Seafloor subsidence induced by gas recovery from a hydrate-bearing sediment using multiple well system

doi:10.1016/j.marpetgeo.2019.05.008

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Seafloor subsidence induced by gas recovery from a hydrate-bearing sediment using multiple well system
	Jin, Guangrong ; Lei, Hongwu ; Xu, Tianfu ; Liu, Lihua ; Xin, Xin ; Zhai, Haizhen ; Liu, Changling
刊名	MARINE AND PETROLEUM GEOLOGY
	2019
卷号	107 期号:-页码:438-450
关键词	Natural gas hydrate Gas recovery Geomechanical response Multiple wells system Well spacing
ISSN号	0264-8172
DOI	10.1016/j.marpetgeo.2019.05.008
英文摘要	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.
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000484871100030
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/14902]
专题	岩土力学所知识全产出_期刊论文
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
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.