High Pressure Shielded Mild Detonating Cord

Product Description

The High Pressure Shielded Mild Detonating Cord (HP-SMDC) assemblies are explosive transfer lines, consisting of a metal sheathed explosive core contained in a stainless steel tube. These assemblies, specifically designed for use in the oil and gas industry, are rated to withstand an external high well bore pressure of 30,000 PSI. The Mild Detonating Cord (MDC) explosive used in the SMDC assemblies is a high-temperature explosive which allows the MDC to withstand temperatures up to 500°F for 50 hours without degrading the effect of the detonation characteristics.

High Pressure Shielded Mild Detonating Cord
Applications Specifications


High Pressure-SMDC is currently used in high-temperature, high-pressure environments where point to point initiation is required and fragmentation / post function containment is required to protect perforating guns and pipe severance sub-assemblies.

High Pressure Shielded Mild Detonating Cord Functions

High Pressure Shielded Mild Detonating Cords [HP-SMDC] are used as an initiation/energy transfer between explosive devices in high temperature and high-pressure extreme environments. The High Pressure-SMDC is a sealed device so it can provide energy transfer while submerged in the extreme environments.


  • Hermetic Seal
    ≤ 10-5 cc/sec (air)
  • Humidity
    100% of water or frost
  • Withstanding Pressure
    30,000 external hydrostatic pressure
  • Storage Temperature
    -80°F to +200°F
  • Operating Temperature
    -65°F to +500°F (500°F for 50 hours)
  • Vibration
    80 to 2000 cps +/- 20G
  • Shock
    3 shocks of 40G in any direction
  • Acceleration
    40G in any direction
  • Drop Test
    6 foot drop – operational
    40 foot drop – safe to handle
  • Plate Dent Test
    0.010 inch minimum dent depth in steel plate
    0.040 inch minimum dent depth in aluminum plate
  • Initiation
    No. 6 Blasting Cap or various qualified devices available
  • Transfer Gap
    0.02 inch to 0.10 inch, tip to tip

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