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    超深復(fù)雜井用非標(biāo)準(zhǔn)規(guī)格TP140V套管的開發(fā)

    Development of Non-APISpecification TP140V Casing for Service in Extra-deep Complex Well

    • 摘要: 分析超深復(fù)雜井套管使用條件和西部某油田勘探開發(fā)的特殊需求，設(shè)計開發(fā)TP140VΦ293.45 mm×23.55 mm規(guī)格超高強(qiáng)度石油套管。分析認(rèn)為：采用中碳鋼設(shè)計，加入Cr、Mo和V等元素進(jìn)行微合金化，利用純凈鋼冶煉技術(shù)，并配合合理的熱處理工藝制度，使生產(chǎn)的TP140V套管的力學(xué)性能、高溫強(qiáng)度完全滿足設(shè)計要求；采用連軋工藝，通過優(yōu)化不同軋制環(huán)節(jié)的變形分配量，使TP140V套管管體橢圓度≤0.25%，壁厚不均度≤8%；且抗外擠性能也滿足要求。

       

      Abstract: Analyzed in the paper are the service conditions of the extra-deep complex oil well,and the special requirements as for the exploitation/exploration of a certain oil field in western China.Based on the analysis,the Φ293.45 mm×23.55 mm TP140V extra-high strength oil casing is designed and developed.Details concerning the R&D of the said casing are as follows.The properties and high-temperature strength of the pipe is in full compliance with relevant design requirements owing to such technological measures as carbon steel-based chemical composition and optimized micro-alloying with addition of Cr,Mo and V,adoption of clean-steel melting technique,and proper heat treatment process;and the pipe has high dimension tolerances as ovality ≤ 0.25% and WT unevenness ≤ 8%,and collapse resistance satisfactory to applicable requirement thanks to employing continuous rolling process and optimizing the distributed deformation amounts for different rolling steps.

       

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