Abu Dhabi Gas Industries Company (Gasco) has tendered a $25m-plus contract for modifications of its gas processing facilities at the coastal Bab field as part of a major boost to the company’s emirate-wide processing and distribution facilities.

The engineering, procurement and construction (EPC) contract covers the construction of new heat exchangers, air coolers, and pumps at the field. Gasco has asked firms prequalified to bid on the deal to submit technical proposals by 14 April.

Firms prequalified to bid on the contract include the UK’s Costain, Paris-based Technip, and France’s Litwin, a source close to the project tells MEED.

It is part of the $1bn-plus Asab, Bab, Bu Hasa and Ruwais (ABBR) programme to increase production, processing and distribution capacity at the fields by 140 million cubic feet a day.

Pakistan’s Descon won an $85m contract to build a 100-kilometre long pipeline linking Gasco facilities in the northeast and southeast of the country.

The Descon deal covers the replacement of a 36-inch pipeline that carries ethane and methane-rich ‘lean’ gas from Gasco’s Thamma C production facilities in the northeast to the state-owned firm’s Asab field in the south.