Southwestern Energy to Again Test Brown Dense by Mark Friedman Posted 8/19/2013 12:00 am Unsuccessful attempts to strike oil in the Brown Dense formation in Arkansas aren't stopping Southwestern Energy Production Co. of Houston from trying again. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access articles older than 15 days. Articles newer than 15 days are not included in this offer. Purchase Now Already have archive access? Login to view this article.