UltraFab™ Fuel Gas Solution
for Harsh Canadian Conditions

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UltraFab, A Nalco Champion Company
261088 Wagon Wheel Crescent
Rocky View, AB T4A 0E2 Canada

Want to know more? For additional information, please call +1 403-272-2688 or Email us at ultrafab@nalco.com.

SITUATION

Drillers in Northern British Columbia, Canada needed a reliable, cost effective fuel gas conditioning solution to alleviate the costly transportation and storage prices of diesel fuel.

Processing and delivering clean fuel gas was critical to the driller in order to protect equipment and ensure continuous operation. The solution had to remove all H2S from the pipeline source gas and dry the gas to ensure continuous flow to the engines during extended periods of cold weather.

ENABLING THE ENTIRE OPERATION TO RUN CONTINUOUSLY MADE THE RIG SITE AN INHERENTLY SAFER PLACE TO WORK.

SOLUTION

UltraFab™ developed a fuel gas conditioning solution that delivered a reliable supply of sweet, dry gas as supplemental fuel for engines, compressors, boilers and generators at the rig site. An UltraFab Flooded H2S Removal System was used to remove all H2S from the gas.

Moisture removal was accomplished using two stage desiccant dryers, with the vessels sized to handle maximum gas flow and a maximum of 20 lb/MMscf of H2O. A filter was installed downstream of the dryers to ensure that particulate matter did not enter the gas stream from the dehydrator contactors.

UltraFab systems reliably and cost effectively remove H2S using liquid triazine scavenger. The systems are designed to continuously treat natural gas streams by monitoring outlet H2S concentration to ensure that processed gas remains on-spec. Configurable alarms and shut down procedures were implemented and a manual H2S concentration monitor was included for observing inlet conditions, as necessary.

RESULTS

The UltraFab installation addressed several challenges for the operator. The primary benefit was a reduction in diesel costs, which paid for the equipment in less than six months. The solution also reduced environmental emissions since natural gas burns much more cleanly than diesel fuel.

The triazine formulation provided downstream corrosion protection while hydrate protection resulted from water and moisture removal. Enabling the entire operation to run continuously made the rig site an inherently safer place to work.

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