| 多用途液力变径钻头的结构原理及应用 |
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| 引用本文： | 李让,陈明增,王甲昌,王秀东,张志超.多用途液力变径钻头的结构原理及应用[J].石油矿场机械,2005,34(2):61-63. |
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| 作者姓名： | 李让 陈明增 王甲昌 王秀东 张志超 |
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| 作者单位： | 1. 中原石油勘探局,钻井工程技术研究院,河南,濮阳,457001
2. 中原石油勘探局,采油一厂,河南,濮阳,457001 |
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| 摘 要： | 盐层和盐膏层井段引起的盐岩蠕变缩径，不仅易造成卡钻事故．完井后还会挤毁套管，使油井报废。液力变径钻头以其结构简单、开关灵活，操作简便、安全性能高等特点，能够成功地对弹塑性岩层，蠕变盐层、小井眼等井段实施扩眼，尤其对采用爆炸方式松螺纹仍无法起出套管的井，进行下钻一次多点切割，切割成功率高达100％．具有较高的使用价值。
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| 关 键 词： | 蠕变缩径 液力变径钻头 套管切割 套管锻铣 |
| 文章编号： | 1001-3482(2005)02-0061-03 |
| 修稿时间： | 2004年10月11 |
The structure and application of multi-use of hydraulic variable diameter drilling bit |
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| LI Rang,CHEN Ming-zeng,WANG Jia-chang,WANG Xiu-dong,ZHANG Zhi-chao.The structure and application of multi-use of hydraulic variable diameter drilling bit[J].Oil Field Equipment,2005,34(2):61-63. |
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| Authors: | LI Rang CHEN Ming-zeng WANG Jia-chang WANG Xiu-dong ZHANG Zhi-chao |
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| Affiliation: | LI Rang~1,CHEN Ming-zeng~2,WANG Jia-chang~1,WANG Xiu-dong~1,ZHANG Zhi-chao~1 |
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| Abstract: | The reduced borehole diameter caused by creeping salt layer and salt gel will bring blocking pipe or extrude easing when completion finishe.Hydraulic variable diameter drilling bit can enlarge the reduce borehole in elastic layer and salt gel layer for it features simple structure,easy on/off and operation and high safe,It can specially cut the casing at multi-section for the casing that cannot be solved by explosion with 100% success |
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| Keywords: | creep reducing diameter hydraulic variable diameter drilling bit casing cutting casing firing milling |
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