The test results of applying Derrick Stack high frequency sizer are briefly summarized and the change being achieved and the expected benefits are discussed.
简要总结了应用德瑞克叠式高频细筛的试验结果。
The collapse test shows that the breakdown occurred on the upper portion the derrick.
井架压溃试验发现：井架破坏发生在井架上段；
The safety bearing capacity test shows that, the upper portion of the derrick is an area loaded heavily, and the measured stress on the derrick stand is linear to the hook load.
由井架安全承载试验结果可知：井架上段为受力较大部位；井架立柱测试应力与大钩作用载荷呈线性关系。
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