XBSY Sand Pump for Oilfield Drilling Mud and Solids Control Systems The XBSY Sand Pump is a heavy-duty centrifugal pump developed for continuous drilling fluid circulation and solids control applications in oil and gas drilling operations. It is designed to provide a stable supply of drilling mud to downstream equipment such as desanders, desilters, mud cleaners, and mixing systems . Built for handling drilling fluids containing abrasive sand and solid particles, the pump