Φ127 mm涡轮钻具在干热岩钻井取心钻进中的试验研究  

Experimental Research on the Application of 127mm Turbodrill in Hot Dry Rock Core Drilling

作　　者：翁炜 张德龙 赵志涛 朱迪斯 WENG Wei ZHANG De-long ZHAO Zhi-tao ZHU Di-si(Beijing institute of Exploration Engineering, Beijing 100083, China)

机构地区：[1]北京探矿工程研究所,北京100083

出　　处：《探矿工程（岩土钻掘工程）》2017年第9期68-72,共5页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：中国地质调查局地质调查项目"小口径孔底动力钻进关键技术攻关及应用研究"(编号:12120113017500);国际科技合作项目"地质深孔小口径孔底动力安全钻探技术研究"(编号:2011DFR71170)

摘　　要：干热岩地层以火成岩为主,地层温度高,可钻性差。为解决干热岩钻探机械钻速低、钻具磨损严重等问题,针对干热岩特点研制了一套耐高温Φ127 mm涡轮钻具,并在福建省漳州市干热I井进行了试验,试验井段平均机械钻速与Φ165 mm螺杆配合金刚石钻头相比提高了30.3%,与转盘配合牙轮钻头相比提高98.5%。试验结果表明,该Φ127 mm涡轮钻具结构设计合理,能够满足干热岩高温钻探的需要。The hot dry rock resource is mainly made up of volcanic with high temperature and poor drillability. In order to resolve the difficulties of low drilling speed and serious drilling tools wear, a set of Ф127mm high-temperature turbodrill is designed and manufactured, which was tested in a hot dry rock well, the ROP were increased by 30.3% and 98.5% compared with Ф165mm PDM ＋ diamond bit and rotary table matching cone hit respectively. The experiment results show that this Ф127mm turbodrill has reasonable structure design and is suitable for the high-temperature hot dry rock drilling.

关 键 词：干热岩钻探 井下钻具组合 涡轮钻具 PDC轴承 高温钻井 取心钻探 

分 类 号：P634[天文地球—地质矿产勘探]