MUNICH (13 October 2015)—Siemens has signed a long-term service contract with the gas company Dolphin Energy Limited, headquartered in Abu Dhabi. For the company's Dolphin Gas Project in Qatar, Siemens will provide service and maintenance for nine aero-derivative gas turbines from former Rolls-Royce Energy and the related nine Dresser-Rand compressors with a term of eighteen years. Through the acquisitions of Rolls-Royce Energy and Dresser-Rand, Siemens has increased its installed base six times to more than 120,000 units of gas turbines, steam turbines and compressors. The Dolphin Gas Project comprises the production, processing and transportation of natural gas from the world's largest known natural gas field North Field in Qatar. Dolphin Energy's main shareholder is Mubadala Development in Abu Dhabi (51 percent), while the remaining shares are held equally by Total and Occidental.