新型三翼可开闭式PDC钻头的设计与应用

发布时间：2018-07-05 17:48

本文选题：快速下筛管 + 三刀翼　；参考：《煤炭工程》2017年06期

【摘要】：为解决普通四翼可开闭式PDC钻头存在中心翼片开闭不灵活、钻进穿层孔效率低、钻头体易变形的问题,介绍了新型三翼可开闭式PDC钻头的设计。设计方案为:将中心翼片的定位方式由全开放式改为半开放式;将定位珠位置由中心翼片改为镶嵌于钻头体内;将钻头结构由四翼改为三翼,优化布齿。开发的新型三翼可开闭式PDC钻头,在淮南矿业集团朱集东煤矿进行试验,3只钻头平均寿命为590.7m,提高68.8%;钻进砂岩段效率为16m/h,提高33%;中心翼片开闭灵活,下管成功率达到100%。
[Abstract]:In order to solve the problems of common four-wing open-closed PDC bit which is not flexible in opening and closing of central wing, low efficiency of drilling hole in drilling layer and easy deformation of bit body, the design of a new three-wing open-closed PDC bit is introduced in this paper. The design scheme is as follows: changing the position of center wing from open to semi-open; changing the position of bead from center wing to inlay into drill bit; changing the structure of drill from four wings to three wings to optimize the distribution of teeth. In Huainan Mining Group Zhujidong Coal Mine, a new type of three-wing open-closed PDC bit has been developed. The average life of three bits is 590.7 m, which is 68.8%, the efficiency of drilling sandstone section is 16 m / h, and the center wing is flexible in opening and closing, and the success rate of lower pipe is 100%.
【作者单位】：中煤科工集团西安研究院有限公司;西安科技大学建筑与工程学院;
【基金】：“十三五”国家科技重大专项资助项目“晋城矿区地面煤层气抽采剩余气含量与井下高位钻孔及区域递进式顺煤层钻孔工艺技术研究”(2016ZX05067-001-003)
【分类号】：TD712.63

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