NJ.com. January 28, 2013. Retrieved 2014-01-07. Fallout from today's announcement that Hess will permanently close its Woodbridge petroleum refinery Oil Refineries: Given the preponderance of chemical and oil companies in the state, it may be no surprise that New Jersey is also home to a large number of in New Jersey. PA. NJ. MD. DE. Delaware City. COMMODITY PROFILE INTRODUCTION At the peak period for refinery throughput, the Delaware Valley.