Choose FourQuest

With our industry-leading fleet of equipment, experienced personnel and engineering capabilities we provide our clients the most efficient turnaround and maintenance programs, nitrogen when you need it, proven specialty chemicals, and a full range of pre-commissioning and commissioning services. You can trust us for all your industrial cleaning needs at oil and gas, refinery, petrochemical and many other industrial facilities across North America.

What others call specialization, we call standard.


Find FourQuest Across North America

We promote a safety first culture and excellence in our service quality.


Our “Quest for Zero” starts by integrating the safety mindset into all aspects of our employee’s actions, on and off the job. Our 10 Rules act as a reference for all of our employees.


We’re dedicated to the requirements of ISO 9001:2015 standard, in pursuit of the constant improvement of our overall performance and efficiency.

We conduct yearly audits to identify any deficiencies. Inspections are completed on a weekly, monthly, and yearly basis. We use the information from these reports as a learning tool.

Latest Case Studies

Turnaround Vapour Phase Cleaning During COVID-19
Early job set-up and planning reduced the personnel intensity needs to meet COVID-19 safety requirements and the project being completed 15% under-budget with Zero incidents.
Degassing and Decontamination of a Crude Unit
This was the first vapour-phase application where the entire crude unit was to be degassed and decontaminated simultaneously. Previously, the client had broken down the unit into separate individual stages with each degassing operation taking place over 48-hours.
Treatment Settler
Level One State of Cleanliness of a Treatment Settler
Chemical Degassing was performed on a high-temperature froth treatment settler. Residual sludge up to a foot along the walls, seams were completely removed for a Class 1 inspection.
FourQuest Energy