GSTDTAP  > 地球科学
DOI10.1306/10261818055
Unsupervised seismic facies classification applied to a presalt carbonate reservoir, Santos Basin, offshore Brazil
Ariza Ferreira, Danilo Jotta1; Lupinacci, Wagner Moreira1; Neves, Igor de Andrade1; Rodrigues Zambrini, Joao Paulo1; Ferrari, Andre Luiz1; Pierantoni Gamboa, Luiz Antonio1; Azul, Maria Olho2
2019-04-01
发表期刊AAPG BULLETIN
ISSN0149-1423
EISSN1558-9153
出版年2019
卷号103期号:4页码:997-1012
文章类型Article
语种英语
国家Brazil
英文摘要

Mapping of seismic and lithological facies is a very complex process, especially in regions with low seismic resolution caused by extensive salt layers, even when only an exploratory view of the distribution of the reservoir facies is required. The aim of this study was to apply multi-attribute analysis using an unsupervised classification algorithm to map the carbonate facies of an exploratory presalt area located in the Outer high region of the Santos Basin. The interval of interest is the Barra Velha Formation, deposited during the Aptian, which represents an intercalation of travertines, stromatolites, grainstones and spherulitic packstones, mudstones, and authigenic shales, which were deposited under hypersaline lacustrine conditions during the sag phase. A set of seismic attributes, calculated from a poststack seismic amplitude volume, was used to characterize geological and structural features of the study area. We applied k-means clustering in an approach for unsupervised seismic facies classification. Our results show that at least three seismic facies can be differentiated, representing associations of buildup lithologies, aggradational or progradational carbonate platforms, and debris facies. We quantitatively evaluated the seismic facies against petrophysical properties (porosity and permeability) from available well logs. Seismic patterns associated with the lithologies helped identify new exploration targets.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000464593300009
WOS关键词LACUSTRINE ; SETTINGS
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/181869
专题地球科学
作者单位1.Univ Fed Fluminense, Dept Geol & Geophys, Niteroi, RJ, Brazil;
2.Petrogal Brasil, Rio De Janeiro, RJ, Brazil
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GB/T 7714
Ariza Ferreira, Danilo Jotta,Lupinacci, Wagner Moreira,Neves, Igor de Andrade,et al. Unsupervised seismic facies classification applied to a presalt carbonate reservoir, Santos Basin, offshore Brazil[J]. AAPG BULLETIN,2019,103(4):997-1012.
APA Ariza Ferreira, Danilo Jotta.,Lupinacci, Wagner Moreira.,Neves, Igor de Andrade.,Rodrigues Zambrini, Joao Paulo.,Ferrari, Andre Luiz.,...&Azul, Maria Olho.(2019).Unsupervised seismic facies classification applied to a presalt carbonate reservoir, Santos Basin, offshore Brazil.AAPG BULLETIN,103(4),997-1012.
MLA Ariza Ferreira, Danilo Jotta,et al."Unsupervised seismic facies classification applied to a presalt carbonate reservoir, Santos Basin, offshore Brazil".AAPG BULLETIN 103.4(2019):997-1012.
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