| 水平井井底钻压的研究 |
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| 引用本文： | 肖建波,雷宗明,晏凌.水平井井底钻压的研究[J].钻采工艺,2001,24(3):10-13. |
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| 作者姓名： | 肖建波 雷宗明 晏凌 |
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| 作者单位： | 1. 重庆石油高等专科学校
2. 川东钻探公司 |
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| 摘 要： | 将水平井井内切点以上非垂直井段钻柱，采用弹性梁的变形微分方程以及单元体的静力平衡和力矩平衡关系建立了钻进时轴力的二维计算模式，同时，对切点以下导向动力钻具组合采用纵横弯曲法大变形进行分析时，考虑了动力钻具结构弯曲角的影响，得出导向动力钻具三弯矩方程组和扶正器正压力，摩擦阻力的二维计算模式，并给出了利用钻井时的钻重和视压力，计算出吉底钻压的方法及步骤。
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| 关 键 词： | 水平井 计算模式 力学模型 应用 石油钻井 井底钻压 |
| 修稿时间： | 2000年4月25日 |
Research on Bottom WOB of Horizontal Well |
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| XIAO Jianbo and LEI Zongming.Research on Bottom WOB of Horizontal Well[J].Drilling & Production Technology,2001,24(3):10-13. |
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| Authors: | XIAO Jianbo and LEI Zongming |
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| Abstract: | Two-dimensional computing model of drilling string axial force above tangential point in non-vertical section of horizontal well is estabilished by deformation differential equation of elastic beam and relation of free static balance and free torque balance.Meanwhile,steerable power BHA under tangential point is analysed.It considers the influence of power drill tool bending angle.Tribending moment equation group of steerable power BHA and two-dimensional computing model of positive pressure and frictional resistance of centralizer are obtained.The methods and step of calculating bottom WOB are proposed by using bit weight and apparent pressure during drilling. |
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| Keywords: | horizontal well weight on bit (WOB) computing model mechanics model application |
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