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Mechanical behavior of fracturing string in super deep exploratory well in Tahe oilfield

机译：塔河油田超深层探索井压裂串的力学行为

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During formation fracturing in super deep wells, the working string must withstand tremendous differences in temperature and pressure. For safety purposes, slip joints and hydraulic anchors are often used. In this paper, the mechanical behavior of the tubular string was modeled according to the working process. Based on data from a high pressure, high temperature super deep exploratory well in Tahe Oilfield in west China, tubing string axial deformation and axial force at key points were calculated in both a normal fracturing and a sand plugging state. Subsequent analysis showed that: change in temperature is the most important inducement to string axial contraction; multiple slip joints should be used and be set in compression state before fluid injection; hydraulic anchors are less reliable and should be paid more attention; and parameters in sand plugging state should be highlighted in down hole tools selection.
机译：在超深井中形成压裂过程中，工作串必须承受巨大的温度和压力差异。出于安全用途，通常使用滑动接头和液压锚。在本文中，根据工作过程建模管状串的力学行为。基于来自高压的数据，在西部的塔赫油田中的高温超深探索性井，在正常压裂和砂堵漏时，计算轴向轴向变形和轴向力。随后的分析表明：温度的变化是串轴颈最重要的诱导;在流体注入之前，应使用多个滑动接头并设置为压缩状态;液压锚度不太可靠，应更加注重;和砂堵漏状态的参数应在下孔工具选择中突出显示。

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