drilling rig, workover rig, drilling rig parts, mud pump, solid control equipments Rongli Product Catalogue Rongli Petroleum ... control equipment includes centrifuges, shale shakers, desanders, degassers, desilters, mud cleaners, agitators, gas-liquid separators, shearing pumps, and sand pumps ... manner so that they don't need to postpone their drilling or workover activities. Oil Drilling Equipment