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Collapsing Strength Calculation and On-Site Application of Extra-Heavy Wall Casing
Author(s): 
Pages: 77-79
Year: Issue:  6
Journal: NATURAL GAS INDUSTRY

Keyword:  钻井特厚壁套管抗挤强度现场应用;
Abstract: 对于套管挤毁问题较为严重的油气水井,采用非API标准的特厚壁套管来提高其抗挤强度,是今后预防套管挤毁的重要发展方向.目前,特厚壁套管的抗挤强度计算和尺寸系列尚未形成工业标准,文章提出特厚壁套管的抗挤强度计算方法和尺寸系列,供设计者和厂家参考.API/ISO套管挤毁工作组曾对本文公式进行了测评,结果显示具有较高的计算精度.大量计算表明,特厚壁套管的抗挤强度大大提高,约为加厚前原套管抗挤强度的1.5~4倍,甚至6倍.最后还介绍了特厚壁套管在中原油田的现场应用情况.
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