Nitrogen Fluid Combo Pumping Unit

Our combination nitrogen and fluid pumping unit was designed to meet a specific demand by our customers in the coiled-tubing service industry.


On many types of coiled tubing jobs, there are requirements for pumping both fluid and nitrogen, but not often in extremely large volumes. Previously, this required two separate pieces of equipment to be brought to the job site, even though one or the other might see limited use. This also usually meant an extra truck or trailer, an extra driver, and more time to rig-up two separate units, which added cost to the job.

Our units require only one piece of equipment to be brought to do the job of pumping both nitrogen and fluid. The fluid side of the unit consists of an independent power unit, triplex fluid pump, 10-bbl tank, two centrifugal pumps, and discharge manifolds. The nitrogen side of the unit consists of an independent power unit, liquid nitrogen storage tank, nitrogen boost pump, nitrogen triplex pump, water bath vaporizer, and discharge manifolds. Both the nitrogen and fluid sides of the unit are controlled from a common, climate-controlled cabin located on the unit. The unit is on a purpose-built drop-deck rail trailer for reduced weight and is equipped with storage accommodations for treating iron.


  • Chemical additive system features twin chemical feeder pumps, actuated valves, controls, and two 20-gallon chemical tanks
  • Standard, single-chamber fluid tub divider divided into two equal halves, and the plumbing is modified to enable "mix and slug" functionality
  • Remote control is custom configured to accommodate customer requirements for remote functionality

Nitrogen/Fluid Pumping Unit Specifications

Weight (includes all fluids)

63,500 lb

Dimensions (L × W × H)

516 × 101 × 157 in.

Fluid system maximum working pressure

15,000 psi

Fluid system flow rates

12–500 GMP

Nitrogen maximum working pressure

10,000 psi

  • Hydra Rig Nitrogen/Fluid Combination Pumping Unit Data Sheet

Side view of Nitrogen/Fluid Combination Pumping Unit

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