The move follows Expro's acquisition of PowerWell Services in August 2006, which doubled the number of staff being supported by the helpdesk to 4,000.
The helpdesk also had to extend its operations to provide 24-hour support during the week because of PowerWell's large presence in the US.
Expro selected EasyVista from IT management software supplier Staff&Line over three competing products because of its ability to meet the required level of reporting, especially around SLAs, the company said.
EasyVista was also more flexible and scalable than Expro's previous helpdesk tool called Magic from BMC and PowerWell's Triactive system.
The system allows the database, application and web layers to exist on one, two or three servers, which allows users to scale their setup appropriately according to the size and scope of the system that is required.
Maturity of the product was another consideration, said Martin Ogden, head of infrastructure and operations support at Expro.
"We were primarily looking for a hosted model, and while other suppliers offered this facility, their products were still in their infancy," he said.