DOI: 10.1306/06301009192
Scopus记录号: 2-s2.0-79953688545
论文题名: New hydrocarbon trap models for the diagenetic transformation of opal-CT to quartz in Neogene siliceous rocks
作者: Tsuji T. ; Masui Y. ; Yokoi S.
刊名: AAPG Bulletin
ISSN: 0149-1875
EISSN: 1558-9605
出版年: 2011
发表日期: 2011
卷: 95, 期: 3 起始页码: 449
结束页码: 477
语种: 英语
Scopus关键词: California
; Clay content
; Confining pressures
; Developed matrix
; Diagenetic alteration
; Diagenetic transformation
; Hydrocarbon exploration
; Hydrocarbon reservoir
; Hydrocarbon traps
; Monterey formation
; Neo genes
; New model
; Petrophysical properties
; Siliceous rocks
; Aluminum
; Hydrocarbons
; Quartz
; Rock pressure
; Silica
; Rocks
; confining pressure
; diagenesis
; hydrocarbon exploration
; hydrocarbon reservoir
; Neogene
; numerical model
; opal
; petrography
; porosity
; quartz
; sealing
; silica
; trap (geological structure)
; Japan
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Neogene siliceous rocks are known to act as both reservoirs and seals. However, the role of diagenetic alteration in the development of hydrocarbon reservoirs, seals, and traps in such formations is poorly understood. This study proposes two new models for hydrocarbon traps involving siliceous rock reservoirs with well-developed matrix porosity. The models are based on observations from the Yurihara and Toyotomi fields in Japan to evaluate changes in petrophysical properties associated with confining pressure and diagenetic transformations from opal-CT to quartz. When this diagenetic transformation boundary is located at depths greater than approximately 1000 m (∼3300 ft), the overlying opal-CT porcelanite layer forms a seal and the underlying clay-poor quartzose porcelanite forms a reservoir, facilitating the development of a hydrocarbon trap. The quartzose porcelanite containing less than 6% Al 2O3 (an indication of clay content) can act as a reservoir even 1000 m (3300 ft) below the boundary. When the boundary is located at depths shallower than approximately 500 m (∼1650 ft), the overlying opal-CT porcelanite is unable to form a seal because of lower confining pressures - although clay-poor quartzose porcelanite continues to be a good reservoir. However, clay-rich quartzose porcelanite intercalated with the reservoir can act as a seal. When the quartzose porcelanite contains greater than 15% Al 2O3, it has the potential to seal at the depth of the boundary. The requirement for a seal drops to greater than 8% Al 2O3 at 1000 m (3300 ft) below the boundary. Such traps have not been reported outside Japan; therefore, these models are likely to be useful for hydrocarbon exploration in siliceous rock formations elsewhere, such as in the Monterey Formation of California. Copyright © 2011. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79953688545&doi=10.1306%2f06301009192&partnerID=40&md5=2a8e518278c8e45b719a384ffc573a4c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13444
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
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Recommended Citation:
Tsuji T.,Masui Y.,Yokoi S.. New hydrocarbon trap models for the diagenetic transformation of opal-CT to quartz in Neogene siliceous rocks[J]. AAPG Bulletin,2011-01-01,95(3)