EXPERIMENTAL STUDY ON CO2 REPLACEMENT-EXPLOITATION OF NATURAL GAS HYDRATE UNDER TRIAXIAL STRESS

Wang Tingting; Zhao Jianzhong; Gao Qiang; Zhang Chi

doi:10.19912/j.0254-0096.tynxb.2022-1881

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (4) : 584-591. DOI: 10.19912/j.0254-0096.tynxb.2022-1881

EXPERIMENTAL STUDY ON CO₂ REPLACEMENT-EXPLOITATION OF NATURAL GAS HYDRATE UNDER TRIAXIAL STRESS

Wang Tingting¹, Zhao Jianzhong¹, Gao Qiang^1,2, Zhang Chi¹

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Abstract

In order to simulate the real environment in the sea area, these experiments were carried out to study the effects of sodium chloride, initial saturation of the reservoir and replacement compressive stress on the liquid CO₂ replacement-exploitation of natural gas hydrate in the sea area under the rich water condition. This study shows that under the condition of triaxial stress and porosity about 46.70%, the sodium chloride system has little effect on the CH₄ replacement efficiency, but it inhibits the CO₂ hydrate synthesis. There is a negative correlation between initial reservoir saturation and CH₄ replacement efficiency. In addition, a high reservoir water content is more favorable for CO₂ storage. The CH₄ replacement efficiency increases with the increasing replacement compressive stress, the increase of replacement compressive stress provides a high driving force for the CO₂ hydrate formation, thereby improving the CO₂ sequestration efficiency.

Key words

natural gas hydrate / carbon dioxide / methane / sodium chloride / replacement / triaxial stress / initial reservoir saturation

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Wang Tingting, Zhao Jianzhong, Gao Qiang, Zhang Chi. EXPERIMENTAL STUDY ON CO₂ REPLACEMENT-EXPLOITATION OF NATURAL GAS HYDRATE UNDER TRIAXIAL STRESS[J]. Acta Energiae Solaris Sinica. 2024, 45(4): 584-591 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1881

References

[1] ZHAO J F, LIU Y L, GUO X W, et al.Gas production behavior from hydrate-bearing fine natural sediments through optimized step-wise depressurization[J]. Applied energy, 2020, 260: 114275.
[2] RUPPEL C D, KESSLER J D.The interaction of climate change and methane hydrates[J]. Reviews of geophysics, 2017, 55(1): 126-168.
[3] MAX M D.Natural gas hydrate: in oceanic and permafrost environments[M]. Dordrecht: Kluwer Academic Publishers, 2003.
[4] 黄炳香, 蔡青旺, 赵兴龙. 基于储层保护的天然气水合物间接置换开采方法[J]. 湖南科技大学学报(自然科学版), 2021, 36(1): 1-9.
HUANG B X, CAI Q W, ZHAO X L.Indirect replacement mining method of natural gas hydrates based on reservoir protection[J]. Journal of Hunan University of Science & Technology(natural science edition), 2021, 36(1): 1-9.
[5] EBINUMA T. Method for dumping and disposing of carbon dioxide gas and apparatus therefor: US5261490[P].1993-11-16.
[6] OHGAKI K, TAKANO K, SANGAWA H, et al.Methane exploitation by carbon dioxide from gas hydrates-phase equilibria for CO₂-CH₄ mixed hydrate system[J]. Journal of chemical engineering of Japan, 1996, 29(3): 478-483.
[7] YOON J H, KAWAMURA T, YAMAMOTO Y, et al.Transformation of methane hydrate to carbon dioxide hydrate: in situ Raman spectroscopic observations[J]. Journal of physical chemistry A, 2004, 108(23): 5057-5059.
[8] OTA M, SAITO T, AIDA T, et al.Macro and microscopic CH₄-CO₂ replacement in CH₄ hydrate under pressurized CO₂[J]. AIChE journal, 2007, 53(10): 2715-2721.
[9] OTA M, ABE Y, WATANABE M, et al. Methane recovery from methane hydrate using pressurized CO₂[J]. Fluid phase equilibria, 2005, 228/229: 553-559.
[10] YUAN Q, WANG X H, DANDEKAR A, et al.Replacement of methane from hydrates in porous sediments with CO₂-in-water emulsions[J]. Industrial & engineering chemistry research, 2014, 53(31): 12476-12484.
[11] SCHODERBEK D, MARTIN K L, HOWARD J, et al.North slope hydrate fieldtrial: CO₂/CH₄ exchange[C]//OTC Arctic Technology Conference. Houston, Texas, USA, 2012.
[12] SIVARAMAN R.The potential role of hydrate technology in sequestering carbon dioxide[J]. Gas tips, 2003, 9(4): 4-7.
[13] YUAN Q, SUN C Y, LIU B, et al.Methane recovery from natural gas hydrate in porous sediment using pressurized liquid CO₂[J]. Energy conversion and management, 2013, 67: 257-264.
[14] YIN Z Y, MORIDIS G, LINGA P.On the importance of phase saturation heterogeneity in the analysis of laboratory studies of hydrate dissociation[J]. Applied energy, 2019, 255: 113861.
[15] WAITE W F, SANTAMARINA J C, CORTES D D, et al.Physical properties of hydrate-bearing sediments[J]. Reviews of geophysics, 2009, 47(4): 465-484.
[16] 王金宝, 郭绪强, 陈光进, 等. 二氧化碳置换法开发天然气水合物的实验研究[J]. 高校化学工程学报, 2007, 21(4): 715-719.
WANG J B, GUO X Q, CHEN G J, et al.Experimental research on methane recovery from natural gas hydrate by carbon dioxide replacement[J]. Journal of chemical engineering of Chinese universities, 2007, 21(4): 715-719.
[17] 王小文. 甲烷水合物 CO₂置换开采影响因素实验研究[D]. 东营: 中国石油大学(华东), 2014.
WANG X W.Experimental study on the influence factors of exploiting methane hydrate by replacement with CO₂[D]. Dongying: China University of Petroleum(Huadong), 2014.
[18] 高强. 砂质水合物降压开采影响因素与方法的实验研究[D]. 太原: 太原理工大学, 2021.
GAO Q.Experimental studies on influence factors and production strategies of depressurization in sandy sediments[D]. Taiyuan: Taiyuan University of Technology, 2021.
[19] YEZDIMER E M, CUMMINGS P T, CHIALVO A A.Determination of the Gibbs free energy of gas replacement in SI clathrate hydrates by molecular simulation[J]. The journal of physical chemistry A, 2002, 106(34): 7982-7987.
[20] FAN S S, WANG X, WANG Y H, et al.Recovering methane from quartz sand-bearing hydrate with gaseous CO₂[J]. Journal of energy chemistry, 2017, 26(4): 655-659.
[21] WANG T, ZHANG L X, SUN L J, et al.Methane recovery and carbon dioxide storage from gas hydrates in fine marine sediments by using CH₄/CO₂ replacement[J]. Chemical engineering journal, 2021, 425: 131562.