| 用于砾石夹层钻进的新型PDC钻头的研制与使用 |
| 投稿时间：2006-07-04 修订日期：2006-07-04 点此下载全文 |
| 引用本文：李天明,李大佛,陈洪俊,等.用于砾石夹层钻进的新型PDC钻头的研制与使用[J].钻探工程,2006,33(8):57-60,63.LI Tian-ming,LI Da-fo,CHEN Hong-jun,et al. Development and Application of a New Type of PDC Bit Drilling in Cobble Interbed[J]. Drilling Engineering, 2006,33(8):57-60,63. |
| 摘要点击次数: 996 |
| 全文下载次数: 340 |
|
| 基金项目:中石化中原石油勘探局科研项目(编号：审技2005-0008） |
|
| 中文摘要: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。 |
| 中文关键词:砾石夹层 PDC钻头 辅助切削齿 非平面结合方式 |
| |
| Development and Application of a New Type of PDC Bit Drilling in Cobble Interbed |
|
|
| 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. |
| keywords:cobble interbed PDC bit auxiliary cutting element non-plane binding |
| 查看全文 查看/发表评论 下载PDF阅读器 |
