Vacuum type is the most common form of degasser. It can be horizontal, vertical or round vessel. A vacuum action is created to pull in the gas cut mud. When the liquid enters the mud tank, it will flow and be distributed to a layer of internal baffle plates designed for the mud to flow in thin laminar film and is exposed to a vacuum that forces the gas to escape and break out of the mud. The vacuum pump moves the escaping gas from the vessel discharging it to the rig's flare or environmental control system.
Vacuum degasser is a special-purpose oil drilling fluids solids control equipment and a new type one for the drilling fluids system. Drilling fluids degasser can get rid of various gases invading drilling quickly. Drilling mud vacuum degasser is very important for returning mud gravity, stabilizing mud viscosity and reducing drilling cost. Also, at the same time oilfield vacuum degassing machine can be used as a heavy-power agitator and supported applicable to all types of drilling mud purification system. The drilling vacuum degassing unit design of the structure is scientific and rational. So we are able to achieve an effective gas-liquid separation, filter out impurities and to ensure that the exhaust pipe is always smooth.
Drilling fluids mud gas separator is the primary degassing equipment for disposing drilling fluids. Compared with vacuum degasser, the major difference is the mud gas separator is mainly used for eliminating the big bubbles whose diameter is larger than 3mm in drilling fluids. In addition, mud/gas separator is mainly by gravity impact action to realize the separation, and yet the vacuum degasser adopts the theory of vacuum, centrifugation.
The handling capacity of vacuum degasser is less than the mud gas separator, but can eliminate gas more thoroughly. Generally the drilling fluids disposed by mud/gas separator still contains minute bubbles, after through shale shaker, and enter into the vacuum degasser to dispose.
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