CANADIAN NITROGEN SERVICES LTD.

OUR OPERATIONS

OPERATIONS

  • Designed for Arctic and Desert Conditions​
  • Falls Under 75% Road Ban Limits​
  • Well Clean-Outs​
  • Underbalanced Drilling​
  • Pipeline Pigging​
  • Smart Pigging​
  • Pipeline and Vessel Purging​
  • Pipeline and Vessel Drying​
  • Pipeline and Vessel Pressure Testing​
  • Pipeline and Vessel Abandonment / Decommissioning​
  • Pipeline Facility Maintenance​
  • Plant turnaround

APPLICATIONS FOR NITROGEN

Nitrogen purging is an industry standard technique for the replacement of a hazardous or undesirable atmosphere with an inert dry atmosphere.
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Using nitrogen offers a number of advantages for drying operations. Membrane nitrogen contains only trace quantities of moisture, making it very effective in drying operations (nitrogen gas dew point is between -80°F and -90°F [-62°C and -67°C]). Nitrogen provides an inert atmosphere for long-term preservation once the drying process is completed. This environment reduces oxidation and no purge is required after drying is complete. Nitrogen also provides timesavings since it can be used to rapidly pressurize a system.
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During refinery shutdown, it is desirable to reduce the temperature of process catalysts as quickly as possible. Large volumes of nitrogen can be pumped by CNS’s pumping equipment to assist in the cooling process and save valuable hours of shutdown time.
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In some circumstances, when hydrostatic testing is not possible, components or systems may be tested with nitrogen. However, system design specifications must be reviewed and a detailed risk analysis completed before testing with a compressible medium.
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Nitrogen is used in well applications to reduce the weight of fluid in the wellbore. Nitrogen is pumped through coiled tubing (or gas lift tubing) and discharged at the well perforations. As the nitrogen gas flows up the production casing, it expands and reduces the weight of fluid in the column, allowing the well to flow.
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