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Ruptured Piston on Mud Pump leads to Pump House Fire

The rig was drilling at approximately 2030m with invert mud drilling fluid in the tanks, pumping with approximately 21,500 kPa pump pressure. At 14:00 hours it was noticed that smoke was coming out of pump house #1. The crew gathered all the fire extinguishers on site and attempted to extinguish the fire. The crew was unsuccessful, therefore, the Driller and Rig Manager shut-in the well. The fire spread to pump house #2, then over to the mixing area of the mud