地质与勘探2011，Vol.47Issue(2)：316-322,7.
地浸砂岩型铀矿致密泥岩齿形复合片钻头的研究与应用
Research and Application of Serrate Composite Bits to Drilling at Dense Mudstone in Uranium Deposits of Disseminated Sandstone type
摘要
Abstract
To solve the problem of low drilling effeciency at dense mudstone in uranium deposits of disseminated sandstone type, we have conducted in situ tests of the serrate and circular-plate composite bits in the Bayingebi basin of Inner Mongolia. For the dense mudstone of weak abrasive resistance and intermediate hardness, we employed Φ104mm double-ring serrate composite bits ( six sets), yielding a drilling rate 2.60m/h, enhancement of 73 ％compared with common composite bits. When we used Φ110mm double-ring serrate composite bits with a flat bottom (four sets), the drilling rate reached 2.58m/h, increased by 27％ compared with general ones. For the dense mudstone of relatively strong abrasive resistance and big hardness, we utilized Φ110mm serrate composite bits of double-ring and step style ( eight sets) to obtain a drilling rate 3.31m/h, an increase of 25 ％ than usual. And the drilling rate of the Φ110mm serrate composite bits of double-ring and flat bottom style ( eight sets) was as high as 4.38m/h, enhanced by 20％ in comparison with general composite bits.关键词
致密泥岩/钻进效率/齿形复合片钻头Key words
dense mudstone/drilling efficiency/ serrate composite bits分类
天文与地球科学引用本文复制引用
要二仓,邢预恩,张富兰,杨爱军..地浸砂岩型铀矿致密泥岩齿形复合片钻头的研究与应用[J].地质与勘探,2011,47(2):316-322,7.基金项目
中国核工业地质局"地浸砂岩型铀矿硬致密泥岩地层钻头的研究与应用"生产中科研项目(编号DK2009). （编号DK2009）
