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    石油套管抗擠毀解決方案及發(fā)展

    Solution for Oil Casing Collapse Resistance and Relevant Development

    • 摘要: 介紹了套管抗擠毀強(qiáng)度預(yù)報方法的演變過程和最新進(jìn)展，對比了各理論的先進(jìn)性和局限性；按照K-T理論分析了影響套管抗擠毀強(qiáng)度的主要因素，其中制造質(zhì)量因素主要包括橢圓度和殘余應(yīng)力；介紹了國內(nèi)外油氣井套管抗擠毀的各種方案和產(chǎn)品；對比了各系列產(chǎn)品和方案的優(yōu)缺點及控制重點。提出了深井異常高壓地層采用特厚壁套管，抗擠毀套管采用調(diào)質(zhì)熱處理工藝，以及提高抗擠毀設(shè)計安全系數(shù)等一系列建議。

       

      Abstract: Briefed here in the essay is the latest research updates and progressive development on the prediction formulas of collapse resistance of the oil casing.Advantages and limitations of each of the relevant theories are respectively analyzed.According to the new Klever-Tamano（K-T model）equation，main factors affecting the collapse resistance are analyzed，including manufacture quality factors like the pipe’s ovality and the residual stress.Elaborated here are also different solutions for oil/gas well-purposed anti-collapse casings and products as made at home and abroad.Various series of related products and solutions are compared in terms of advantages and disadvantages，and the control tips.Furthermore relevant suggestions are put forward，including using extra-heavy wall casing for deep well in abnormal hi-pressure stratum，having the anti-collapse casing subjected to quench-temper treatment，and enhancing design safety factor of collapse resistance of the casing.

       

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