Design and experimental performance evaluation of high-temperature and high-pressure test platform for deep in-situ fidelity coring tools
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Abstract
With the increasing mining depth of mineral resources, the temperature and pressure of the underground environment are also on the rise, which puts forward strict requirements for the performance of fidelity coring tools. To promote the development of such tools, a comprehensive high-temperature and high-pressure test platform for deep in-situ fidelity coring tools was constructed, and its working principle was described in detail. In addition, four key functional modules of the test platform were developed. On the basis of the principle of gas-liquid pressurization and the burst failure criterion of pressure vessel, a mechanical module integrating the functions of pressurization and pressure maintaining was designed. The heating and insulation module was developed by using a U-shaped high-speed heater and electromagnetic induction heating technology. The innovation utilized coil cooling technology to achieve effective cooling and pressure relief. Furthermore, the working performance of the test platform was studied experimentally. The designed test platform could run stably for more than 110 min under test conditions of high pressure and temperature of 140 MPa and 150 ◦C, respectively, and it could maintain a stable pressure and temperature at 200 MPa and 160 ◦C for more than 182 min. Under the high-pressure condition of 220 MPa, the pressure remained stable within 140 min, without any fluid leakage. Therefore, the test platform designed in this study can provide experimental conditions of high pressure and high temperature for the research of fidelity coring tools, which is of great significance for the accurate evaluation and safe exploitation of deep mineral resources.
Document Type: Original article
Cited as: Huang, W., Li, J., Yang, Y., Liu, Z., Shang, D. Design and experimental performance evaluation of high-temperature and high-pressure test platform for deep in-situ fidelity coring tools. Advances in Geo-Energy Research, 2025, 15(1): 55-67. https://doi.org/10.46690/ager.2025.01.06
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DOI: https://doi.org/10.46690/ager.2025.01.06
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