Qatar Unveils Massive Offshore Redevelopment Program

By Abdelghani Henni 9 Jun 2014

Qatar Petroleum has revealed a plan to invest USD10.9 billion on the redevelopment of the offshore field of Bul Hanine as part of its efforts to reverse its decline in crude output, which has slumped to 730,000 B/D, with crude oil exports now estimated at 630,000 B/D.

Bul Hanine, one of the largest fields managed and executed by QP, is designed to prolong the field’s life and double its current oil production rate from 45,000 B/D to 90,000 B/D. Bul Hanine, located about 120 km east of the Qatari coastline, currently at the pre-FEED stage, is part of a development and production strategy based on acquiring maximum recovery of reserves through the longest possible plateau of sustainable production level.

“This project will help boost Qatar’s oil production capacity and reinforce its position as a reliable energy provider,” said Dr. Mohammed bin Saleh Al-Sada, Minister of Energy and Industry and Chairman of QP.

QP is implementing a redevelopment program for its oil fields, which were originally developed with older technology, to ensure steady production levels. Major reservoir and field-wide studies have been undertaken—including seismic surveys—to reassess the reserves and the long-term production prospects for each field. This has been carried out using improved oil recovery techniques and full field redevelopment plans, as well as the latest technology in computer modeling and processing. 

The redevelopment project of Bul Hanine field includes new offshore central production facilities and a new onshore gas liquids processing facility at Mesaieed. This will be marked by a massive drilling campaign of about 150 new wells between now and 2028.

New wells will be drilled from the existing/modified wellhead jackets, as well as from 14 new wellhead jackets. Both new and modified wellhead jackets, in addition to associated production and injection flowlines, will form parts of the project works.

All wellhead stream fluids will be processed in the new offshore central complex, composed of production, compression, utility, and living quarter platforms, with topside weight ranging from 4,000 to 14,000 tonnes. 

Produced oil will be sent to Halul Island for export. The produced sour rich gas of about 900 million cubic feet per day will travel via a new 150 km subsea pipeline to a new gas treatment facility in Mesaieed for products recovery, where lean sweet gas will be sent via a new subsea pipeline back to the new offshore facilities for compression and injection. 

The redevelopment is part of a comprehensive plan to raise the efficiency of producing fields and increase crude oil reserves in fields like Bul Hanine and Dukhan.

In addition to Bul Hanine, QP has set redevelopment plans for two other QP-operated oil fields. Next will be the onshore field Dukhan, whose output has dropped from 300,000 B/D to 230,000 B/D because of reservoir-management issues, followed by the offshore Maydan Mahzam.

The Dukhan oil field has the capacity to produce up to 335,000 B/D. However, actual annual production is based on reservoir-management requirements. The field has 185 oil-producing wells, 211 water-injection wells, and 57 gas producers and injector wells. According to the latest well status, the total number of wells in Dukhan is 632, which includes all production, injection, observation, closed-in, and abandoned wells. 

Abdelghani Henni is the Middle East Editor for the Journal of Petroleum Technology.