Dual-Pot Sand Filter Type B rendering

Dual-Pot Sand Filter Type B

Separates sand and other solid particles from the well stream

Product summary

Wellhead sand filtration is established as an industry standard technique for sand and solids removal upstream of the choke manifold during well testing, frac-flowback and well clean-up operations.

The Hunting Dual Pot Sand Filters are available in a broad range of sizes and configurations, up to 20,000psi WP, all of which are in service globally with major production testing companies.

The principle of sand filtering is well understood, with the minimum size of the separated sand particles determined by the slot size in the sand filter in each pot which are available in a range from 100 to 800 microns. Continuous operation is achieved by switching the flow between the two pots and draining the collected sand from the bottom of the pot that is isolated from the flow. The Type B Sand Filter is configured for the well to flow through the sand filter from the outside with the sand the collecting in the annulus between the vessel and filter.

The Sand Filter can be flushed be using a 2” line connection mounted on the inlet piping of vessel. The water flushes the outside diameter of the screen into a 2” drain line for collection of the solids.


  • Separates sand and other solid particles from the well stream

  • Dual pot system with high pressure by-pass and dual isolation valves

  • Switching flow between pots for continuous sand removal

  • Telescopic lifting support for convenient filter replacement

  • Quick union on pot vessels for rapid filter replacement & maintenance

  • Optional water jet sand flushing system

  • Optional Sandbox for sand disposal


  • Simple to operate

  • Eliminates erosion on choke manifold and downstream process equipment

  • Enables high rate well testing

  • Allows representative sand sampling and sand production rate estimation

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