Development and application of turbodrills in hot dry rock drilling

作者：ZHANG De-long,WENG Wei,ZHAO Chang-liang,XU Jun-jun,YANG Peng,HUANG Yu-wen,HU Zhen-zhong

摘要：The strata of hot dry rock (HDR) are usually igneous rocks with high temperature which are challenging for drilling activities. This paper deals with the key technology and research of turbodrills, introduced the application of turbodrills in HDR drilling at home and broad, and analyzed the field application cases. With the advancement such as low speed high torque turbodrill, reduction turbodrills, independent spindlesection and PDC bearings and so on, the application of turbodrills has widely expanded. The application of high-temperature turbodrills in Fenton Hill, HDR geothermal wells, high-temperature formation in Tahe oilfield all proved that turbodrills are the best downhole motors in deep high-temperature HDR drilling, thus they deserve further research and generalization.

发文机构：Beijing Institute of Exploration Engineering The Second Hydro-geology & Geo-engineering Brigade of Shandong Provincial Bureau of Geology and Mineral SINOPEC Henan Oilfield Branch Company

关键词：HOTDRYROCKHDRDRILLINGGEOTHERMALDRILLINGTurbodrillFieldapplication

分类号： TV[水利工程]