Vacuum Degasser are used to remove the small entrained gas bubbles left in the mud by the mud/gas separator. These units are positioned downstream from mud/gas separators, shale shakers and mud cleaners, while hydrocyclones and centrifuges follow in the arrangement. Operational Theory: Vacuum degasser utilize negative pressure by vacuum pump to withdraw entrained gases from the mud. In order for this to work, mud is pumped through a venturi, which develops a negative pressure in the vessel by vacuum pump, thus sucking mud into the unit. The choice between horizontally- or vertically-mounted units is typically based on the footprint requirements of the specific rig. Features and Advantages: 1.Scientific reasonable design for structure,it can get effective gas fluids separation,filter out impurities to guarantee vent pipe always clear. 2.Adopt belt drive,avoid the complication of the reducing gear,ensure the long working time without trouble. 3.Water circle type of vacuum pump is always at a constant temperature,apply to pump the flammable and explosive. 4.High degassing efficiency,up to 95%. 5.There is gas-water separator in vacuum degasser,which can avoid the gas and fluids are all removed together,and also can supply water for vacuum pump,saving water and environment-friendly