
BHAVANI DESIGN CONSULTANCY
PHONE: +91 9553747757
Mail: storagetanks@ mail.com

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Slug Catcher Design | CAD drawings & Design Services | Sandhya
20 Services Offered by Pressure Vessel Design Consultancy (Slug Catcher)
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Slug catcher process simulation and sizing
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Mechanical design per ASME/API/NACE
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Piping layout and nozzle load analysis
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Transient analysis (slug flow modeling)
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3D modeling and BIM integration
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Skid-based slug catcher package design
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Separator internals specification
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Material selection for sour and corrosive environments
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Foundation load data for civil design
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Erosion/corrosion protection planning
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Design of sand removal systems
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Instrumentation and control integration
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SCADA-ready automation design
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Inspection and testing (NDT, FAT, SAT)
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Design for modular transport and installation
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Pressure drop and surge validation
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HAZOP and safety integrity level (SIL) review
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Field support and commissioning supervision
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Retrofitting/upgrading existing slug catchers
Documentation: datasheets, P&IDs, GA, manuals
Slug Catcher Overview
A Slug Catcher is a static pressure vessel or piping system installed at the front end of a gas processing facility or pipeline to collect and temporarily store large volumes of liquid slugs (liquid surges) carried along in a gas pipeline. It protects downstream processing equipment from hydraulic shock or overflow.
🟦 2. Key Engineering & Equipment Topics
🔹 a. Piping
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Inlet manifold from pipeline or wellhead
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Gas outlet to separators or processing units
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Liquid outlet to storage tanks or knockout drums
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Bypass and drain lines
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High-pressure piping with pig receiver interface
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Erosion-resistant internal linings (for sand handling)
🔹 b. Civil Foundation
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Structural supports for large diameter vessels or piping
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Pile or raft foundation for finger-type slug catchers
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Load distribution pads for modular skids
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Earth grounding for lightning and static protection
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Spill containment bunding for liquids
🔹 c. Pumps
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Condensate transfer pumps
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Produced water disposal pumps
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Drain sump pumps
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Sand slurry pumps (if applicable)
🔹 d. P&ID Elements
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Inlet and outlet headers
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Instrumentation ports (level, pressure, temp)
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Sand removal line
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Emergency shutdown valves (ESDVs)
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Pig receiver interface (if upstream pipeline pigging involved)
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Drain and vent lines
🔹 e. Related Heat Exchangers
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Gas coolers or heaters (before or after slug catcher)
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Condensate heaters (to avoid wax crystallization)
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Intercoolers for gas recompression systems
🔹 f. Instrumentation
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Level transmitters and alarms
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Pressure transmitters on gas/liquid sections
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Temperature probes
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Flow meters (especially for liquid outlet)
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Sand accumulation sensors (if applicable)
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Remote monitoring system (SCADA/PLC)
🔹 g. Day & Temporary Storage Tanks
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Condensate storage tanks
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Produced water surge tanks
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Sand slurry collection tanks
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Emergency overflow tanks
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Temporary storage for cleaning or maintenance
🟦 3. Process Design Elements
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Liquid retention time based on expected slug size
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Inlet momentum and gas velocity control
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Phase separation efficiency
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Settling velocity of sand and solids
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High turndown ratio (must handle both trickle flow and large slugs)
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Safety factors for pipeline pigging operations
🟦 4. Mechanical Design Considerations
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Pressure design per ASME Sec VIII, Div. 1/2
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Materials to suit sour service (Hâ‚‚S, COâ‚‚ – NACE MR0175)
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Corrosion allowance (internal erosion protection)
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Vessel or piping type (horizontal vessel or finger-type)
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Large nozzle and header designs
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Seismic and wind load analysis
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Hydrotest and radiographic testing
🟦 5. 20 Slug Catcher Product Names / Model Styles
(Example/generic names for commercial or internal use)
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SlugTrap-X1000 – Horizontal vessel slug catcher
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FlowGuard-SC1500 – Finger-type slug catcher
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MegaSlug HC – High-capacity system
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SafeSlug V100 – Vertical slug trap
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SC-Flex Modular – Skid-based design
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StormCatcher-Pro – For high-slug volume areas
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GasMaster-SC700 – Inline slug catcher
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ArcticSlug VZ – Cold region design
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SlugFreeLine-SK – For pipeline pigging terminals
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MaxDrain SC Elite – Enhanced drainage system
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ZeroShock SlugNet – Hydraulic surge absorber
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PetroCatch X2 – 2-phase separator variant
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TurboTrap HP – High-pressure application
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QuickDump SlugMod – Rapid liquid evacuation
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DryGas CatcherLite – Dry gas system slug catcher
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SC-EcoSafe – Environmental protection integrated
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OilGrid-SC 3000 – Grid-based separation
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WellFront SlugBoss – Front-end processing
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WaveBreak HC100 – Shock wave attenuator slug catcher
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DualPhase SlugCare – 2-phase gas/liquid handling
🟦 6. 20 Applications of Slug Catchers
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Natural gas pipeline systems
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Offshore gas production platforms
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Gas gathering systems
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Sour gas processing facilities
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LNG plant front-end protection
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Gas compressor station inlets
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Pipeline pigging receiving stations
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High-flow slug-prone wells
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COâ‚‚ reinjection systems
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Onshore slug mitigation facilities
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Subsea gas tie-ins
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Remote wellhead manifolds
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FPSO gas riser inlets
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Fluctuating condensate-producing fields
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Emergency liquid surge protection
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Gas lift system separation
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Arctic flowline separation systems
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Gas dehydration system inlet
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Temporary well testing lines
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Sand-producing gas reservoirs
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