The number of rigs actively working on the shale basins of North Dakota was unchanged from last week despite a major late-week rally in oil prices, data show. Data show 28 rigs actively exploring for or producing oil and natural gas in North Dakota as of Monday , unchanged from the previous week. North Dakota is the No. 2 oil producer in the United States. Rig count figures offer a loose gauge of the health of the energy sector as fluctuations in those numbers usually mirror movements in crude oil prices. Higher crude oil prices bring more capital for companies to invest in exploration and production and can lead to higher rig deployments. Crude oil prices rallied more than 4 percent during Friday trading […]