Petroleum Development Oman (PDO) has invited companies to prequalify for the Yibal Rejuvenation off-plot project to build facilities at its onshore Yibal oil field in the centre of the sultanate.

Companies have been asked to submit prequalification documents for the engineering, procurement and construction (EPC) contract on 18 December.

According to PDO the aim of the project is to rationalise gathering station system including infield pipeline and flowlines because of integrity issues.

After prequalifying companies, PDO is likely to tender the EPC contract in the first half of 2015. The contract is estimated to be worth up to $200m.

The Yibal field is located in the north of PDO’s Block 6 concession in central Oman.

PDO accounts for more than 70 per cent of the sultanate’s crude production and nearly all of its natural gas supply. The government holds a 60 per cent stake in the company, with 34 per cent held by the UK/Dutch Shell Group, 4 per cent by France’s Total and 2 per cent by Portugal’s Partex.