GAS PROCESSING SKIDS
NGL recovery. LNG liquefaction. Associated gas utilization. Complete modular gas processing systems -- engineered, fabricated, and FAT-tested by one supplier.
Three Gas Processing Opportunities -- One Integrated Supplier
Associated gas from oil production was historically vented or flared -- a waste of resource and, increasingly, a regulatory and ESG liability. NGL recovery and LNG liquefaction technology now makes it economically viable to capture, process, and sell this gas as LNG, LPG, or NGL products. LINSON OIL has delivered systems that do exactly this -- at scale, internationally, across multiple project phases.
Associated Gas Recovery: From Flare to Product
Oilfield associated gas is one of the most underutilised resources in upstream production. A modular associated gas recovery system converts a liability into a revenue stream by capturing the gas, removing liquids, and compressing for pipeline injection, liquefying for road tanker export, or recovering NGL products.
NGL Recovery: Propane, Butane, and Stable Light Hydrocarbons
Natural gas liquids are higher-value products than pipeline gas. NGL recovery extracts heavier components, separating them into saleable products: propane, butane, and stable light hydrocarbons. LINSON OIL delivered NGL recovery systems producing these streams for the Jiarou Oilfield project (Phase I: 100×10⁴ Nm³/d, Phase II: 200×10⁴ Nm³/d).
Small and Mid-Scale LNG Liquefaction: Stranded Gas Monetisation
In locations without pipeline infrastructure, LNG liquefaction makes gas monetisation possible. Small-scale LNG plants can be built as modular skids, transported, and commissioned quickly. LINSON OIL delivered 200×10⁴ Nm³/d total LNG production capacity for a greenfield oilfield in Central Africa.
Associated Gas Compression for Pipeline Injection
For smaller volumes or locations near a pipeline, boosting pressure is the most direct route to utilisation. LINSON OIL supplies integrated gas compression skids incorporating scrubbers, compressors, coolers, and control systems that interface directly with upstream separators.
Congo (Brazzaville) -- Jiarou Oilfield, Phase I / II / III
Associated gas recovery and LNG liquefaction system delivered across three project phases: Phase I -- 100×10⁴ Nm³/d NGL recovery; Phase II -- 200×10⁴ Nm³/d gas recovery + 100×10⁴ Nm³/d LNG liquefaction; Phase III -- 100×10⁴ Nm³/d gas recovery + 100×10⁴ Nm³/d LNG. Products: propane, butane, stable light hydrocarbons, LNG.
Gas Processing -- From Wellhead Gas to Saleable Product
LINSON OIL designs and fabricates the complete processing train as an integrated modular system.
Associated gas from an oil separator or wellhead arrives as a mixture of methane, ethane, propane, butane, heavier hydrocarbons, water vapour, CO₂, H₂S (if present), and potentially mercury. Before any valuable product can be extracted, it must pass through a sequence of conditioning and separation steps.
Inlet Separation and Liquid Knockout
Gas from the separator first passes through an inlet scrubber to remove free liquid -- condensate, water, and entrained oil. This protects downstream equipment from liquid ingestion.
Gas Compression (if required)
If inlet pressure is below downstream requirements, compressor skids raise the pressure. Designed to integrate directly with the downstream process train.
Gas Dehydration
Water must be removed before NGL recovery or LNG liquefaction. LINSON OIL supplies both TEG dehydration contactors (moderate dew point) and molecular sieve dryer skids (cryogenic duty to below 1 ppmv).
NGL Extraction
Light hydrocarbons (C2+) are extracted using either refrigeration (chilling to condense C3+) or turboexpander processes (dropping to -120°C for higher recovery rates).
NGL Fractionation
A fractionation column train separates raw NGL into individual products: deethanizer removes ethane, splitter separates propane/butane, and bottoms form stabilised condensate.
LNG Liquefaction
Lean gas is liquefied by cooling to -162°C. LINSON OIL's systems use mixed refrigerant cycles. Cold box, compressors, and storage are integrated into the skid package for road tanker loading.
Mercury Removal (If Required)
For mercury-bearing reservoirs, a guard bed protects downstream aluminium heat exchangers. Our 2025 First-of-its-Kind equipment integrates this with dehydration.
System Specifications -- Key Design Parameters
| Parameter | Standard / Achieved Range |
|---|---|
| Inlet Gas Flow Rate | 1×10⁴ - 300×10⁴ Nm³/d (Multi-train for larger) |
| Inlet Gas Composition | C1-dominant with C2-C5+ / variable H₂S and CO₂ |
| NGL Recovery Rate | C3+ recovery: 90%+ (refrigeration) / 95%+ (turbo) |
| LNG Production | 1×10⁴ - 100×10⁴ Nm³/d per train |
| LNG Specification | > 96% CH₄ purity; water < 1 ppmv; CO₂ < 50 ppmv |
| NGL Products | Propane / Butane / Stable light HC / Ethane (optional) |
| Dehydration Method | TEG / Molecular sieve (cryogenic duty) |
| Inlet Pressure | 0.5 - 8.0 MPa (g) |
| Design Standards | GB 150 / ASME B31.3 / API (ASME dual cert avail.) |
Modular System Configuration
Conditioning & Compression
Inlet scrubber, filter separator, metering, compressor unit, cooler, discharge separator.
NGL Fractionation
Deethanizer, propane-butane splitter, reboilers, reflux systems.
Storage & Utility
LNG storage, vaporiser, loading arm, power generation, instrument air, control building.
What LINSON OIL Delivers
For gas processing projects where LINSON OIL acts as the primary equipment supplier under an EPC supply model:
Process Engineering
Composition analysis, process simulation (NGL/LNG yields), PFD, H&MB, equipment sizing, and process guarantee basis.
Mechanical Engineering & Fabrication
Pressure vessels (GB 150 / ASME VIII), heat exchangers, process columns, GC2 pipe spools, and structural skid frames.
Integration, Control & FAT
Rotating equipment integration, P&ID, PLC programming, per-module FAT, and integrated system logic testing.
Export & Commissioning
Export crating, full documentation, logistics coordination, and field start-up engineers available.
Cooperation Models
- Full EPC Supply You provide gas data; we deliver the system.
- FEED + Fabrication We build and test to your engineering package.
- Modular Supply Fabrication of specific modules from datasheets.
- Long-term Framework Pre-agreed specs and production slots.
We Have Built These Systems. Internationally. At Scale.
The Congo (Brazzaville) Jiarou Oilfield project is not a domestic demonstration -- it is an internationally delivered, multi-phase gas processing system in Central Africa, commissioned and operating.
Congo Brazzaville -- Jiarou Oilfield
Phase I: 100×10⁴ Nm³/d NGL recovery. Phase II: 200×10⁴ Nm³/d gas recovery + 100×10⁴ Nm³/d LNG. Phase III: 100×10⁴ Nm³/d gas recovery + 100×10⁴ Nm³/d LNG. Full technical and logistical scope managed by LINSON OIL.
CNOOC Wushi Oilfield -- Onshore Terminal
Scope included LNG liquefaction, crude oil dehydration, gas stabilisation, and mercury removal -- complete onshore terminal processing of production from offshore Wushi oilfield.
Sinopec Northwest Bureau -- Shunbei No. 5
Molecular sieve dehydration skid for Shunbei Ordovician reservoir gas -- the critical upstream conditioning step protecting downstream cryogenic processing and compression equipment.
Key Credentials & Certifications
Associated Gas. Stranded Gas. Tell Us the Volume.
Send us your gas analysis and product target. Our process engineers will return a preliminary system configuration, product yield estimate, and relevant project reference within 48 hours.
Submit your data and receive:
- Preliminary process route recommendation (NGL recovery, LNG cycle, dehydration)
- Indicative product yield estimate (LNG Nm³/d, NGL tonnes/day)
- Congo Brazzaville project reference summary matched to your parameters