The contract requires Asset Guardian Solutions to provide its software management application to secure the integrity of software and critical processes.
The software will be installed at the operator's assets in the North Sea.
The software provides a multifaceted, single-point solution to manage the process control software it uses to operate its assets.
It also ensures the oil player complies with all relevant regulatory standards and government directives on process critical systems.
Asset Guardian provides a single, secure repository for all the company's North Sea data, enhancing workflow and stopping unauthorised access to process software.
Because the operations take place in the hostile environment of the North Sea, communication cannot always be relied on.
"To address this we are also providing AGSync, a software solution that we developed especially for the oil and gas industry that makes it possible to synchronise data and files between locations," AGS managing director Sam Mackay said.
Migration of files and training will also be provided to the company.
The new contract follows those for other companies, including Woodside, Inpex, Stena Drilling, Marathon and nuclear energy provider EDF Energy.