摘要：The geological conditions of hot dry rock (HDR) reservoirs are complex. The geothermal mining of HDR faces major challenges in the drilling and construction of wells, fracturing to create storage, and flowing to extract heat. Vibration impacts help improve the rock-breaking efficiency, where the axial-torsional coupled vibration impact technology can increase the bit penetration depth and reduce the stick-slip effect. To study the feasibility and efficiency of the axial-torsional-coupled vibration impact-assisted Polycrystalline Diamond Compact (PDC) bit to break high-temperature and high-pressure rocks, a new experimental setup was designed. The system includes a drilling fluid circulation system, an axial-torsional coupled impact drilling system, a formation simulation system, and a data acquisition and control system. This setup can produce a rock-breaking torque of 2000 N·m, a drilling speed of 200 rpm, a weight on bit of 100 kN, an axial vibration frequency of 100 Hz, and a torsional vibration frequency of 50 Hz. It can simulate the formation pressure of 70 MPa and the rock temperature of 400 °C. A series of rock-breaking drilling experiments were successfully conducted using this setup. The results show that the axial-torsional coupled vibration-impact assisted PDC bit has a good performance in breaking high-temperature and hard rocks, which can accelerate the application of this new technology in deep formation drilling. ? 2024 Author(s).

ISSN号：0034-6748

卷、期、页：卷95期1

发表日期：2024-01-01

期刊分区（SCI为中科院分区）：四区

收录情况：SCI（科学引文索引印刷版）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：Review of Scientific Instruments

通讯作者：嵇然,傅新康,孙照伟

第一作者：史怀忠,黄中伟,赫文豪,武晓光,熊超

论文类型：期刊论文

论文概要：嵇然,史怀忠,黄中伟,赫文豪,武晓光,傅新康,孙照伟,熊超，A novel experimental setup for axial-torsional coupled vibration impact-assisted PDC drill bit drilling，Review of Scientific Instruments，2024，卷95期1

论文题目：A novel experimental setup for axial-torsional coupled vibration impact-assisted PDC drill bit drilling