Volume 40 Issue 10
Oct.  2021
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Zhenqi Guo, Tao Liu, Lei Guo, Xiuting Su, Yan Zhang, Sanpeng Li. An experimental study on microscopic characteristics of gas-bearing sediments under different gas reservoir pressures[J]. Acta Oceanologica Sinica, 2021, 40(10): 144-151. doi: 10.1007/s13131-021-1834-y
Citation: Zhenqi Guo, Tao Liu, Lei Guo, Xiuting Su, Yan Zhang, Sanpeng Li. An experimental study on microscopic characteristics of gas-bearing sediments under different gas reservoir pressures[J]. Acta Oceanologica Sinica, 2021, 40(10): 144-151. doi: 10.1007/s13131-021-1834-y

An experimental study on microscopic characteristics of gas-bearing sediments under different gas reservoir pressures

doi: 10.1007/s13131-021-1834-y
Funds:  The Shandong Joint Funds of National Natural Science Foundation of China under contract No. U2006213; the Fundamental Research Funds for the Central Universities under contract No. 201962011; the Grant of Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao) under contract No. MGQNLM-KF201804.
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  • Corresponding author: E-mail: ltmilan@ouc.edu.cn
  • Received Date: 2020-08-18
  • Accepted Date: 2021-03-31
  • Available Online: 2021-09-06
  • Publish Date: 2021-10-30
  • Gas-bearing sediments are widely distributed in five continents all over the world. Most of the gases exist in the soil skeleton in the form of discrete large bubbles. The existence of gas-phase may increase or decrease the strength of the soil skeleton. So far, bubbles’ structural morphology and evolution characteristics in soil skeleton lack research, and the influence of different gas reservoir pressures on bubbles are still unclear. The micro characteristics of bubbles in the same sediment sample were studied using an industrial CT scanning test system to solve these problems. Using the image processing software, the micro variation characteristics of gas-bearing sediments in gas reservoir pressure change are obtained. The results show that the number and volume of bubbles in different equivalent radius ranges will change regularly under different gas reservoir pressure. With the increase of gas reservoir pressure, the number and volume of tiny bubbles decrease. In contrast, the number and volume of large bubbles increase, and the gas content in different positions increases and occupies a dominant position, driving the reduction of pore water and soil skeleton movement.
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  • [1]
    Anderson A L, Abegg F, Hawkins J A, et al. 1998. Bubble populations and acoustic interaction with the gassy floor of Eckernförde Bay. Continental Shelf Research, 18(14−15): 1807–1838. doi: 10.1016/S0278-4343(98)00059-4
    [2]
    Best A I, Tuffin M D J, Dix J K, et al. 2004. Tidal height and frequency dependence of acoustic velocity and attenuation in shallow gassy marine sediments. Journal of Geophysical Research: Solid Earth, 109(B8): B08101
    [3]
    Blunt M J, Bijeljic B, Dong H, et al. 2013. Pore-scale imaging and modelling. Advances in Water Resources, 51: 197–216. doi: 10.1016/j.advwatres.2012.03.003
    [4]
    Davis A M. 1992. Shallow gas: an overview. Continental Shelf Research, 12(10): 1077–1079. doi: 10.1016/0278-4343(92)90069-V
    [5]
    Esrig M I, Kirby R C. 1977. Implications of gas content for predicting the stability of submarine slopes. Marine Geotechnology, 2(1−4): 81–100. doi: 10.1080/10641197709379771
    [6]
    Fleischer P, Orsi T, Richardson M, et al. 2001. Distribution of free gas in marine sediments: a global overview. Geo-Marine Letters, 21(2): 103–122. doi: 10.1007/s003670100072
    [7]
    Hong Yi, Wang Lizhong, Ng C W W, et al. 2017. Effect of initial pore pressure on undrained shear behaviour of fine-grained gassy soil. Canadian Geotechnical Journal, 54(11): 1592–1600. doi: 10.1139/cgj-2017-0015
    [8]
    Jin S, Nagao J, Takeya S, et al. 2006. Structural investigation of methane hydrate sediments by microfocus X-ray computed tomography technique under high-pressure conditions. Japanese Journal of Applied Physics (in Japanese), 45(24−28): L714
    [9]
    Judd A, Hovland M. 2009. Seabed Fluid Flow: The Impact on Geology, Biology and the Marine Environment. Cambridge, UK: Cambridge University Press, 15–26
    [10]
    Kim G Y, Narantsetseg B, Kim J W, et al. 2014. Physical properties and micro-and macro-structures of gassy sediments in the inner shelf of SE Korea. Quaternary International, 344: 170–180. doi: 10.1016/j.quaint.2014.01.049
    [11]
    Li Ping, Du Jun, Liu Lejun, et al. 2010. Distribution characteristics of the shallow gas in Chinese offshore seabed. The Chinese Journal of Geological Hazard and Control (in Chinese), 21(1): 69–74
    [12]
    Riboulot V, Cattaneo A, Sultan N, et al. 2013. Sea-level change and free gas occurrence influencing a submarine landslide and pockmark formation and distribution in deepwater Nigeria. Earth and Planetary Science Letters, 375: 78–91. doi: 10.1016/j.jpgl.2013.05.013
    [13]
    Robb G B N, Leighton T G, Dix J K, et al. 2006. Measuring bubble populations in gassy marine sediments: a review. In: Proceedings of the Institute of Acoustics Spring Conference. Milton Keynes, UK: Institute of Acoustics, 60–68
    [14]
    Robb G B N, Leighton T G, Humphrey V F, et al. 2007. Investigating Acoustic Propagation in Gassy Marine Sediments using a Bubbly Gel Mimic. Southampton, UK: University of Southampton
    [15]
    Sobkowicz J C, Morgenstern N R. 1984. The undrained equilibrium behaviour of gassy sediments. Canadian Geotechnical Journal, 21(3): 439–448. doi: 10.1139/t84-048
    [16]
    Sultan N, Cochonat P, Canals M, et al. 2004. Triggering mechanisms of slope instability processes and sediment failures on continental margins: a geotechnical approach. Marine Geology, 213(1−4): 291–321. doi: 10.1016/j.margeo.2004.10.011
    [17]
    Sultan N, Garziglia S. 2014. Mechanical behaviour of gas-charged fine sediments: model formulation and calibration. Géotechnique, 64(11): 851–864
    [18]
    Thomas S D. 1987. The consolidation behaviour of gassy soil [dissertation]. Oxford, UK: University of Oxford, 61–69
    [19]
    Thomas S, Hill A J, Clare M, et al. 2011. Understanding engineering challenges posed by natural hydrocarbon infiltration and the development of authigenic carbonate. In: James J, Stephan U, eds. Proceedings of Offshore Technology Conference. Houston, TX, USA: Southampton Press, 164–167
    [20]
    Tuffin M D J. 2001. The geoacoustic properties of shallow, gas-bearing sediments [dissertation]. Southampton: University of Southampton, 44–67
    [21]
    Warner G S, Nieber J L, Moore I D, et al. 1989. Characterizing macropores in soil by computed tomography. Soil Science Society of America Journal, 53(3): 653–662. doi: 10.2136/sssaj1989.03615995005300030001x
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