWT Stena IceMAX and Stena Carron drill ships. The engine was dismantled to allow engineers to carry out maintenance ...

Problems continue for Shell Oil’s mobile drilling rigs in Alaska waters. The tug towing the Kulluk, which left Dutch Harbor last Friday, is having engine trouble in 20-foot seas about 50 miles ...

Consol Energy Inc. is planning to use electric engines when it drills at Pittsburgh International Airport. Consol Energy Inc. is planning to use electric engines when it drills at Pittsburgh ...

DENVER - Colorado environmental and community groups want federal officials to make the state regulate oil and gas drilling rig engines, which they claim spew harmful air pollution that will ...