DOI: 10.1306/03161211093
Scopus记录号: 2-s2.0-84867656916
论文题名: Determining the source and genetic fingerprint of natural gases using noble gas geochemistry: A northern appalachian basin case study
作者: Hunt A.G. ; Darrah T.H. ; Poreda R.J.
刊名: AAPG Bulletin
ISSN: 0149-1733
EISSN: 1558-9463
出版年: 2012
发表日期: 2012
卷: 96, 期: 10 起始页码: 1785
结束页码: 1811
语种: 英语
Scopus关键词: Appalachian basin
; Black River
; Devonians
; Gas accumulation
; Genetic fingerprints
; Genetic groups
; Genetic sources
; In-situ
; Mass migration
; Mineral grains
; Natural gas reserves
; Natural gas reservoir
; New York State
; Noble gas
; Ordovician
; Production fields
; Production level
; Source rocks
; Thermal condition
; Thermogenic gas
; Energy resources
; Gases
; Heavy water
; Hydraulic fracturing
; Methane
; Natural gas
; Natural gas well drilling
; Neon
; Shale
; Argon
; Devonian
; energy resource
; geochemistry
; natural gas
; noble gas
; Silurian
; source rock
; Appalachian Basin
; New York [United States]
; United States
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Silurian and Devonian natural gas reservoirs present within New York state represent an example of unconventional gas accumulations within the northern Appalachian Basin. These unconventional energy resources, previously thought to be noneconomically viable, have come into play following advances in drilling (i.e., horizontal drilling) and extraction (i.e., hydraulic fracturing) capabilities. Therefore, efforts to understand these and other domestic and global natural gas reserves have recently increased. The suspicion of fugitive mass migration issues within current Appalachian production fields has catalyzed the need to develop a greater understanding of the genetic grouping (source) and migrational history of natural gases in this area. We introduce new noble gas data in the context of published hydrocarbon carbon (C 1,C 2+) (δ 13C) data to explore the genesis of thermogenic gases in the Appalachian Basin. This study includes natural gases from two distinct genetic groups: group 1, Upper Devonian (Marcellus shale and Canadaway Group) gases generated in situ, characterized by early mature (Δ 13C[c 1 - c 2][δ 13C 1 - δ 13C 2]: <-9%o), isotopically light methane, with low ( 4He) (average, 1 × 10 -3 cc/cc) elevated 4He/ 40Ar * and 21Ne */ 40Ar * (where the asterisk denotes excess radiogenic or nucleogenic production beyond the atmospheric ratio), and a variable, atmospherically (airsaturated- water) derived noble gas component; and group 2, a migratory natural gas that emanated from Lower Ordovician source rocks (i.e., most likely, Middle Ordovician Trenton or Black River group) that is currently hosted primarily in Lower Silurian sands (i.e., Medina or Clinton group) characterized by isotopically heavy, mature methane (Δ 13C [c1-C2] [δ 13C 1 - δ 13C 2]: >3%o), with high ( 4He) (average, 1.85 × 10 -3 cc/cc) 4He/ 40Ar * and 21Ne */ 40Ar * near crustal production levels and elevated crustal noble gas content (enriched 4He, 21Ne *, 40Ar *). Because the release of each crustal noble gas (i.e., He, Ne, Ar) from mineral grains in the shale matrix is regulated by temperature, natural gases obtain and retain a record of the thermal conditions of the source rock. Therefore, noble gases constitute a valuable technique for distinguishing the genetic source and post-genetic processes of natural gases. © 2012. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84867656916&doi=10.1306%2f03161211093&partnerID=40&md5=2a21ff241f5a29b372381ecc1ecca62f
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13303
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
There are no files associated with this item.
Recommended Citation:
Hunt A.G.,Darrah T.H.,Poreda R.J.. Determining the source and genetic fingerprint of natural gases using noble gas geochemistry: A northern appalachian basin case study[J]. AAPG Bulletin,2012-01-01,96(10)