石灰岩地层PDC钻头仿生PDC齿工作角优化试验研究  

Experimental Study on Bionic PDC Cutting Teeth of PDC Bit Working Angle Optimization for Limestone Stratum

作　　者：高科[1] 孙阳[1] 刘婧 孙友宏[1] 张绪良[1] 李梦[1] 

机构地区：[1]吉林大学建设工程学院,吉林长春130026 [2]威海市水利岩土工程有限公司,山东威海264200

出　　处：《探矿工程（岩土钻掘工程）》2015年第11期70-73,共4页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：中国地质调查局地质调查工作项目(编号:12120114055001);国土资源部公益性行业科研专项经费(编号:Sino Probe-09-05);国家自然科学青年基金(编号:51004052);国家潜在油气资源(油页岩勘探开发利用)产学研用合作创新研究项目(编号:OSR-04-04)

摘　　要：在仿生耦合理论的指导下,根据贝壳的表面非光滑的结构特性设计研制一种仿生PDC齿。设计PDC钻头时,主要考虑切削齿的后倾角与侧转角,二者对钻头碎岩效率有重要影响。通过理论分析仿生PDC齿在钻头的最优安装角度,并通过钻进试验来优选仿生PDC齿在钻进石灰岩的最优安装角度。试验结果表明:在相同的转速、钻压的条件下,切削齿后倾角为20°、侧转角为0°时,钻头钻速最快。此试验结果可以为石灰岩地层用PDC钻头的设计提供参考依据。Based on the bionic coupling theory, a kind of PDC cutter was designed according to the non-smooth surface structure of shells. In the design, the posterior slope and side rake angle were mainly considered, which have important influence on rock breaking efficiency. The bionic PDC cutters＇ optimal installation angle in bit was theoretically analyzed and that in limestone drilling was further optimized by drilling test. The experimental results show that with the same rotating speed and weight on bit, the fastest rotating speed can be obtained with posterior slope 20° and side rake angle 0°. And the experimental results above may serve as a reference for PDC bit design, especially for the PDC drilling bit used in limestone stratum.

关 键 词：仿生 PDC齿 非光滑 后倾角 侧转角 PDC钻头 

分 类 号：P634.41[天文地球—地质矿产勘探]