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    油套管標(biāo)準(zhǔn)變化對其性能要求及評價的影響

    Influence by Change of Standard for Tubing&Casing on Property Requirement and Evaluation

    • 摘要: 介紹了新版API Spec 5CT、API Spec 5B、API RP 5C5等標(biāo)準(zhǔn)主要修訂的內(nèi)容，分析了各標(biāo)準(zhǔn)變化對油套管性能要求的影響；重點(diǎn)討論了特殊螺紋接頭氣密封評價、儲氣庫井用套管評價、頁巖氣井用套管評價以及射孔段套管評價等的標(biāo)準(zhǔn)和方法。分析認(rèn)為：與舊版標(biāo)準(zhǔn)相比，新版API Spec 5B增加了螺紋直徑、橢圓度測量及其要求，API Spec 5CT第9版增加了C110鋼級套管，API RP 5C5—2017增加了高溫條件下的接頭性能評價。從油套管主要標(biāo)準(zhǔn)變化可以看出，為了滿足非常規(guī)井的勘探開發(fā)需要，對油套管的性能要求主要體現(xiàn)在：特殊螺紋接頭密封性能、抗高溫性能、耐腐蝕性能、高抗擠性能、接頭抗疲勞性能等。

       

      Abstract: Described here in the essay are the major amendments of the new edition API Spec 5CT, API Spec 5B and API RP 5C5, and also analyzed here are the influences by the changes of these API specifications on property requirements for the tubing/casing.The discussion focuses on the specifications and methods for evaluation of premium connection air-sealing, evaluation of gas storage well-service casing, evaluation of shale gas well casing, and perforation interval casing.The analysis identifies the facts as follows.Compared with the previous editions of the specifications, the new edition API Spec 5B, is added with measurement of thread diameter and ovality, and related requirements;the 9th edition API Spec 5CT is added with the C110 casing, while API RP 5C5-2017 is added with evaluation of performance of the connection under high temperature service conditions.It is revealed via the major changes of the specifications for the tubing and casing that in order to meet the need for exploration and exploitation of unconventional wells, the requirements for properties of tubing and casing are mainly related to sealing performance, high temperature-resistance, corrosion resistance, high collapse resistance and connection ant-fatigue property, etc.of the premium connection.

       

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