【作者】 曾德智； 杨斌； 田刚； 朱达江； 林元华； 施太和；

【Author】 Zeng Dezhi~1 Yang Bin~2 Tian Gang~1 Zhu Dajiang~1 Lin Yuanhua~1 Shi Taihe~1 (1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(Southwest Petroleum University);2.Chongqing University of Science & Technology,Chongqing,401331, China.)

【机构】 油气藏地质及开发工程国家重点实验室(西南石油大学)； 重庆科技学院；

【摘要】 在油气田开发过程中,石油管的腐蚀问题日趋严重,研究双金属复合管防腐新材料在石油管中的应用具有十分重要的工程意义。本文针对双金属复合管液压成型的力学问题,建立了模拟双金属复合管塑性成型的参数化有限元力学模型。通过有限元模拟研究,得岀了双金属复合管成型压力的计算方法,得出了双金属复合管在塑性成型过程中内外管的接触压力、径向应力应变等力学特性。开展了规格为φ70×3.5mm碳钢管和规格为φ63×1.16mm不锈钢管的液压成型实验,并采用电阻应变测试法得出了复合管液压成型过程中内外管的形变规律。多次试验结果表明,有限元方法得岀的成型力计算值与实验值吻合较好,证明了本文建立的双金属复合管塑性成型有限元力学模型及其分析方法的合理性,研究成果可为双金属复合管液压成型生产提供指导。更多还原

【Abstract】 Corrosion of oil tubular goods is becoming more and more serious in the exploitation of oil and gas wells,so it is very significant to study new anti-corrosion materials of lined steel pipe.Aiming at the mechanical problem of lined steel pipe hydro-forming, a parametric finite element analysis(FEA) mechanical model is established in this paper to simulate the plastic forming process of lined steel pipe.According to FEA simulation,a method is proposed to calculate forming force of lined steel pipe. Mechanical properties in aspects of bonding force between inner and outer pipes, radial stress-strain ect,were studied.Furthermore,hydro-forming experiments of carbon steel tubingφ70×3.5mm and stainless steel tubingφ63×1.16mm are conducted,and deformation laws of inner and outer pipes in the process of lined steel pipe hydro-forming are analyzed by resistance-strain test method.Test results show that forming force calculated by FEA simulation is in good agreement with the experimental data,so the finite element analysis(FEA) model established in this paper is reasonable and can provide theoretical reference for the manufacturing of lined steel pipe.更多还原