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Modeling tube forming for OCTG with FEA

机译:有限元分析的OCTG建模管成型

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摘要

The oil extraction industry experienced a confluence of events in the early 2000s that created a revolution. Rising crude oil prices coupled with unconventional extraction processes such as hydraulic fracturing and horizontal drilling provided unprecedented access to hard-to-reach reserves. This, in turn, led to an increased demand for all manner of tube and pipe products, especially oil country tubular goods (OCTG). At TMK-IPSCO, finite element analysis (FEA) was recently applied to review and improve the forming process of an 8.6250-inch electric resistance welding (ERW) mill for making tube and pipe for OCTG applications. The study investigated the mill load and the causes of flat spots that appeared on some thin-wall products. Although a higher-than-pre-dicted mill load wouldn't cause an immediate problem, an excessive load on a mill stand likely would cause a bearing failure eventually.
机译:石油开采行业在2000年代初经历了一系列事件的汇聚,引发了一场革命。不断上涨的原油价格,加上非常规的开采工艺,例如水力压裂和水平钻井,为前所未有的难以开采的储量提供了途径。反过来,这导致对各种形式的管材产品的需求增加,尤其是石油国管材(OCTG)。在TMK-IPSCO上,最近应用了有限元分析(FEA)来审查和改进8.6250英寸电阻焊(ERW)轧机的成型工艺,以制造用于OCTG的管材。该研究调查了轧机负荷以及某些薄壁产品上出现平整斑点的原因。尽管高于预期的轧机负荷不会立即引起问题,但轧机机架上的负荷过大可能最终会导致轴承故障。

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