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ADGAS, the pioneer LNG producer in the gulf region, was set up to implement the directives given by the late Sheikh Zayed Bin Sultan Al Nahyan, founder of the UAE, and His Highness Sheikh Khalifa Bin Zayed Al Nahyan, President of the United Arab Emirates and Ruler of the Emirate of Abu Dhabi, to put an end to the flares that wastefully burnt the gas extracted with crude oil and to efficiently utilize this natural resource and produce clean energy to be sold in the international market. 

The aim was to protect the environment by providing a much needed source of clean energy for export, which would also benefit the country and its people by generating additional source of income.  New methods were sought to utilize the large volumes of associated gas requiring scientific and economic studies, accurate and precise planning and the use of the most advanced technologies. 

ADGAS employs a highly qualified and skilled workforce and instituted sound marketing policies.  It was on these solid grounds that the joint venture Abu Dhabi Gas Liquefaction Company Ltd. (ADGAS) was established in 1973 with the participation of Abu Dhabi National Oil Company (ADNOC), Mitsui & Co., BP and Total.

Gas Supply from ADMA-OPCO

ADGAS is a unique LNG project worldwide due to its use of gases associated with oil production of ADMA-OPCO (business partner) and which varies in hydrocarbon composition and flows at varying pressures. The associated feed gas, therefore, requires stabilizing and suitable pressurizing before being treated and processed by Trains 1 and 2. The non-associated gas supplies are mainly fed into Train 3 of the LNG production stream. Overall, there are currently 12 different sources of gas supply at various pressure levels. 

Supply to On-Shore

The gas supply to Abu Dhabi by way of the Off-Shore Associated Gas and the Integrated Gas Development (IGD) Projects will transfer up to 1,000 MMscfd of high and low pressure gas from Das Island to Habshan. The produced gas will be initially processed in the ADMA-OPCO facilities at Umm Shaif and then sent to the ADGAS facilities at Das Island where the gas will be conditioned and sent through the 30” pipeline to Habshan.  At Habshan, the gas will be further processed for optimum lean gas production and then sent to the sales gas header.


The raw feed gas goes through a series of processes as illustrated in below to compress the gas, remove sulphur and other impurities and dehydrate the gas before it is processed to separate the various products and cool it to the prescribed temperature to enable storage and shipping.

In 1977, the gross production rate was only 150 tons of LNG per hour per train for each of the two trains.  This rate was increased to 180 ton per hour per train. The addition of the third train in 1994 at a production rate of 320 tons per hour, which was later increased to 384 tons per hour through technological changes (de-bottlenecking), resulted in doubling capacity. 

Main Business Locations

The main business locations of ADGAS include the following:

Das Island: Location of its Process Trains, Storage and Shipping Facilities and Plant Support Functions.
Abu Dhabi: HQ Building, Projects Division Offices, Engineering Division Offices and Procurement Logistics Support Activities.
Tokyo: Tokyo Liaison office to service the principal customer (TEPCO).
Habshan: GASCO processing facilities where the off-shore gas supplies will land on the main land of Abu Dhabi.