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利用ｄｃ指数法确定地层压力，修正了水力因素对机械钻速的影响，对６口井不同井段压差对机械钻速的影响进行了分析，在此基础上建立了压差影响系数和井深的定量关系。
Stratified pressure was determined by dc index method. The influence of hydraulic factors on ROP was modified. The effect of pressure difference on ROP in six wells was analyzed. Based on this, the influence coefficient of pressure difference and well depth The quantitative relationship.