Under the amended scope of work, Rolta will implement a comprehensive engineering information system within Sadara's Jubail integrated chemical complex, it said in a statement.
The project is being managed by a global Rolta team working out of the US, India and Saudi Arabia, it added.
"We are very pleased to have been able to demonstrate our superior performance during the initial phase and win the customer's confidence for the second phase of work. Rolta is fully committed to the success of this important project," Rolta Chairman and CEO K K Singh said.
With a total investment of about USD 20 billion, Sadara is now building and will own and operate an integrated chemical complex in Jubail Industrial City II in Saudi Arabia.
Comprised of 26 world scale manufacturing units, the Sadara complex will possess flexible cracking capabilities and will produce over three million metric tons of high value-added chemicals and performance plastics products.
"Successful implementation of the engineering system is vital to the support and efficient operation of the Sadara complex," Sadara Project Project Manager Manufacturing and Engineering Systems Taher Nemer said.