Cause Analysis of Oil Pipeline Rupture during Construction and Preventions

In recent years, several pipeline rupture accidents occurred at the initial stage of production of the new pipelines in the No. 1 Oil Recovery Plant of Henan Oilfield Company resulting in serious negative effects on normal production. The initial cause analysis revealed that composite stress larger than the affordable stress of pipe material could lead to the rupture of pipeline when the constraints were not appropriate or the elastic laying curvature were too small. Various preventing measures are presented in this paper, the field application of which a-chieved good effects.