| 摘要: |
| 为了考察随钻扩眼工具钻进过程中产生的特殊结构井眼对井底钻压分配的影响，按照相似原理建立了随钻扩 眼工具底部钻柱动力学特性模拟实验装置,对领眼井底与阶梯井底的钻压分配规律进行了研究。模拟实验结果表 明,随钻扩眼形成的阶梯式井底岩石要比领眼井底岩石更容易破碎,实际钻压分配比小于按照几何结构定义的钻压 分配比。该结果与理论模型的研究得到的结论一致。 |
| 关键词: 随钻扩眼工具 钻压分配比 实验研究 |
| DOI： |
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| Experimental research on ratio of weight on bit for reaming while drilling tools |
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GUAN Zhi-chuan,WEI Wen-zhong, XIA Yan
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(College of Petroleum Engineering in China University of Petroleum, Dongying 257061，Shandong Province，China)
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| Abstract: |
| To study the effect of the peculiar borehole created by reaming while drilling tools on the ratio of weight on bit (WOB) , an experimental facility modeling the dynamic characteristic of the drill string with reaming while drilling tools was established based on the similarity principle. The experimental research on the ratio of WOB for the reaming while drilling tools was carried out. And the results show that the rock around the ladder borehole is apt to fall into pieces compared with the rock around the pilot hole. The actual ratio of WOB is smaller than that calculated by the geometry method，which agrees well with the result obtained by the theoretical method. |
| Key words: reaming while drilling tools ratio of weight on bit experimental research |
