Due to the proximity of the two plants, Habshan and Bab were grouped into one single entity in 2001 after the merger between GASCO and ATHEER.
Bab is one of GASCO’s original plants. Commissioned in 1981, it has a single NGL extraction train processing 160 MMSCFD of associated gas collected from Abu Dhabi Company for Onshore Oil Operations (ADCO) in the neighboring oil field.
Unlike other GASCO original NGL extraction plants, Bab has sour gas treating facilities. The separated acid gas is piped to Habshan for further treatment, while the sweetened gas is further processed for NGL recovery. The produced NGL is eventually routed to GASCO Ruwais fractionation plant. The residual lean gas is compressed and fed into the sales gas network.
The first ADNOC gas processing plant at Habshan was built in 1984 to process sour gas from Thamama-C reservoir off to Bab oil field. Since then, the plant has gone through several expansion projects, increasing its gas processing capacity to make it one of the largest complex in the world.
Currently, Habshan gas complex has a processing capacity of 4,750 BSCFD. It produces NGL (18,000 tonnes per day), condensate (270,000 barrels per day), and residue gas (3.7 BSCFD) which supplies the sales gas network (1.3 BSCFD) as well as the re-injection system (2.4 BSCFD) into the various reservoirs. Habshan gas complex also produces about 4,500 tonnes per day of liquid sulphur as a by-product of acid gas processing. Liquid sulphur is trucked to GASCO Ruwais facilities where it is granulated and exported.