Apex

Surge Tank

Apex , Well Testing has developed its own set of fabrication specifications to ensure that equipment used by Apex Petroleum Services, Well Testing meets or exceeds all local requirements. Apex Petroleum Services, Well Testing specifications are primarily based on the following worldwide recognised specifications:

Equipment Design and Fabrication Specifications

  • API Spec 6A – Specification for Valves and Wellhead Equipment
  • ASME VIII For construction of pressure vessels , Div 1&2
  • API RP 14C – Recommended Practice for Analysis, Design, Installation, and Testing of Basic Surface Safety Systems on Offshore Production Platforms
  • NACE MR-01-75
  • Product Specification Level (PSL) 3
  • Material Class DD
  • Temperature Class P&X (-20° F to +350° F)
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Surge Tank

The Apex Pressurized Test Tank is used to store produced liquids before they are disposed. It can also be used as an additional stage of separation.

Test tanks are manufactured for various volumes and may be made with twin compartments. They are made with the necessary inlet and outlet piping and a safety relief system where required. They have a manway for internal inspection and debris removal. Where required, the tanks have the necessary skid mounts for vertical or horizontal storage.

Pressure-containing tanks have a 50–250 psi working pressure. The tanks maintain the necessary back pressure on the transfer pump for production disposal systems. Pressure integrity of the tank is also important during H2S production since no venting to the atmosphere occurs under normal conditions.

Both compartments of the surge tank are equipped with sight glasses and calibration strips.

The pressurized test tank can be used as a second-stage, two-phase separator with the addition of necessary gas, fluid meter, and control valving. The test tank is very effective as a longer retention time is needed for good separation of gas and fluids.

Applications:

  • Onshore & Offshore well Testing
  • Extended Well Testing
  • Production Optimization

Features and Benefits:

  • Tank is pressurized, so no gases are vented to the atmosphere near the well test equipment

Vertical Surge Test Tank

  • Higher operating pressure allows higher rates and pressures when the tank is used as an additional stage of separation
  • Standard ISO shipping container sized skid, which reduces shipping costs
  • Features magnetic level indicators for increased safety and convenience; contains no glass
  • Can be third-party certified in accordance with requirements
  • High and Low Level Alarm on each compartment

Operation:

The test tank shown is designed to operate at 50-250 psi maximum allowable working pressure. The skid and frame are made of box beam rather than I-beam for durability and safety.

The pressurized tank provides a closed system when well testing.

Vertical Surge Test Tank
Horizontal Surge Test Tank

* Meets requirements of NACE MR-01-75

NOTE: Other sizes, configurations, and pressure ratings are available to meet most applications. These ratings are guidelines only. For more information contact your local Apex representative.