There have long been quality measures such as the drilling difficulty index and the wellbore quality scorecard.

先前早就有表征井身质量的方法，如钻进难度系数和井身质量记分卡。

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There have long been quality measures such as the drilling difficulty index and the wellbore quality scorecard.

先前早就有表征井身质量的方法，如钻进难度系数和井身质量记分卡。

youdao