Surge Tank

Surge Tank

Vertical surge tank is the part of the well test system, designed to perform the function of secondary separation after test separator, as well as the storage of the produced liquids and gases from the test separator. Surge tank can be classified as single-compartment and twin compartment based on the requirements of well testing operator. In well testing, surge vessel usually consists of pressure vessel (usually sour service), sight glasses (level indicators), pressure and temperature indicators, relief valves, level alarm system, and skid. Some clients might require pressure control valves as the part of the skid vale and piping. In some areas with high presence of waxy substances, the vessel of the surge tank is designed with steam-heated heating coils to ensure proper temperature for further oil transferring. Frames (skid) of the surge tank is required to be designed as per DNV standard and shall be approved by this agency in some operation areas.

https://www.hcpetroleum.hk/imgs/products/Vertical_Surge_Tank_HC_Petroleum_Equipment_1.jpg

Surge tank is filled by the fluids coming from the test separator and further delivered to the gauge tank or directly to the flare for further disposal. Unlike the gas of test separator, gas of surge vessel usually disposed through the vent pipe, which is installed far from the operation personnel to avoid casualties.

In some offshore platforms, the surge tank replaces the atmospheric gauge tank, and shall comply with DNV requirement based on local requirements to the certification. Pressure vessel is designed as per ASME standard with ANSI flange connection.

  • Application:
  • Well Testing
  • Well Clean-ups
  • Frack Flowback
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Technical drawings

Technical Parameters

HC Model Number Capacity Compartment Numbers Service Pressure Working Pressure Inlet Gas Outlet Water Outlet Oil Outlet Code
HCWT-ST-50-1-150 50 bbl 1 Sour service 150 Gravity 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO ASME, NACE ANSI, DNV (for offshore)
HCWT-ST-50-1-250 50 bbl 1 Sour service 250 Gravity 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO ASME, NACE ANSI, DNV (for offshore)
HCWT-ST-50-1-2502 50 bbl 2 Sour service 150 Gravity 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO ASME, NACE ANSI, DNV (for offshore)
HCWT-ST-50-1-251 50 bbl 2 Sour service 250 Gravity 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO ASME, NACE ANSI, DNV (for offshore)
HCWT-ST-100-1-150 100 bbl 1 Sour service 150 Gravity 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO ASME, NACE ANSI, DNV (for offshore)
HCWT-ST-100-1-151 100 bbl 1 Sour service 250 Gravity 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO ASME, NACE ANSI, DNV (for offshore)
HCWT-ST-100-2-251 100 bbl 2 Sour service 250 Gravity 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO ASME, NACE ANSI, DNV (for offshore)
HCWT-ST-120-1-150 120 bbl 1 Sour service 150 Gravity 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO ASME, NACE ANSI, DNV (for offshore)
HCWT-ST-120-1-151 120 bbl 1 Sour service 250 Gravity 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO ASME, NACE ANSI, DNV (for offshore)
HCWT-ST-120-2-150 120 bbl 2 Sour service 150 Gravity 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO ASME, NACE ANSI, DNV (for offshore)
HCWT-ST-120-2-1502 120 bbl 2 Sour service 250 Gravity 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO 3 inch ANSI 602 WECO ASME, NACE ANSI, DNV (for offshore)

Surge tank for trailer-mounted well test package

Production Photos

  • https://www.hcpetroleum.hk/imgs/products/Vertical_Surge_Tank_HC_Petroleum_Equipment_2.jpg
  • https://www.hcpetroleum.hk/imgs/products/Vertical_Surge_Tank_HC_Petroleum_Equipment_3.jpg
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  • https://www.hcpetroleum.hk/imgs/products/Vertical_Surge_Tank_HC_Petroleum_Equipment_6.jpg
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