globalchange  > 过去全球变化的重建
DOI: 10.1306/071411U038
Scopus记录号: 2-s2.0-84858957918
论文题名:
Computer modeling bioturbation: The creation of porous and permeable fluid-flow pathways
作者: La Croix A.D.; Gingras M.K.; Dashtgard S.E.; Pemberton S.G.
刊名: AAPG Bulletin
ISSN: 0149-1786
EISSN: 1558-9516
出版年: 2012
发表日期: 2012
卷: 96, 期:3
起始页码: 545
结束页码: 556
语种: 英语
Scopus关键词: Bioturbation ; Bioturbation intensity ; Computer modeling ; Flow network ; Fluid-flow pathways ; Reserve estimates ; Subsurface aquifers ; Surrounding matrix ; Anoxic sediments ; Aquifers ; Computer simulation ; Hydrogeology ; Petroleum reservoirs ; Sedimentology ; Stratigraphy ; Igneous rocks ; bioturbation ; burrow ; computer ; connectivity ; exploitation ; fluid flow ; ichnofacies ; marine sediment ; permeability ; porous medium ; probability ; sedimentary rock ; trace fossil ; volume ; Cruziana ; Planolites ; Skolithos ; Thalassinoides ; Zoophycos
Scopus学科分类: Energy ; Earth and Planetary Sciences
英文摘要: Computer modeling of trace fossils (Skolithos, Thalassinoides, Planolites, Zoophycos, and Phycosiphori) and ichnofacies [Skolithos, Cruziana, and Zoophycos ichnofacies) is undertaken to assess the impact of bioturbation on porosity and permeability trends in sedimentary media. Model volumes are randomly populated with the digitally modeled trace fossils to test for connectivity between burrows. The probability of vertical and lateral interconnections is compared with bioturbation intensity. The results of the simulations indicate that biogenic flow networks develop at low bioturbation intensity, between 10 and 27.5% bioturbation (BI-2]. However, the efficiency of connectivity is controlled by the architecture of the burrows. For all trace-fossil and ichnofacies models, regardless of tracefossil orientation, continuous horizontal and vertical connectivity across the sediment volume is achieved within a 0 to 10% range in bioturbation. In subsurface aquifers and petroleum reservoirs, the presence of bioturbation can significantly influence fluid flow. In particular, for marine sedimentary rocks, where burrows are more permeable than the surrounding matrix, a greater degree of three-dimensional burrow connectivity can produce preferred fluid-flow pathways through the rock. Recognizing these flow conduits may enable optimization of resource exploitation or may contribute to increasing reserve estimates from previously interpreted nonreservoir rock.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84858957918&doi=10.1306%2f071411U038&partnerID=40&md5=2145e14b32db21be4dd1617e3b73be7f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13356
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:
La Croix A.D.,Gingras M.K.,Dashtgard S.E.,et al. Computer modeling bioturbation: The creation of porous and permeable fluid-flow pathways[J]. AAPG Bulletin,2012-01-01,96(3)
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