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    寶鋼Ф139.7mm×7.72mm P110鋼級鉆井用套管擠毀試驗(yàn)研究

    Collapse Test Research on Baosteel-made Ф139.7 mm×7.72 mm P110 Casing for Well-drilling Service

    • 摘要: 套管鉆井是一種先進(jìn)的鉆井技術(shù)。鉆井采用套管取代鉆桿,井下鉆具組合直接連在套管下面,鉆井與下套管作業(yè)同時進(jìn)行。套管鉆井具有節(jié)省鉆井時間、減少井下事故、改善水利特性、降低鉆井生產(chǎn)成本等優(yōu)點(diǎn)。針對套管鉆井過程中套管受到不同程度的磨損,模擬套管均勻磨損和偏磨工況,采用全尺寸實(shí)物試驗(yàn)方法,對寶山鋼鐵股份有限公司Ф139.7mm×7.72mm P110鋼級鉆井用套管進(jìn)行了擠毀試驗(yàn)研究,研究結(jié)果對鉆井套管的選用有一定的指導(dǎo)意義。

       

      Abstract: Using casings for well-drilling is regarded as an advanced well-drilling technology. Since casings are substituted for drill pipes,and thus directly jointed with the drilling tool assembly in the well so as to get the well-drilling operation conducted together with the down-well operation of casings. Drilling well with casings features such advantages as shortening operation time,minimizing in-well accident rate,improving the hydrocharacteristics and reducing operation costs,etc. Addressing the fact that casings are worn with different severities during the drilling process,anti-collapse test research is carried out on the Baosteel-made Ф139.7 mm×7.72 mm P110 casing for well-drilling service by means of simulating the even wear and uneven wear operation conditions of casings and the test method with the full-sized casing sample. The research result is instructive to a certain extent for choosing proper casings for well drilling purpose.

       

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