塔中油田超深水平井摩阻扭矩计算与应用

Petroleum Geology and Engineering(2017)

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Abstract
塔中油田碳酸盐岩储层埋藏深度大、裂缝溶洞发育,井眼复杂程度高,钻井过程中,摩阻扭矩计算难度增加.应根据不同井段和不同钻柱段,选取相应计算模型:在造斜段及底部钻具组合段,采用以刚杆模型为基础的纵横弯曲梁模型;在稳斜段、水平段,采用修正软杆模型;在直井段,采用软杆模型.利用该模型对塔中862H井三开井段实例计算表明,计算结果与实测结果相近,平均误差10%左右,可满足钻井施工要求.
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