摘要:利用已完钻测井资料和地质资料对工区地层强度特性进行评价,建立地层声波时差和岩石可钻性的定量关系,估算各层段的岩石可钻性级值,并对地层岩石可钻性进行分级与对比。根据可钻性级值和地层硬度、抗压强度等岩石力学参数及钻井工程情况,利用钻头优选方法,选择适应研究工区的钻头型号,对不同层位使用的钻头型号进行可行性分析和评价。通过几口井实际钻头选型的试验研究和应用,达到了提高机械钻速及钻头进尺,缩短钴鼻周期.隆低钴鼻威太的目的.
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