Power systems developer Rolls-Royce has won a $65m contract from Petrochina, the largest oil and gas producer in China.The company is to provide more gas compression equipment for the West East Pipeline Project (WEPP), the world's longest natural gas pipeline, taking the number of Rolls-Royce RB211 gas turbine compressor packages installed on this pipeline and associated feed and branch lines up from 39 to 45.The gas turbine units will be installed at two new compressor stations along the 2,400 kilometre (1,500 mile) Eastern section of the line. They will join six RB211 units currently being installed along the 2,450 kilometre Western section and 19 RB211 compressor sets already in service on WEPP Line 1. "The nineteen RB211 packages currently operating in China have been in service for nearly half-a-million hours, with the longest running engine achieving over 34,000 hours. Using Rolls-Royce aero engine technology, these gas turbine packages continue to provide very high levels of performance and reliability," claimed Tony Ruegger, executive vice-president of Rolls-Royce's Oil and Gas unit.All of the equipment for the WEPP Line 2 Eastern section is scheduled for delivery by the fourth quarter of 2011. ---jh