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Seafloor subsidence induced by gas recovery from a hydrate-bearing sediment using multiple well system
Jin, Guangrong1,2; Lei, Hongwu3; Xu, Tianfu2; Liu, Lihua1; Xin, Xin2; Zhai, Haizhen1; Liu, Changling4
2019-09-01
发表期刊MARINE AND PETROLEUM GEOLOGY
ISSN0264-8172
卷号107页码:438-450
通讯作者Xu, Tianfu(Tianfu_Xu@jlu.edu.cn)
摘要The response behavior of the methane exploitation from natural gas hydrate (NGH) using multiple well system is complex and needs to be investigated, as gas production from a single vertical well generally cannot meet commercial demand. This study numerically investigates the production performance and geomechanical response of an unconfined hydrate deposit in Shenhu area, South China Sea, under single and multiple vertical well conditions. For a single vertical well with a mild constant bottom-hole pressure, gas production is relatively stable. However, seafloor subsidence exhibits an initial rapid drop and a subsequent mild drop stage. The vertical displacement is highly developed at the top and bottom of the production zone. The results from doublet and triplet vertical wells indicate that both the gas and water production and seafloor subsidence increase with the increase in number of production wells. The superimposition of subsidence leads to a deterioration in subsidence and the change in location for the largest subsidence, which may affect the risk location of well instability. The interference of pore pressure and subsidence increases with the decrease in well spacing. However, gas production decreases and water production changes insignificantly. Furthermore, a same subsidence at seafloor cannot indicate the same evolution of subsidence in the vertical and lateral direction. The results presented in this study help in balancing the production and subsidence of the NGH exploitation in complex well configurations.
关键词Natural gas hydrate Gas recovery Geomechanical response Multiple wells system Well spacing
DOI10.1016/j.marpetgeo.2019.05.008
关键词[WOS]SOUTH CHINA SEA ; METHANE-HYDRATE ; SHENHU AREA ; MECHANICAL-PROPERTIES ; BEHAVIOR ; CORE ; DEPRESSURIZATION ; PERMEABILITY ; DISSOCIATION ; COMPRESSION
收录类别SCI
语种英语
资助项目National Natural Science Foundation of China[41602255] ; National Natural Science Foundation of China[41776071] ; National Key Research and Development Program of China[2017YFC0307304] ; Foundation of Chinese Academy of Sciences Key Laboratory of Gas Hydrate[y807jd1001] ; Foundation of Chinese Academy of Sciences Key Laboratory of Gas Hydrate[y807je1001]
WOS研究方向Geology
项目资助者National Natural Science Foundation of China ; National Key Research and Development Program of China ; Foundation of Chinese Academy of Sciences Key Laboratory of Gas Hydrate
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000484871100030
出版者ELSEVIER SCI LTD
引用统计
被引频次:33[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/25559
专题中国科学院广州能源研究所
通讯作者Xu, Tianfu
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
2.Jilin Univ, Key Lab Groundwater Resources & Environm, Minist Educ, Changchun 130021, Jilin, Peoples R China
3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
4.Qingdao Inst Marine Geol, Key Lab Gas Hydrate, Minist Nat Resources, Qingdao 266071, Shandong, Peoples R China
第一作者单位中国科学院广州能源研究所
推荐引用方式
GB/T 7714
Jin, Guangrong,Lei, Hongwu,Xu, Tianfu,et al. Seafloor subsidence induced by gas recovery from a hydrate-bearing sediment using multiple well system[J]. MARINE AND PETROLEUM GEOLOGY,2019,107:438-450.
APA Jin, Guangrong.,Lei, Hongwu.,Xu, Tianfu.,Liu, Lihua.,Xin, Xin.,...&Liu, Changling.(2019).Seafloor subsidence induced by gas recovery from a hydrate-bearing sediment using multiple well system.MARINE AND PETROLEUM GEOLOGY,107,438-450.
MLA Jin, Guangrong,et al."Seafloor subsidence induced by gas recovery from a hydrate-bearing sediment using multiple well system".MARINE AND PETROLEUM GEOLOGY 107(2019):438-450.
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