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

作　　者：王勇军 聂德久 袁宝宏 袁宝新 赵长亮 张涛 刘振新 WANG Yongjun;NIE Dejiu;YUAN Baohong;YUAN Baoxin;ZHAO Changliang;ZHANG Tao;LIU Zhenxin(The Second Hydrogeology and Engineering Geology Brigade of Shandong Provincial Bureau of Geological Survey(Lubei Geological Engineering Survey Institute of Shandong Province),Dezhou Shandong 253072,China;Shandong Engineering Technology Research Center for Geothermal Clean Energy Exploration and Reinjection,Dezhou Shandong 253072,China;273 Geological Brigade of Shandong Nuclear Industry,Yantai Shandong 264006,China;Drilling Engineering Technology Research Center of Shandong Bureau of Geology and Mineral,Yantai Shandong 264004,China)

机构地区：[1]山东省地质矿产勘查开发局第二水文地质工程地质大队(山东省鲁北地质工程勘察院),山东德州253072 [2]山东省地热清洁能源探测开发与回灌工程技术研究中心,山东德州253072 [3]山东省核工业二七三地质队大队,山东烟台264006 [4]山东省地矿局钻探工程技术研究中心,山东烟台264004

出　　处：《钻探工程》2024年第6期125-131,共7页Drilling Engineering

基　　金：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);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)。

摘　　要：在天阳盆地高温地热钻探施工中,受变质岩系硬岩地层岩性和高温的影响,牙轮钻头机械钻速低、磨损严重、使用寿命短,严重影响钻探施工。对PDC钻头的应用进行了探索研究,针对地层岩性特征,对钻头体、刀翼、剖面轮廓及复合片的选择和布设等关键技术进行了探索,并在钻探实践中优化改进,研究出了一种抗冲击性能较好、适宜于变质岩系硬岩地层的PDC钻头。有效地提高了机械钻速、降低了钻井成本,为天阳盆地高温地热钻探项目的顺利实施提供了技术支撑。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 

分 类 号：TE921.1[石油与天然气工程—石油机械设备] P634.41[天文地球—地质矿产勘探]