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Keywords: lifting
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Journal Articles
Article Type: Research Papers
J. Energy Resour. Technol. June 2007, 129(2): 96–101.
Published Online: October 7, 2006
... by the pipestring when lowered. The special working theory of this rig is introduced. An energy-saving analysis is conducted. Analysis shows that when lowering the pipestring which weighs 260 kN , the energy recovered by this rig is about 240 × 10 6 J . The mathematical model of lifting the pipestring...