The estimated $300 million project is centred on recycling gas located in the Arab D gas cap in the Dukhan field. It entails processing 800 million cubic feet a day of wet gas to recover 41,000 barrels a day of condensate and 750 tonnes a day of natural gas liquids (NGL), which will be sent by pipelines to Urn Said. The remaining dry gas will be reinjected into the reservoir to maintain pressure.
The project involves the establishment of a gathering system serving 21 production wells and a gas injection network for 14 wells. The gas will be gathered at a new gas recycling plant where the condensate and NGL will be stabilised into product streams. The products will then be transported by pipeline to the existing Fahahil stripping plant, which will be expanded to accommodate the increased supplies. Here, further treatment will take place before being piped to Umm Said.
Fifteen kiornetres of new NGL pipeline will be built, plus a condensate line of 104 kilometres. At Urarn Said, two new 55,000 cubic metre storage tanks will be erected.
Dukhan Arab D gas recycling project:
the benefits of the alliance approach
Traditional approach Alliance approach
First condensate after 40 months First condensate after 26 months
Minimum of 10 contractors required Only four contractors required
Client project team of 25-30 people Client project team of seven people Several management teams
One common management team
Variations and claims Drive down cost and increase profit
Lowest price, technical acceptability, Best value
short schedule Long-term relationship
Technical problems after start-up
Gas production:600 million cfd 800 million cfd
Condensate recovery:92 % 95 %
Condensate production:27,000 b/d 41,000 b/d
First condensate:1:1:98 15:11:97 or earlier
Process trains:Two One
Project phases:Two One
Source:Paper presented by Jamal Ben Amor, Dukhan Alliance project manager, at Partnering & Strategic Alliances, 26-28 March, Dubai