Oil & Gas Skids – Modular Process Systems

Engineered for High Reliability, Safety, and Global Compliance

Oil & Gas Process Skid Systems

Introduction

Our Oil & Gas skid packages are engineered for high reliability, operational safety, and compliance with global standards (API, ASME, ISO, NEC, ATEX, NACE, OISD & IECEx). Each skid is fully integrated, factory-tested, and supplied as a plug-and-play module to reduce installation time at site and ensure seamless process performance.

At NORDSTONE., we combine advanced 3D engineering, process simulation, FEA/CFD analysis, hazardous area design, and modular fabrication to deliver high-performance skids for upstream, midstream, and downstream applications.

What are Oil & Gas Process Skids?

Process skids are pre-engineered, pre-assembled modular systems that integrate various equipment, instrumentation, and controls into a single transportable unit. Designed for specific oil and gas processing functions, these skids offer faster deployment, reduced field installation costs, and guaranteed performance.

Key advantages include:

  • Reduced field construction time and costs
  • Factory testing ensures quality and performance
  • Standardized designs with customization options
  • Compact footprint with optimized layout
  • Integrated safety and control systems
  • Compliance with international standards
  • Easy transportation and installation

Our skid packages are engineered to operate reliably in harsh environments while meeting stringent safety and environmental regulations.

Oil & Gas Process Skid Packages

LACT

LACT Unit

Lease Automatic Custody Transfer – Accurate measurement and transfer of crude oil between production and pipeline/storage with fiscal accountability.

  • API MPMS compliant measurement system
  • Positive displacement or coriolis meters
  • BS&W monitoring & automatic diversion
Technical Expertise:

Meter Proving Systems, Flow Computer Integration, SCADA/RTU Communication, Class 1 Div 1/2 hazardous area design

FMS

Fiscal Metering Skid

High-accuracy gas or liquid metering for custody transfer and fiscal settlement.

  • Ultrasonic, turbine, coriolis, or PD flow meters
  • AGA-compliant design
  • Flow computers with redundancy
Technical Expertise:

AGA-8, API MPMS, ISO 5167 compliance, Uncertainty analysis & validation, Dual redundancy instrumentation

GMS

Gas Metering Skid

Measurement and regulation of natural gas in pipelines, power plants, refineries, and processing units.

  • Multi-run metering headers
  • Flow conditioners & filters
  • Ultrasonic/Turbine/Orifice metering
Technical Expertise:

ASME B31.8/31.3 piping, Hazardous area instrumentation, Gas quality measurement (H₂S, CO₂, moisture)

PRMS

Gas Pressure Reducing Skid

Reduce pipeline gas pressure to downstream process requirement with precision and safety.

  • Primary & standby pressure regulators
  • Over-pressure relief systems
  • Pre-heaters to avoid freezing
Technical Expertise:

Compliant with OISD-226 / PNGRB standards, Designed for severe pressure fluctuations, Integrated SCADA/ESD control

LPG/LNG

LPG/LNG Transfer Skid

Safe transfer of LPG/LNG between storage, tanks, trucks, and process equipment.

  • Cryogenic or pressurized transfer pumps
  • Vapour return lines
  • Batch controllers & flow metering
Technical Expertise:

Cryogenic material selection, API 625 / NFPA 58 compliance, Low-temperature stress & FEA analysis

GS

Gas Scrubber Skid

Remove particulates, liquid droplets, and contaminants from gas streams.

  • Vertical/Horizontal scrubbers
  • Vane pack, demister pad, or cyclone separators
  • High-efficiency coalescing cartridges
Technical Expertise:

ASME Section VIII Div.1/2 design, CFD-based separation optimization, Sour-service (NACE MR0175) compliance

KOD

Knock-Out Drum Skid

Capture liquid slugs and large droplets from gas streams to protect downstream compressors and process equipment.

  • High-volume surge capacity
  • Inlet diverters & vane pack demisters
  • Dual redundant level controls
Technical Expertise:

Transient surge analysis, Wet gas flow CFD modeling, API 12J design lifecycle

SC

Slug Catcher Skid

Manage severe liquid slugs in pipelines, especially in upstream production.

  • Finger type or vessel type design
  • High-volume gas-liquid separation
  • Hydrocarbon recovery system
Technical Expertise:

Pipeline transient flow simulation, High-pressure design up to 15000 psi, Sour gas service material engineering

PWT

Produced Water Treatment Skid

Treat produced water from oil & gas production to meet reinjection or disposal standards.

  • Hydrocyclones
  • Induced Gas Flotation (IGF)
  • Walnut Shell Filters
Technical Expertise:

Achieving <10 ppm oil-in-water, API 12B/12J/12F separation design, PLC/SCADA process control automation

API

API Separator Skid

Separate oil, water, and sludge using gravity-based separation.

  • API 421 compliant design
  • Parallel or corrugated plate packs
  • Skid-mounted sludge handling modules
Technical Expertise:

Hydrocarbon spill prevention, Enhanced gravity separation design, Corrosion-resistant material selection

FOT

Fuel Oil Transfer Skid

Transfer and pressurize diesel, furnace oil, or heavy fuel oil for engines, boilers, and heaters.

Design Features:
  • Duplex filtration units
  • Positive displacement or centrifugal pumps
  • Flow & temperature control
  • Viscosity control system for heavy oils
Technical Expertise:
  • UL, NFPA, PESO compliance
  • Thermal tracing & heating systems
  • Pump NPSH optimization
  • Pressure surge control & analysis

Key Features of Oil & Gas Process Skids

High Reliability & Safety

  • Fail-safe shutdown & ESD systems
  • Overfill protection (API 2350)
  • Hazardous area classification compliance

Global Standards Compliance

  • API, ASME, ISO standards
  • NEC, ATEX, IECEx certification
  • NACE, OISD compliance

Advanced Engineering

  • Advanced 3D modeling & simulation
  • FEA/CFD analysis
  • Process simulation & optimization

Plug-and-Play Delivery

  • Factory assembled and tested
  • Reduced site installation time
  • Pre-commissioned for quick startup

Process Integration

  • Complete EPCM capability
  • Integrated control systems
  • SCADA/RTU communication

Material Expertise

  • Sour service materials (NACE)
  • Cryogenic material selection
  • Corrosion-resistant alloys

Engineering & Design Capabilities

Process Design

  • PFD & P&ID development
  • Process simulation & optimization
  • Equipment sizing & selection
  • HAZOP & SIL studies

Mechanical Design

  • 3D modeling & detailing
  • FEA stress analysis
  • CFD flow analysis
  • Vibration & surge analysis

Standards Compliance

  • API: 12J, 12F, 2350, MPMS, 625
  • ASME: B31.3, B31.8, Section VIII
  • Hazardous Areas: ATEX, IECEx, NEC
  • Others: NACE, ISO, OISD, PNGRB

Industry Applications

Upstream
  • • Wellhead production skids
  • • Production separation
  • • Produced water treatment
Midstream
  • • Pipeline metering stations
  • • Compressor stations
  • • Pressure reduction stations
Downstream
  • • Refinery process skids
  • • Tank farm automation
  • • Terminal loading systems

Quality Assurance & Testing

All oil & gas process skids undergo rigorous QA/QC procedures:

Factory Acceptance Testing
  • Hydrostatic pressure testing
  • Pneumatic leak testing
  • Functional testing of all systems
Performance Testing
  • Meter calibration & proving
  • Control system simulation
  • ESD system validation
Certification & Documentation
  • Material traceability (MTC 3.1/3.2)
  • NDT reports (RT, UT, PT, MT)
  • Third-party inspection certificates

Integrated Systems & Controls

  • SCADA/PLC/DCS control systems
  • Emergency shutdown (ESD) systems
  • Fire & gas detection systems
  • Flow computers & batch controllers
  • Gas chromatograph integration
  • Remote monitoring & telemetry
  • Hazardous area electrical design
  • Power management & UPS systems

Why Choose NORDSTONE for Oil & Gas Skids?

  • Complete EPCM Capability: Process, Mechanical, Piping, Instrumentation, Electrical & Automation
  • Robust Engineering: 3D modeling, FEA, CFD, surge & vibration analysis
  • Global Standards Compliance: API, ASME, NACE, CE, ATEX, IECEx, OISD
  • Modular Fabrication Expertise: Shop-assembled, pre-tested, plug-and-play delivery
  • Comprehensive Industry Coverage: Upstream, Midstream, Downstream, Refining, Petrochemicals, Terminals, Pipelines
  • Quality Assurance: Factory acceptance testing, NDT, material traceability
  • Technical Support: Commissioning, training, and after-sales service
Utility Skids Chemical & Petrochemical Skids
Ready to Discuss Your Oil & Gas Skids Requirements?

Contact our engineering team for custom solutions and quotations.

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