Experimental investigation on the geological responses and production behaviors of natural gas hydrate-bearing sediments under various hydrate saturations and depressurization strategies

被引:0
|
作者
Zhao, Yingjie [1 ,2 ]
Hu, Wei [1 ,2 ,3 ]
Dou, Xiaofeng [1 ,2 ]
Liu, Zhichao [1 ,2 ]
Ning, Fulong [1 ,2 ]
机构
[1] China Univ Geosci, Fac Engn, Wuhan 430074, Hubei, Peoples R China
[2] China Univ Geosci, Natl Ctr Int Res Deep Earth Drilling & Resource De, Wuhan 430074, Peoples R China
[3] Hubei Land Resources Vocat Coll, Wuhan 430090, Hubei, Peoples R China
基金
中国国家自然科学基金;
关键词
Hydrate-bearing sediment; Coupling effect; Depressurization; Fluid production; Sand production; Production strategy; Multi-objective optimization; METHANE HYDRATE; DISSOCIATION; RECOVERY; SAND; SEA; OPTIMIZATION; STABILITY; RESERVOIR; CARBON;
D O I
10.1016/j.apenergy.2024.123952
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Natural gas hydrate is a potential alternative energy that has attracted attention from scientific and industrial communities. Depressurization is one of the most effective approach for extracting natural gas from hydrate reservoirs in oceans. Clarifying multi-field coupling effects between geomechanical responses and fluid production in hydrate reservoirs is very important for identifying a suitable depressurization strategy for gas production. Here, we employed a customized apparatus for modeling hydrate reservoirs and their production behaviors under the multi-field coupling effect, and a series of experiments were conducted to investigate the influence of hydrate saturations (from 11.09% to 42.14%) and depressurization strategies (single depressurization of 3, 6, 10 MPa and multiple depressurization). The results show that gas production via depressurization includes pore pressure reduction, massive hydrate dissociation and residual hydrate dissociation stages. The second stage requires more attention due to the noteworthy evolutions of permeability, deformation, and sand production of hydrate-bearing sediments. Single deep depressurization of 10 MPa in the sediments with high hydrate saturations could improve gas recovery (almost triple the gas production rate) but increase engineering risks, such as sediment subsidence (up to 501.1%) and sand production (up to 426.4%), compared to that of single depressurization of 3 MPa. A marginal effect is observed due to the limited hydrate content and boundary effect of the experimental reactor, and this difference from field production cannot be neglected. Multiple depressurizations are beneficial to reservoir stability under identical depressurization amplitude. The cumulative deformations of double and triple depressurization are 89.1% and 75.4% of that of single depressurization, respectively. Considering the observed coupling responses, a multi-objective optimization method is suggested for depressurization strategy selection.
引用
收藏
页数:17
相关论文
共 50 条
  • [41] Experimental Research on Acoustic Parameters and Saturation of Gas Hydrate-Bearing Sediments
    Zhang, Jian
    Ye, Yuguang
    Hu, Gaowei
    [J]. MATERIAL DESIGN, PROCESSING AND APPLICATIONS, PARTS 1-4, 2013, 690-693 : 3299 - +
  • [42] Experimental investigation on the propagation of hydraulic fractures in massive hydrate-bearing sediments
    Shi, Hongwei
    Zhao, Haifeng
    Zhou, Jiawei
    Yu, Yanjiang
    [J]. ENGINEERING FRACTURE MECHANICS, 2023, 289
  • [43] Relative water and gas permeability for gas production from hydrate-bearing sediments
    Mahabadi, Nariman
    Jang, Jaewon
    [J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, 2014, 15 (06): : 2346 - 2353
  • [44] Discrete element simulation of the hydrate-bearing sediments mechanical behaviors under typical hydrate dissociation patterns
    Wu, Qi
    Dou, Xiaofeng
    Zhao, Yingjie
    Liu, Zhichao
    Li, Yanlong
    Yoshimoto, Norimasa
    Ning, Fulong
    [J]. GAS SCIENCE AND ENGINEERING, 2023, 115
  • [45] Experimental Investigation of Fracture Propagation in Clayey Silt Hydrate-Bearing Sediments
    Yu, Yanjiang
    Shen, Kaixiang
    Zhao, Haifeng
    [J]. ENERGIES, 2024, 17 (02)
  • [46] Experimental investigation on the effective thermal conductivities of different hydrate-bearing sediments
    Xingxun Li
    Rucheng Wei
    Qingping Li
    Weixin Pang
    Qi Fan
    Guangjin Chen
    Changyu Sun
    [J]. Petroleum Science, 2023, 20 (04) - 2487
  • [47] Optimization of Gas Production from Hydrate-Bearing Sediments with Fluctuation Characteristics
    Li, Yaobin
    Xu, Tianfu
    Xin, Xin
    Yu, Han
    Yuan, Yilong
    Zhu, Huixing
    [J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA, 2024, 23 (03) : 618 - 632
  • [48] Optimization of Gas Production from Hydrate-Bearing Sediments with Fluctuation Characteristics
    LI Yaobin
    XU Tianfu
    XIN Xin
    YU Han
    YUAN Yilong
    ZHU Huixing
    [J]. Journal of Ocean University of China, 2024, 23 (03) - 632
  • [49] Experimental investigation on the effective thermal conductivities of different hydrate-bearing sediments
    Li, Xingxun
    Wei, Rucheng
    Li, Qingping
    Pang, Weixin
    Fan, Qi
    Chen, Guangjin
    Sun, Changyu
    [J]. PETROLEUM SCIENCE, 2023, 20 (04) : 2479 - 2487
  • [50] Geomechanical responses during depressurization of hydrate-bearing sediment formation over a long methane gas production period
    Zhou, Mingliang
    Soga, Kenichi
    Yamamoto, Koji
    Huang, Hongwei
    [J]. GEOMECHANICS FOR ENERGY AND THE ENVIRONMENT, 2020, 23 (23)