新型PDC钻头设计  

NOVEL PDC BIT DESIGN TO OPTIMIZE ITS PERFORMANCE IN MULTI-INTERBEDED FORMATION

作　　者：孙明光[1] 张云联[1] 

机构地区：[1]胜利石油管理局,山东东营257017

出　　处：《石油钻采工艺》2000年第2期31-34,共4页Oil Drilling & Production Technology

摘　　要：PDC钻头在钻井破岩中所占的比例越来越大 ,但在软硬交错的多夹层地层钻进时效果却不理想 ,常常发生先期损坏。针对胜利油田多夹层地层特点进行了 PDC钻头的优化设计 ,突破了 PDC钻头单一切削元件模式。根据该设计制造的一种新型复合式 PDC钻头在多夹层地层中取得了较好的应用效果。与牙轮钻头相比 ,复合 PDC钻头机械钻速高、寿命长、进尺多等特点 ,对加快油田勘探开发速度、降低钻井成本有积极的意义。More and more polycrystalline diamond compact (PDC) bits are used in oil well drilling, but their performance in the soft and hard rock interbeded formation is not ideal, premature failure occurs frequently. A new PDC bit design is presented to optimize its performance in the multi-interbeded formation, by modifying the pattern of cutting elements on conventional PDC bit. A new PDC bit made based on the design achieved desired results in field drilling, and in comparison with roller cone bit, it shows its advantage over higher ROP, longer service life and more footage, etc., and it's beneficial for speeding up oilfield development and cutting down the drilling cost.\;

关 键 词：聚晶金刚石钻头 结构设计 切削 夹层 PDC 油田 

分 类 号：TE921.102[石油与天然气工程—石油机械设备]