THE DEVELOPMENT OF THE AL KHALEEJ GAS PROJECT NEATLY DOVETAILS WITH EXISTING AND FUTURE RASGAS FACILITIES
The Al Khaleej Gas Project was undertaken by ExxonMobil Middle East Gas Marketing Limited and is operated by RasGas. The plant, at Ras Laffan Industrial City, is adjacent to RasGas Trains 3 and 4. Together, the project’s two trains are meeting 65 percent of Qatar’s domestic demand, making Al Khaleej Gas a cornerstone of the Qatar National Vision 2030.
RasGas started up the first phase of the Al Khaleej Gas Project, (AKG-1), on 2 November 2005 and sold its first gas just five days later. AKG-1 was inaugurated in November 2006 at Ras Laffan Industrial City by His Highness Sheikh Hamad Bin Khalifa Al Thani, the Emir of Qatar, marking the start of pipeline sales gas to domestic markets.
(AKG-1) produces more than 750 Mmscfd of sales gas, which is used by Ras Laffan Power Company to generate power at Ras Laffan Industrial City, provide fuel for Mesaieed Industrial City customers and supply feedstock to the Oryx GTL project. The plant has since operated with excellent performance. In May
of 2006 RasGas sold the first cargo of LPG, opening up a new source of revenue for Qatar.
(AKG-1) uses gas from several wellhead platforms in the Khuff Reservoir of the North
Field. Use of large-bore completions for the wells has allowed higher well-production rates, which has reduced the number of wells needed, representing significant cost savings. To transport the gas to shore, two 38-inch multi-phase subsea pipelines have been laid to Ras Laffan, each capable of carrying approximately 2 Bscfd of wet gas. Some of this gas goes to (AKG-1) and the remainder is shared between RasGas Trains 3, 4 and 5.
The second phase of the project, AKG-2, was completed in December 2009 and inaugurated in May 2010 by His Highness Sheikh Hamad Bin Khalifa Al Thani. AKG-2 has an inlet capacity of approximately 1,500 Mmscfd and is fed from two new 9-slot offshore platforms via 28-inch interfield pipelines that tie into the existing offshore 38-inch pipeline infrastructure.
AKG-2 is designed to produce 1,250 Mmscfd of sales gas, plus 61,000 barrels of field and plant condensate per day, 2,400 tonnes of natural gas liquids (propane and butane) per day, and around 2,500 tonnes per day of ethane. Two new wellhead platforms were among the extensive facilities built to provide raw feedstock for the onshore AKG-2 plant.
AKG-2 features a new generation of offshore platform design that incorporates significant technical innovations. For example, ExxonMobil’s proprietary fast-drill process has increased drilling rates by more than 50 percent, reducing both the time it takes to drill the production wells and the optimised well costs. A number of reservoir technologies essential for understanding subsurface geology and well performance have also been applied, including Empower reservoir simulation, 3-D seismic visualisation and well-completion technologies.
The Al Khaleej Gas processing facilities are among the largest in the world