Abstract
During the process of natural gas hydrate (NGH) depressurization exploitation, the intrusion of formation water makes the pressure drop propagation difficult and the gas production lower. At the same time, the decomposition of hydrate in the pore space reduces the cementing strength of the formation, which may lead to geologic hazards such as seafloor subsidence and seafloor landslides. Utilizing CO2 hydrate to seal the overburden of NGH reservoirs not only prevents intrusion of formation water and improves gas production, but also achieves CO2 sequestration. In previous studies, only the gas production increasing was analyzed and the response of the geomechanics during the gas production process was not paid enough attention. In this paper, A coupled thermal–hydraulic–mechanical–chemical (THMC) model for CO2 hydrate sealing of overburden is established by using numerical simulation. Gas production and geomechanical response during the production with sealing overburden were analyzed; The results show that sealing the overburden can effectively promote the propagation of the pressure drop of the CH4 hydrate layer and the supplementation of heat during the production. Sealing overburden can effectively increase the cumulative gas production, decrease the water production, and reduce the seafloor subsidence. Exploiting gas hydrate with sealing overburden is conducive to realizing the dual goals of efficient production and safe production. This work can provide a reference for better realization of safe and efficient production of natural gas hydrate.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Ripmeester, J.A., Tse, J.S., Ratcliffe, C.I., et al.: A new clathrate hydrate structure. Nature 325(6100) (1987)
Sloan, E.D., Koh, C.A.: Clathrate Hydrates of Natural Gases. CRC Press (2007)
Lee, S.Y., Holder, G.D.: Methane hydrates potential as a future energy source. Fuel Process. Technol. 71(1–3), 181–186 (2001)
Alvarado, R., Ponce, P., Criollo, A., et al.: Environmental degradation and real per capita output: new evidence at the global level grouping countries by income levels. J. Clean. Prod. 189, 13–20 (2018)
Godil, D.I., Sarwat, S., Khan, M.K., et al.: How the price dynamics of energy resources and precious metals interact with conventional and Islamic stocks: fresh insight from dynamic ARDL approach. Resour. Policy 75, 102470 (2022)
Moridis, G.J., Kowalsky, M.B., Pruess, K.: Depressurization-induced gas production fromclass 1 hydrate deposits. SPE Reservoir Eval. Eng. 10(05), 458–481 (2007)
Zhao, J., Liu, Y., Guo, X., et al.: Gas production behavior from hydrate-bearing fine natural sediments through optimized step-wise depressurization. Appl. Energy 260, 114275 (2020)
Wang, Y., Feng, J.C., Li, X.S.: Experimental investigation of influence of well spacing on hydrate dissociation by heat stimulation in sandy sediment. Energy Procedia 158, 5699–5704 (2019)
Feng, J.C., Wang, Y., Li, X.S., et al.: Three dimensional experimental and numerical investigations into hydrate dissociation in sandy reservoir with dual horizontal wells. Energy 90, 836–845 (2015)
Sharifi, H., Ripmeester, J., Walker, V.K., et al.: Kinetic inhibition of natural gas hydrates in saline solutions and heptane. Fuel 117, 109–117 (2014)
Yuan, Q., Sun, C.Y., Yang, X., et al.: Recovery of methane from hydrate reservoir with gaseous carbon dioxide using a three-dimensional middle-size reactor. Energy 40(1), 47–58 (2012)
Zhou, S., Zhao, J., Li, Q., et al.: Optimal design of the engineering parameters for the first global trial production of marine natural gas hydrates through solid fluidization. Nat. Gas Ind. B 5(2), 118–131 (2018)
Moridis, G.J., Reagan, M.T., Kim, S.J., et al.: Evaluation of the gas production potential of marine hydrate deposits in the Ulleung Basin of the Korean East Sea. SPE J. 14(04), 759–781 (2009)
Sun, J., Ning, F., Li, S., et al.: Numerical simulation of gas production from hydrate-bearing sediments in the Shenhu area by depressurising: the effect of burden permeability. J. Unconventional Oil Gas Resour. 12, 23–33 (2015)
Sun, Z.F., Li, N., Jia, S., et al.: A novel method to enhance methane hydrate exploitation efficiency via forming impermeable overlying CO2 hydrate cap. Appl. Energy 240, 842–850 (2019)
Liu, X., Sun, Y., Guo, T., et al.: Numerical simulations of hydraulic fracturing in methane hydrate reservoirs based on the coupled thermo-hydrologic-mechanical-damage (THMD) model. Energy 238, 122054 (2022)
Jin, G., Lei, H., Xu, T., et al.: Seafloor subsidence induced by gas recovery from a hydrate-bearing sediment using multiple well system. Mar. Pet. Geol. 107, 438–450 (2019)
Zander, T., Choi, J.C., Vanneste, M., et al.: Potential impacts of gas hydrate exploitation on slope stability in the Danube deep-sea fan, black sea. Mar. Pet. Geol. 92, 1056–1068 (2018)
Li, Q., Li, S., Ding, S., et al.: Numerical simulation of gas production and reservoir stability during CO2 exchange in natural gas hydrate reservoir. Energies 15(23), 8968 (2022)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2024 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Sun, H., Li, S. (2024). Geomechanical Response Analysis of Gas Hydrate Extraction Using CO2 Hydrate Sealing Burdens. In: Sun, B., Sun, J., Wang, Z., Chen, L., Chen, M. (eds) Proceedings of the Fifth International Technical Symposium on Deepwater Oil and Gas Engineering. DWOG-Hyd 2023. Lecture Notes in Civil Engineering, vol 472. Springer, Singapore. https://doi.org/10.1007/978-981-97-1309-7_47
Download citation
DOI: https://doi.org/10.1007/978-981-97-1309-7_47
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-97-1308-0
Online ISBN: 978-981-97-1309-7
eBook Packages: EnergyEnergy (R0)