HOUSTON, April 15 (Reuters) - Royal Dutch Shell Plc's275,000 barrel-per-day (bpd) joint-venture Deer Park, Texas,refinery returned to normal production on Friday, sourcesfamiliar with plant operations said on Monday.
The Deer Park refinery cut production following a March 22chemical spill in the upper Houston Ship Channel and came withindays of shutting down due to constrained crude shipments.
(Reporting by Erwin SebaEditing by Chizu Nomiyama)