OILFIELD EQUIPMENT, NAMELY SELF-PROPELLED WORKOVER AND DRILLING RIGS, SKIDDED WORKOVER RIGS FOR PLATFORM USE, TRAILER MOUNTED WORKOVER AND DRILLING RIGS, WELL SERVICING PUMPS, SERVICE/WORKOVER RIG MASTS, FREE STANDING DRILLING RIG MASTS, DRAWWORKS, SUBSTRUCTURES, CARRIERS AND MUD SYSTEMS, NAMELY SHAKERS, DESANDERS, DESILTERS, CENTRIFUGAL PUMPS, CENTRIGUES, SAND TRAP DUMPS, HAMMER BAR DUMPS AND MUD GUNS