Chinese gas pipeline overcoming geographic obstacles en route to 2004 start-up

Under construction since October 2001, PetroChina Co. Ltd.'s West-to-East natural gas pipeline is moving toward a 2004 completion of the approximately 3,800 km, 1,016-mm (40-in.) mainline.This third and concluding article describes some of the major challenges and obstacles faced by the project and how they are being overcome.The second article (OGJ, May 26, 2003, p. 54) described the project's design and specifications, significant material suppliers and contractors, and construction plan, schedule, and management. Part 1 (Mar. 17, 2003, p. 68) provided an overview of the project, its rationale and status.The pipeline route crosses topographical features that create major and uni...

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