Send Orders of Reprints at Reprints@benthamscience.net Mechanical Analysis of Tubing String in Fracturing Operation
Send Orders of Reprints at Reprints@benthamscience.net Mechanical Analysis of Tubing String in Fracturing Operation
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通讯作者：
Jingyuan Li;Zifeng Li
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作者：
Jingyuan Li;Zifeng Li
油气藏压裂方法被认为是油气产量最大化的工具方法。在油井压裂作业中，多重载荷可能迫使油管柱屈服、断裂和/或以永久螺旋弯曲，从而导致严重的财务赤字。根据油井压裂施工过程，综合考虑井眼轨迹、压裂管柱组成、井内流体性质、内、外压力、压裂管柱与井壁摩擦系数、油管温度、封隔器类型、封隔器活塞效应、油管螺旋屈曲效应、卡瓦接头、等等.用微分法求解这些数学模型，得到张力、扭矩、应力、安全系数、稳定性、伸长等参数，形成管柱的强度校核。利用VisualBasic 2008开发了压裂管柱力学分析软件。最后给出了现场应用实例。
The method of fracturing of oil gas reservoir is considered as an instrumental one for maximizing the yield. Multiple loads in a well fracturing operation may compel tubing string to yield, break and/buckle in a permanent spiral, leading to severe financial deficit. Mathematical models for mechanical analysis of fracturing string in whole fracturing operation are developed on the basis of operation procedures of well fracturing, with full consideration of well trajectory, component of fracturing string, borehole fluid property, internal and external pressure, friction factor between fracturing string and well wall, tubing temperature, packer types, piston effect of packer, helical buckling effect of tubing, slip joint, etc.. These mathematical models are solved with differential methods, obtaining parameters such as tension force, torque, stress, safety factor, stability, and elongation etc. Strength calibration of the string is formed. Software for mechanical analysis of tubing string in fracturing operation is developed with Visual Basic 2008. A case study of field application is also provided.