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Compressor and GT Upgrades for Abu Dhabi Gas Re-Injection Plant

Posted on June 7, 2006

GE's Oil & Gas business announced it will upgrade gas turbines and compressors at the Asab Gas Development (AGD) gas re-injection plant in Abu Dhabi to increase the processing and production capabilities of the facility, which is owned by Abu Dhabi National Oil Company (ADNOC) and managed and operated by Abu Dhabi Gas Industries Ltd. (GASCO). The upgraded AGD plant is being designed to produce 6200 tons per day of natural gas liquids (NGL) from the Asab gas field. The EPC contractor for the project is Eastern Bechtel Co. Ltd. supported by VECO Engineering, the project management consultant.

The existing plant includes four GE MS5002C gas turbines that drive four BCL compressors for gas re-injection. Under the scope of GE's contract to expand the plant's capacity, the gas turbines will be upgraded to MS5002D models, which offer an increase in efficiency. The new machines also are equipped with new Dry Low NOx combustion systems that reduce NOx emissions across a broad operability range.

In addition, the four compressors will be equipped with newly designed internal parts, including a dry gas seals retrofit for the high-pressure compressors and new wheels for the gear boxes. The upgrade of the turbocompressor systems will improve flow capacity by approximately 14%. To meet the new production requirements, an increase in pressure of five bars and a new gas composition are required for the compressors. GE's compressor upgrade engineers, leveraging their experience based on more than 350 rebundling projects, have customized and redesigned compressor materials to fit the new conditions.

The upgrade project will be conducted during a 25-day plant shutdown scheduled in October and November of 2007. GE will employ its new maintenance process, removing the gas turbines and replacing them in modules, which substantially reduces the length of the outage.

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