Abu Dhabi Gas Industries Ltd. (GASCO) is the operating company in Abu Dhabi responsible for processing associate and non-associate gas from onshore oil production.GASCO convents the previously flared oil by-products into different marketable forms of clean energy. Processing takes place in its five plants at Asab, Bab, Bu Hasa, Habshan and Ruwais. A network of pipelines transport part of the processed NGL to Ruwais. A network of pipelines transport part of the processed NGL to Ruwais Plant where it is fractionated and separated into propane, butane and pentane plus. These three products are stored in special tanks to later ship them to the world via the loading jetty at Ruwais Plant. The remaining processed gas and residual dry gas are used as fuel for the field plants as well as several customers in Abu Dhabi including power and water desalination plants, refineries, petrochemical plants and other industrial amenities. GASCO also recently started supplying Natural Gas to the Emirate of Dubai.

The Company began as a joint venture incorporated in 1978 with ownership shared between Abu Dhabi National Oil Company (ADNOC), TOTALFINA ELF, Shell Abu Dhabi and PARTEX.

In April 2001, ABU DHABI GAS COMPANY (ATHEER) was integrated with GASCO, which lead to further enhancement to GASCO′s position as one of the largest gas processing companies in the world and one of the biggest industrial projects in the UAE.