Whiting Petroleum Corporation WLL has become the first oil and gas sector casualty of the current slump in crude demand in the wake of the coronavirus or Covid-19 global pandemic, and the price war between producers triggered by Saudi Arabia and Russia. Early on Wednesday (April 1), Denver, Colorado, U.S.–headquartered Whiting announced it had filed for Chapter 11 bankruptcy protection in the Bankruptcy Court for the Southern District of Texas, prompting a suspension of its shares (NYSE:WLL) on the New York Stock Exchange. In a statement, Whiting said its board had concluded that given a severe downturn in oil and...