• Texas high court agrees to rehear Exxon Mobil case
• Natural gas plunges 12 percent this month
• Del. refinery shutdown illustrates industry woes
• Shell seeks to reassure analysts on major projects
• Marathon to chop spending as it shifts its focus
• Energy companies defend their offshore work
• Shell denies asking for delay in offshore drilling plan
• Crude prices follow world markets down
• TNK-BP finally gets new chief executive
• Marathon makes oil discovery in North Sea
• Oil rises on mixed demand news
• Entergy denies overcharging city of Beaumont