Metering Separator

Sanjack has more than 30 year’s experiences and equipped with class I, II & III pressure vessel production certificate. Leading products include tank, tower, furnace and structure parts. The annual production capacity is 10,000 tons.

  • In 1997, Sanjack obtained the Grade 3 installation qualification.;
  • In 2004, Obtained crane installation and maintenance license;
  • In 2005, obtained the B-class pressure pipe component manufacturing license
  • In 2007, we obtained the D-class pressure vessel design license
  • In 2008, we obtained the A-class boiler design and manufacturing qualification
  • In 2012, Sanjack has obtained ASME U&S qualification;

Metering separator is a crucial equipment in the oil and gas industry. It is used to separate the oil, gas, and water components of a wellstream before they are measured and processed individually.

The main function of a meter separator is to accurately measure the content of each component – oil, gas, and water – in a wellstream. The separation process is necessary because these components have different properties and require different treatment processes. By separating the wellstream into its individual components, the Metering separator  ensures that accurate measurements are made, and the appropriate processing steps can be taken.


The working principle of a Metering separator is based on the differences in physical properties of oil, gas, and water. The wellstream enters the separator and is guided through a series of baffles and plates, which create turbulence and promote the separation process. As the mixture flows through the separator, the heavier water droplets settle at the bottom, while the lighter gas rises to the top. The oil, being intermediate in density, separates between the gas and water layers. The separated components are then collected and directed to their respective processing units.

There are several types of Metering separator used in the industry, each designed for specific applications and operating conditions. One commonly used type is the horizontal separator. It is a cylindrical vessel with an inlet at one end and outlets for oil, gas, and water at the other end. The horizontal design allows for efficient separation and easy collection of the separated components. Another type is the vertical separator, which operates in a similar manner but with a vertical orientation. Vertical separators are often used when space is limited.

In addition to horizontal and vertical Metering separator, there are also two-phase and three-phase separators. Two-phase separators are used when there are only two components to separate, typically oil and gas. They are simpler in design compared to three-phase separators but still provide accurate measurements. Three-phase separators, as the name suggests, separate three components – oil, gas, and water. They are more complex in construction and require additional equipment, such as level controllers and control valves, to ensure accurate measurements and proper operation.

The design and operation of a Metering separator must take into account various factors, including the composition of the wellstream, flow rates, pressure, temperature, and the desired degree of separation. These factors can vary significantly depending on the specific well and the reservoir characteristics. Therefore, meter separators are often customized and engineered to meet the unique requirements of each well.

Metering separator is a vital piece of equipment in the oil and gas industry. It plays a crucial role in accurately measuring the individual components of a wellstream for further processing. The working principle of a meter separator is based on the physical properties of oil, gas, and water and involves a separation process facilitated by baffles and plates. There are different types of meter separators designed for various applications and operating conditions. The design and operation of meter separators are customized to meet the specific requirements of each well. With their accurate measurements and efficient separation capabilities, meter separators contribute to the overall productivity and profitability of the oil and gas industry.

Sanjack can customize products according to customer needs.



1). Sensitive to scaling;

2). Fast separation speed;

3). Advanced control system, high degree of automation, easy to operate;

4). Skid design, easy to lift and transport, saving transportation costs;

5). High security: Small containers bring high security;

6).Compact and reasonable structure design, integration of a variety of metering instruments and control equipment;

7).Compatible with various control modes (direct +PLC+ PC +DCS);.

  • Metering separator
  • Working pressure: 0.3 ~ 5MPa
  • Control method: manual
  • Nominal diameter: DN600 / DN800
  • Level display: magnetic level gauge


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