钻探工程2024，Vol.51Issue(6)：125-131,7.DOI:10.12143/j.ztgc.2024.06.016
天阳盆地高温硬岩地热钻探PDC钻头的研究应用
Research and application of PDC bit for geothermal drilling in high temperature hard rock in Tianyang Basin
摘要
Abstract
In the drilling construction of high-temperature geotherm in the Tianyang Basin,affected by the lithology and high temperature of the hard rock strata of the metamorphic rock system,the cone bit has low mechanical drilling efficiency,serious wear,and short service life,which seriously affects the drilling construction.As a result,the application of PDC bit was explored.Aimed at the lithological characteristics,the key technologies such as the selection and layout of bit body,blade,profile and composite pieces were explored and optimized in drilling practice.A PDC bit with good impact resistance and suitable for metamorphic hard rock formations is developed,which effectively improves the mechanical drilling speed and reduces the drilling cost,which provides technical support for the smooth implementation of the high-temperature geothermal drilling project in the Tianyang Basin.关键词
高温硬岩/地热钻探/PDC钻头/复合片选择和布设Key words
high-temperature hard rock/geothermal drilling/PDC bit/composite sheet selection and layout分类
能源科技引用本文复制引用
王勇军,聂德久,袁宝宏,袁宝新,赵长亮,张涛,刘振新..天阳盆地高温硬岩地热钻探PDC钻头的研究应用[J].钻探工程,2024,51(6):125-131,7.基金项目
山东省地矿局地质勘查引领示范与科技攻关项目"高温地热超深孔勘查取心钻探关键技术研究与应用"(编号:KY202219) （编号:KY202219）
山东省地矿局地质勘查和科技创新项目"大口径深部钻探钻完井技术研究"(编号:KY201946) （编号:KY201946）
