DOI: 10.1306/11191010069
Scopus记录号: 2-s2.0-80051495097
论文题名: Use of outcrop observations, geostatistical analysis, and flow simulation to investigate structural controls on secondary hydrocarbon migration in the Anacacho Limestone, Uvalde, Texas
作者: Wilson C.E. ; Aydin A. ; Durlofsky L.J. ; Boucher A. ; Brownlow D.T.
刊名: AAPG Bulletin
ISSN: 0149-1849
EISSN: 1558-9579
出版年: 2011
发表日期: 2011
卷: 95, 期: 7 起始页码: 1181
结束页码: 1206
语种: 英语
Scopus关键词: 3D models
; Best match
; Correlation lengths
; Geostatistical analysis
; Hydrocarbon migration
; Laser range finders
; Limestone mines
; Normal faults
; Oil flow
; Oil saturation
; Regional aquifers
; Secondary hydrocarbon migration
; Simulation parameters
; Structural control
; Structural relationship
; Variograms
; Vertical flows
; Aquifers
; Asphalt
; Fracture
; Hydrocarbons
; Limestone
; Range finders
; Stratigraphy
; Structural dynamics
; Three dimensional
; Flow simulation
; algorithm
; aquifer
; asphalt
; concentration (composition)
; data set
; fault zone
; geometry
; geostatistics
; hydrocarbon migration
; kriging
; limestone
; lithology
; magnitude
; mathematical analysis
; measurement method
; numerical model
; observational method
; outcrop
; permeability
; three-dimensional modeling
; variogram
; Texas
; United States
; Uvalde County
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: We undertake a multidisciplinary investigation into the distribution of asphalt in the Anacacho Limestone in an effort to decipher the potential roles of fractures and faults on secondary hydrocarbon migration. Field relationships between fractures, faults, and asphalt are evaluated at an asphaltic limestone mine near Uvalde, Texas. Based on their distributions, geometries, and structural relationships, we infer that normal faults provided vertical flow paths through the Anacacho Limestone, whereas strata-bound fractures enhanced lateral permeability. Variograms calculated from 75 subsurface measurements indicate that the asphalt concentration is anisotropically correlated and that the longest correlation length points in the mean strike direction of fractures and faults. A globally positioned laser rangefinder is used to measure faults and stratigraphic contacts within the mine. That data are then combined with lithologic descriptions from surrounding subsurface wells to construct a three-dimensional (3-D) model of the Anacacho Limestone. When an ordinary block-kriging algorithm populates the model with asphalt concentration estimates, the high values align along a trend that connects the two largest normal fault zones at the mine. The 3-D model provides a framework to numerically simulate secondary hydrocarbon migration. We test numerous hydrocarbon migration scenarios by adjusting simulation parameters within physically realistic ranges until producing an oil saturation field that agrees with asphalt concentration estimates. Our best match simulation indicates that oil entered the Anacacho Limestone through normal faults, that regional aquifer flow impacted oil flow, and that fractures increased the horizontal permeability of the formation by an order of magnitude along their strike direction. Copyright ©2011. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-80051495097&doi=10.1306%2f11191010069&partnerID=40&md5=03fda6b65623118af0381d2cb0daa258
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13418
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:
Wilson C.E.,Aydin A.,Durlofsky L.J.,et al. Use of outcrop observations, geostatistical analysis, and flow simulation to investigate structural controls on secondary hydrocarbon migration in the Anacacho Limestone, Uvalde, Texas[J]. AAPG Bulletin,2011-01-01,95(7)