Core Product Series · 01

Oil & Gas Separators (Two-Phase / Three-Phase)

CGOT’s flagship product family: horizontal and vertical two-phase and three-phase separators, metering separators, cyclone, filter and high-efficiency vane separators, in single-vessel or skid-mounted execution. Processing capacity from 10,000 to 500,000 m³/d, design pressure 0.1–15 MPa, in carbon, stainless or duplex steel.

Working Principle

Multi-stage separation using centrifugal force, inertial impact and gravity settling. In three-phase units the density difference of oil, gas and water plus overflow-weir level control delivers clean separation of all three phases.

  1. Primary separation: the inlet diverter abruptly redirects the flow; large droplets settle by inertial impact while gas carries fines onward.
  2. Settling section: oil and water stratify by gravity, forming a stable oil–water interface; oil floats, water sinks.
  3. Deep purification: a vane-pack mist eliminator captures micron-scale droplets; oil and water discharge through independently controlled overflow weirs.

Application Scenarios

  • Oilfield production: crude dehydration and oil–gas–water three-phase separation, including heavy-oil and high water-cut fields (e.g. Shengli Oilfield service).
  • Natural gas treatment: removal of liquid hydrocarbons and free water to pipeline gas-quality specifications.
  • Gathering stations: integrated processing of wellhead streams, optimising field gathering and transport systems.
  • Well testing: metering separators measure single-well oil, gas and water rates with built-in P/T compensation.

Product Advantages

High separation efficiency with vane-pack internals

Corrosion-resistant, long service life

Stable, reliable operation

Easy maintenance; skid execution installs 70% faster

Product Range

Horizontal separatorHorizontal three-phase separatorHorizontal two-phase separatorVertical separator / vertical two-phase separatorMetering separator (well testing)High-efficiency gas–liquid vane separatorCyclone separatorFilter separatorSkid-mounted separator & metering packages

Customisation Envelope

Processing capacity10,000 – 500,000 m³/d
Design pressure0.1 – 15 MPa
MaterialsCarbon steel / stainless steel / duplex steel
ConfigurationHorizontal or vertical; two-phase or three-phase; vessel or skid

Frequently Asked Questions

Can separators be customised for offshore FPSO service?

Yes. Skid-mounted separators are engineered for space-constrained, highly corrosive offshore environments, including FPSO units, with materials and layouts adapted to marine service.

What does full-parameter customisation cover?

Separator type (horizontal/vertical, two/three-phase), capacity (10,000–500,000 m³/d), materials (carbon/stainless/duplex steel) and working pressure (0.1–15 MPa), plus controls and instrumentation integrated on a single skid.

Related Products

Manufactured by Dongying Chenggong Petroleum Technology Co., Ltd. under Class A2 pressure-vessel and ASME qualifications.