Mud Gas Separator

Mud Gas Separators handle a high proportion of mud solids and may experience hydrate plugging as a result of gas expansion through choke. The proven design of our Mud Gas Separator is based upon the conventional process practice, which involves a liquid seal system matched to an adequate gas vent.

The liquid seal ensures that separated gas vents safely without breaking through to the mud tanks. Should the drilling rig require a more compact solution, Task Products can offer a trip tank based liquid seal design, whereas the trip tank can be used as a liquid seal. Alternatively, the seal may be in the form of an external U-tube arrangement.

Performance Features

  • Maximises free gas/ mud separation
  • Unique U-shaped
  • Ensures a positive fluid seal
  • Maintains safe mud levels
  • Superior baffle arrangement
  • Allows expansion and diffuses downstream pressure

We can supply vertical or horizontal Mud Gas Separators, both of which are fitted with internal baffles and distribution nozzles. However, the overall performance of the liquid seal is independent of these design features.


  • Temperature rating: -40 to 75″C
  • Pressure rating: up to 15 bar
  • Instrument connection: Yes (2″ ANSI 150# flange)
  • Area classification: Zone 2
    (Zone 1 optional, available on request)
  • Ventline size: Up to 12″
  • Outlet size: Up to 10″
  • Dimensions (prelim): Based on rig requirements
  • Third party certification: Optional, available on request
  • Separator capacity: Based on rig requirements
  • Design Code: ASME VIII div 1 and NACE MR-01-75
  • Certification- PED (not mandatory),
    CE Marked, ATEX Zone 1
  • Manway: 2 of 26″
  • Main Body Diameter (mm/in) : up to 1400/55
  • Treating Capacity (m3/h/GPM) : up to 240~320/1056~1408
  • Capacity Inlet Pipe (min/in) : up to 125/5
  • Output Pipe (min/in) : up to 250/10
  • Gas Discharge Pipe (min/in) : up to 200/8
  • Seal Monitor- third party supply kit


  1. Mud/Gas Separator Sizing and Evaluation by GR MacDougall, SPE, Chevron Canada Resources Ltd
  2. API Spec 12J – Specification for Oil and Gas Separators, Eight Edition
  3. BP DWO Document Fundamentals of Well Control (BPA-D-002V2) Section 6 Mud Gas Separator
  4. Design principles of Mud Gas Separators; Appendix to Safety Notice 11/90 (UKCS HSE Safety Notice)
  5. Method of handling Gas Kicks Safely in High-Pressure Wells by Eric Low, SPE, and Case Jansen, Deminex UK Oil and Gas Ltd
  6. IADC/SPE 27500 Mud Gas Separator response to Well Control Procedure by MD Williamson and RA Dawe, Imperial College of London
  7. IADC/SPE 13485 Design of Atmospheric, Open-Bottom Mud Gas Separators


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General Arrangement Drawing EN
Schematic Diagrams EN
Equipment Block Logic Diagrams EN
3D CAD Model EN
Product Datasheet EN
Erection and Installation Procedures EN
Storage and Preservation Procedure EN
Slinging/Lifting Arrangement EN
Quality Management Certification EN
Quality Plan & ITP EN
Third Party Release Note / Waivers EN
EC Declaration of Conformity EN
Operating &  Maintenance Manual EN