DOI: 10.1306/06141312191
Scopus记录号: 2-s2.0-84898062337
论文题名: Constraining the origin of reservoirs formed by sandstone intrusions: Insights from heavy mineral studies of the Eocene in the Forties area, United Kingdom central North Sea
作者: Morton A. ; McFadyen S. ; Hurst A. ; Pyle J. ; Rose P.
刊名: AAPG Bulletin
ISSN: 0149-1557
EISSN: 1558-9287
出版年: 2014
发表日期: 2014
卷: 98, 期: 3 起始页码: 545
结束页码: 561
语种: 英语
Scopus关键词: Aquifers
; Deposition
; Fluidization
; Garnets
; Geochemistry
; Geometry
; Hydrocarbons
; Minerals
; Petroleum deposits
; Sand
; Seismology
; Water injection
; Channel systems
; Deep-water channels
; Development wells
; Geochemical characteristic
; Geochemical data
; Injected sandstones
; Provenance studies
; Sandstone intrusions
; Sandstone
; aquifer
; fluidization
; garnet
; heavy mineral
; hydrocarbon
; igneous intrusion
; Paleocene
; pore pressure
; provenance
; sandstone
; seismic data
; Atlantic Ocean
; Forties Field
; North Sea
; United Kingdom
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: The presence of hydrocarbon-bearing sandstones within the Eocene of the Forties area was first documented in 1985, when a Forties field (Paleocene) development well discovered the Brimmond field. Further hydrocarbons in the Eocene were discovered in the adjacent Maule field in 2009. Reservoir geometry derived from three-dimensional seismic data has provided evidence for both a depositional and a sand injectite origin for the Eocene sandstones. The Brimmond field is located in a deepwater channel complex that extends to the southeast, whereas the Maule field sandstones have the geometry of an injection sheet on the updip margin of the Brimmond channel system with a cone-shape feature emanating from the top of the Forties Sandstone Member (Paleocene). The geometry of the Eocene sandstones in the Maule field indicates that they are intrusive and originated by the fluidization and injection of sand during burial. From seismic and borehole data, it is unclear whether the sand that was injected to form the Maule reservoir was derived from depositional Eocene sandstones or from the underlying Forties Sandstone Member. These two alternatives are tested by comparing the heavy mineral and garnet geochemical characteristics of the injectite sandstones in the Maule field with the depositional sandstones of the Brimmond field and the Forties sandstones of the Forties field. The study revealed significant differences between the sandstones in the Forties field and those of the Maule and Brimmond fields), both in terms of heavy mineral and garnet geochemical data. The Brimmond-Maule and Forties sandstones therefore have different provenances and are genetically unrelated, indicating that the sandstones in the Maule field did not originate by the fluidization of Forties sandstones. By contrast, the provenance characteristics of the depositional Brimmond sandstones are closely comparable with sandstone intrusions in the Maule field. We conclude that the injectites in the Maule field formed by the fluidization of depositional Brimmond sandstones but do not exclude the important function of water from the huge underlying Forties Sandstone Member aquifer as the agent for developing the fluid supply and elevating pore pressure to fluidize and inject the Eocene sand. The study has demonstrated that heavy mineral provenance studies are an effective method of tracing the origin of injected sandstones, which are increasingly being recognized as an important hydrocarbon play. Copyright © 2014. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898062337&doi=10.1306%2f06141312191&partnerID=40&md5=1bba70d36189d8dc744d5c86653e4ac6
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13128
Appears in Collections: 过去全球变化的重建 科学计划与规划 全球变化的国际研究计划 影响、适应和脆弱性 气候变化与战略 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:
Morton A.,McFadyen S.,Hurst A.,et al. Constraining the origin of reservoirs formed by sandstone intrusions: Insights from heavy mineral studies of the Eocene in the Forties area, United Kingdom central North Sea[J]. AAPG Bulletin,2014-01-01,98(3)