DOI: 10.1306/02261312120
Scopus记录号: 2-s2.0-84883594231
论文题名: Building a three-dimensional near-surface geologic and petrophysical model based on borehole data: A case study from Chémery, Paris Basin, France
作者: Sala P. ; Frehner M. ; Tisato N. ; Adrian Pfiffner O.
刊名: AAPG Bulletin
ISSN: 0149-1662
EISSN: 1558-9392
出版年: 2013
发表日期: 2013
卷: 97, 期: 8 起始页码: 1303
结束页码: 1324
语种: 英语
Scopus关键词: Fault interpretation
; Laboratory measurements
; Near-surface geology
; Petrophysical models
; Seismic reflection survey
; Structural frameworks
; Structural interpretation
; Threedimensional (3-d)
; Research laboratories
; Seismic waves
; Velocity
; Wave propagation
; Well logging
; Three dimensional
; borehole
; fault
; geology
; geometry
; P-wave
; S-wave
; seismic data
; seismic reflection
; seismic velocity
; three-dimensional modeling
; velocity
; France
; Paris Basin
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: The fact that velocity models based on seismic reflection surveys commonly do not consider the near-surface geology necessitates filling the gap between the top of a velocity model and the surface of the Earth. In this study, we present a new workflow to build a shallow geologic model based exclusively on borehole data and corroborated by laboratory measurements. The study area is in Chemery (France), located at the southwestern border of the Paris Basin, where a large amount of borehole data is publicly available. The workflow starts with identifying lithologic interfaces in the boreholes and interpolating them between the boreholes. The three-dimensional (3-D) geometry of the lithologies then allows interpretation of the position, orientation, and offset of fault planes. Given the importance of the fault interpretation in the modeling process, a combination of different approaches is used to obtain the most reasonable structural framework. After creating a 3-D grid, the resulting 3-D structural model is populated with upscaled velocity logs from the boreholes, yielding the final near-surface P-wave velocity model. To better constrain the velocity model, we conducted laboratory measurements of P-and S-wave velocities in dry and water-saturated conditions on all lithologies in the model. The laboratory data were used to populate the 3-D near-surface model with V p/Vs ratio values. The presented workflow accounts for one-dimensional borehole data and is much more iterative and time-consuming than workflows based on two-dimensional seismic sections. Nevertheless, the workflow results in a robust 3-D near-surface model allowing for structural interpretations and revealing the 3-D seismic velocity field. Copyright © 2013. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883594231&doi=10.1306%2f02261312120&partnerID=40&md5=c53e50b9963959f74eb3fe74d103b6d4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13232
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:
Sala P.,Frehner M.,Tisato N.,et al. Building a three-dimensional near-surface geologic and petrophysical model based on borehole data: A case study from Chémery, Paris Basin, France[J]. AAPG Bulletin,2013-01-01,97(8)