HULK SAND-X: Protect Your ESP During Shutdown from Solids

The patented Sand Stop technology featured in SAND-X makes this the only fallback tool on the market capable of preventing sand from entering your ESP in all three stages of shutdown. Patent #: US11939991

HULK SAND-X FACTS

  • Patent #: US 11939991

  • 100% Stainless 13Chrome

  • Factory Acceptance Tested to 5000 psi​

  • Flow rates up to 6000 BPD​

  • Temperature rating 400°F ​

  • Flow-back tested

ESP Fallback Challenges

Sand Fallback​

  • During shutdowns, sand will fall and collect in the stages of the ESP​

Can cause instant failures ​

  • Potential to lock pump or break the shaft, preventing restart- requires immediate workover​

Causes stage degradation due to sand wear​

  • Reduced head​

  • Poor gas handling​

  • Hotter equipment temperatures​

Increased prevalence of 100 mesh sand (.006" diameter) makes this all more damaging​

SAND-X Advantages During ESP Shutdown

Equalization​

SAND-X has a patented lower end, "Sand Stop," that allows fluid to flow through the restrictor while simultaneously separating the sand, thereby allowing clean fluid to backflow through the ESP.​

Fallback​

SAND-X has a large internal chamber capable of housing the sand during the equalization and fallback phases. These stages provide a defense against pack off and support the sand in preparation for flushing it out during restart.​

Restart​

During restart, fluid flow now reverses direction and begins to flow up the tool. The patented lower restrictor functions as its own clean system. Since the stages had already eliminated the risk of pack off, the patented lower assembly and chamber act in concert to flush out the sand and ensure the ESP can return to full production.​

 sand-x FAQs

  • Zero 40/70-mesh sand and less than 5 grams of 100-mesh sand passed through our tool during our latest pressure testing. 

  • Everything is 100% 13Chrome. High strength SS.

  • SAND-X is anchored to the head and the top of the cage, with a dampening mechanism in the middle of the shaft to keep it put. ​

  • 80 cups of sand

  • Two separate patents on SAND-X:​

    • The Restart Stages on the shaft  break up sand in the chamber during restart. When the tool fills up with a column of sand, the Restart Spirals break up the bridge and allows the tool to flush completely in four seconds.​

    • Sand Stop prevents sand from passing into the ESP during equalization and fallback. Sand Stop is a bypass for fluid.​

    • At 6000 BPD, the back pressure of SAND-X is 50 psi ​

    • At 4000 BPD, the back pressure of SAND-X is 35 psi​

    • Tested up to 13000 BPD​

SAND-X has been designed and manufactured by HULK and is ready for your application.

CONTACT HULK TODAY TO GET OUR INDUSTRY-LEADING SAND FALLBACK PREVENTER TECHNOLOGY