| 用于砾石夹层钻进的新型PDC钻头的研制与使用 |
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| 引用本文： | 李天明,李大佛,陈洪俊,雷艳,刘红旗.用于砾石夹层钻进的新型PDC钻头的研制与使用[J].探矿工程,2006,33(8):57-60,63. |
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| 作者姓名： | 李天明 李大佛 陈洪俊 雷艳 刘红旗 |
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| 作者单位： | 中国地质大学长江钻头有限公司;中国地质大学长江钻头有限公司;中国地质大学长江钻头有限公司;中国地质大学长江钻头有限公司;中国地质大学长江钻头有限公司 |
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| 基金项目： | 中石化中原石油勘探局科研项目(编号：审技2005-0008） |
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| 摘 要： | 无压浸渍工艺生产的PDC石油钻头钻遇砾石夹层不适应。根据砾石夹层砾石坚硬、软硬互层、非均质、研磨性强的特点，研究了新型PDC钻头，在钻头结构上主要采取外抛内锥带辅助切削齿的结构形式，在复合片上主要采用非平面结合方式，即采用双向多条直槽非平面结合。按此方案设计与生产了3只钻头，分别在3口井试用，直接钻穿砾石夹层馆陶组地层井段，钻井效率提高26%，突破了砾石夹层钻进不能使用PDC钻头的禁区。
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| 关 键 词： | 砾石夹层 PDC钻头 辅助切削齿 非平面结合方式 |
| 收稿时间： | 2006/7/4 0:00:00 |
| 修稿时间： | 2006/7/4 0:00:00 |
Development and Application of a New Type of PDC Bit Drilling in Cobble Interbed |
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| LI Tian-ming,LI Da-fo,CHEN Hong-jun,LEI Yan and LIU Hong-qi.Development and Application of a New Type of PDC Bit Drilling in Cobble Interbed[J].Exploration Engineering(Drilling & Tunneling),2006,33(8):57-60,63. |
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| Authors: | LI Tian-ming LI Da-fo CHEN Hong-jun LEI Yan and LIU Hong-qi |
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| Institution: | Changjiang Bit Company, China University of Geosciences;Changjiang Bit Company, China University of Geosciences;Changjiang Bit Company, China University of Geosciences;Changjiang Bit Company, China University of Geosciences;Changjiang Bit Company, China University of Geosciences |
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| Abstract: | PDC drill bit manufactured by infiltration process with vibration does not work effectively in cobble interbed, a new type of PDC bit was developed because of the characteristics of high hardness, interbed, inhomogeneity and high abrasiveness. The structure of bit crown is of outside parabola-inside cone features with auxiliary cutting edges; and PDC is of non-plane, that is, multi groove binding has been adopted. According to the new design, 3 bits were produced and to be tried in 3 wells separately. It shows drilling efficiency increased by 26%, and the new type of PDC bit has advantages in drilling cobble formation. |
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| Keywords: | cobble interbed PDC bit auxiliary cutting element non-plane binding |
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