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井架由于长期使用，各部件在拆卸、运输和安装过程中产生了不同程度的变形、损伤和腐蚀，影响了井架原设计时的承载能力。为此，提出了以实测应变参数为主的井架可靠性评估，来评定井架承载能力的方法，为使数据处理的准确性，以现场测试数据为基础，应用最小二乘法原理，用线性回归推算出井架在大载荷下的应力；利用结构抗力—荷载响应干涉理论，对井架进行可靠性评估，并且在评估方法中考虑了标准偏差的修正问题，在实例中对修正前、后井架可靠指标作了比较。在上述方法基础上，编制了一套数据处理分析软件，使得评估工作快速、方便、准确，及时避免可能的事故发生。文中还介绍了在高科１ 井、克拉２ 井的测评情况，使得该方法获得圆满效果。
Due to the long-term use of the derrick, the deformation, damage and corrosion of the various parts during disassembly, transportation and installation have affected the carrying capacity of the derrick in the original design. Therefore, a method of assessing the bearing capacity of derricks based on the measured strain parameters is proposed. In order to make the accuracy of data processing based on field test data, the principle of least square method is used to calculate The stress of derrick under high load; the reliability assessment of derrick with structural resistance-load response interference theory, and the correction of standard deviation was taken into account in the assessment method. In the example, the reliability index of derrick before and after modification A On the basis of the above method, a set of data processing and analysis software has been compiled, which makes the evaluation work fast, convenient and accurate, and avoids possible accidents in time. The paper also introduced the evaluation of Well 1 and Well Kela 2 in the well, making the method successful.