DOI: 10.1002/grl.50809
论文题名: Gas hydrate formation rates from dissolved-phase methane in porous laboratory specimens
作者: Waite W.F. ; Spangenberg E.
刊名: Geophysical Research Letters
ISSN: 0094-8652
EISSN: 1944-8383
出版年: 2013
卷: 40, 期: 16 起始页码: 4310
结束页码: 4315
语种: 英语
英文关键词: dissolved phase
; formation rate
; hydrate
; methane
Scopus关键词: Circulating waters
; dissolved phase
; Formation rates
; Hydrate formation
; Hydrate saturation
; Naturally occurring
; Rate-limiting steps
; Unconsolidated sands
; Dissolution
; Energy resources
; Hydrates
; Hydration
; Laboratories
; Methane
; Gas hydrates
; dissolved gas
; energy efficiency
; gas hydrate
; methane
; porous medium
英文摘要: Marine sands highly saturated with gas hydrates are potential energy resources, likely forming from methane dissolved in pore water. Laboratory fabrication of gas hydrate-bearing sands formed from dissolved-phase methane usually requires 1-2 months to attain the high hydrate saturations characteristic of naturally occurring energy resource targets. A series of gas hydrate formation tests, in which methane-supersaturated water circulates through 100, 240, and 200,000 cm3 vessels containing glass beads or unconsolidated sand, show that the rate-limiting step is dissolving gaseous-phase methane into the circulating water to form methane-supersaturated fluid. This implies that laboratory and natural hydrate formation rates are primarily limited by methane availability. Developing effective techniques for dissolving gaseous methane into water will increase formation rates above our observed (1 ± 0.5) × 10-7 mol of methane consumed for hydrate formation per minute per cubic centimeter of pore space, which corresponds to a hydrate saturation increase of 2 ± 1% per day, regardless of specimen size. Key Points Hydrate formation from methane dissolved in water is efficient and rapid Dissolving methane into water is the rate-limiting step in hydrate formation In the lab or field, focus on water take-up of methane to assess formation rate. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881650290&doi=10.1002%2fgrl.50809&partnerID=40&md5=d159266663b94efed54230c1029c905b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5916
Appears in Collections: 气候减缓与适应
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作者单位: U.S. Geological Survey, 384 Woods Hole Rd., Woods Hole, MA 02543, United States
Recommended Citation:
Waite W.F.,Spangenberg E.. Gas hydrate formation rates from dissolved-phase methane in porous laboratory specimens[J]. Geophysical Research Letters,2013-01-01,40(16).