THERMAL SCIENCE

International Scientific Journal

DESIGN AND STRENGTH ANALYSIS OF THE PASSIVE THERMAL INSULATION STRUCTURE OF A DEEP ROCK IN-SITU THERMAL INSULATION CORING SYSTEM

ABSTRACT
The zero-sum game between the strength of deep in-situ thermal insulation coring structures and the performance of passive thermal insulation materials seriously restricts the exploration and development of deep resources. In this paper, an innovative thermal insulation coring structure based on passive thermal insulation material is designed, and a strength analysis of thermal insulation material is carried out based on the elastic theory of multilayer cylinders, which reveals the stress distribution and deformation law of thermal insulation material in a deep in-situ environment. The reliability of the results is verified by comparisons between the numerical simulation and theoretical derivation. The results show that for deep coring environments of 150°C and 140 MPa, the wall thickness and diameter of the corer can be greatly reduced by directly coating the insulation material on the surface of the core barrel. This paper can provide a reference for the design and engineering application of deep rock in situ thermal insulation coring systems.
KEYWORDS
PAPER SUBMITTED: 2022-08-07
PAPER REVISED: 2022-11-12
PAPER ACCEPTED: 2022-11-22
PUBLISHED ONLINE: 2023-03-04
DOI REFERENCE: https://doi.org/10.2298/TSCI2301623S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 1, PAGES [623 - 630]
REFERENCES
  1. Xie, H., et al., Experimental Study on Rock Mechanical Behavior Retaining the in Situ Geological Conditions at Different Depths, International Journal of Rock Mechanics and Mining Sciences, 138 (2021), 121, pp. 341-362
  2. Gao, M., et al., Calculating Changes in the Fractal Dimension of Surface Cracks to Quantify How the Dynamic Loading rate Affects Rock Failure in Deep Mining, Journal of Central South University, 27 (2020), 10, pp. 3013-3024
  3. Li, C., et al., The Characteristics of Mining Induced Stress Fluctuations in Broken Rock Mass Over One Kilometer Deep Coal Mine, Thermal Science, 23 (2019), Suppl. 3, pp. S843-S851
  4. Gao, M., et al., The Mechanism of Microwave Rock Breaking and its Potential Application to Rock-Breaking Technology in Drilling, Petroleum Science, 19 (2022), 3, pp. 1110-1124
  5. Gao, M., et al., Discing Behavior and Mechanism of Cores Extracted from Songke-2 Well at Depths Below 4500 m, International Journal of Rock Mechanics and Mining Sciences, 149 (2022), 5, 104976
  6. Gao, M., et al., Principle and Technology of Coring with In-Situ Pressure and Gas Maintaining in Deep Coal Mine (in Chinese), Journal of China Coal Society, 46 (2021), 3, pp. 885-897
  7. Gao, M., et al., The Novel Idea and Technical Progress of Lunar In-Situ Condition Preserved Coring, Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 8 (2022), 2, pp. 1-20
  8. Gao, M., et al., Mechanical Behavior Of Coal Under Different Mining Rates: A Case Study From Laboratory Experiments To Field testing, International Journal of Mining Science and Technology, 31 (2021), 5, pp. 825-841
  9. Yang, M., et al., On Distribution Characteristics of the Temperature Field and Gas Seepage Law of Coal in Deep Mining, Thermal Science, 24 (2020), 6B, pp. 3923-3931
  10. Gao, L., et al., Study on the Effects of Temperature and Immersion on the Acoustic Emission and Electromagnetic Radiation Signals of Coal Rock Damage Under Load, Engineering Geology, 297 (2022), 2, 106503
  11. Yang, J., et al., Study of Permeability Evolutions in Low Permeability Media Under Different Stresses and Temperatures, Rock Soil Mech, 30 (2009), 12, pp. 3587-3594
  12. Villar, M. V., et al., Influence of Temperature on the Hydro-Mechanical Behaviour of a Compacted Bentonite, Applied Clay Science, 26 (2004), 1-4, pp. 337-350
  13. He, Z., et al., Design and Verification of a Deep Rock Corer with Retaining the In-Situ Temperature, Advances in Civil Engineering, 2020 (2020), ID8894286
  14. Pettigrew, T. L., Design and Operation of a Wireline Pressure Core Sampler (PCS), Technical Note 17, Texas A&M University, Bryan, Tex., USA, 1992
  15. Amann, H., et al., HYACE-a Novel Autoclave Coring Equipment for Systematic Offshore Gashydrate Sampling (in Germany), Deutsche Wissenschaftliche Gesellschaft fuer Erdoel, Erdgas und Kohle e.V., Hamburg, Germany, 1997
  16. Schultheiss, P., et al., Wireline Coring and Analysis under Pressure: Recent Use and Future Developments of the HYACINTH System, Sci. Dril., 7 (2009), 7, pp. 44-50
  17. Deng, W., Gas Hydrate Deep Water Shallow Hole Heat Preservation and Pressure Maintaining Coring Tool (in Chinese), Enterprise Science and Technology and Development, 26 (2010), 3, 56
  18. Zhang, Y., et al., Experimental Study on Natural Gas Hydrate Fidelity Sampling Drilling Tool (in Chinese), Prospecting Engineering (Geotechnical Drilling and Excavation Engineering), 2007 (2007), 9, pp. 62-65
  19. Yang, L., et al., Development and Application of GWY194-70BB Coring Tool with Heat Preservation and Pressure (in Chinese), Oil Drilling & Production Technology, 36 (2014), 5, pp. 58-61
  20. Cai J., Development of Marine Thermal Insulation and Pressure Preserving Sampling Drill (in Chinese), Prospecting Engineering (Geotechnical Drilling and Excavation Engineering), 43 (2016), 2, pp. 60-63
  21. He, Z., et al., Research on Properties of Hollow Glass Microspheres/Epoxy Resin Composites Applied in Deep Rock In-Situ Temperature-Preserved Coring, Petroleum Science, 19 (2022), 2, pp. 720-730
  22. Yang, X. J., et al., On the Theory of the Fractal Scaling-law Elasticity, Meccanica, 57 (2022), 4, pp. 943-955

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence