Quantitative uncertainty evaluation of seismic facies classification: A case study from northeast China
Quantitative uncertainty evaluation of seismic facies classification: A case study from northeast China
复制标题
地震相分类的定量不确定性评价——以东北地区为例
DOI：
10.1190/geo2015-0228.1
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发表时间：
2016-04
期刊：
影响因子：
3.3
通讯作者：
Rao, Ying
中科院分区：
文献类型：
--
作者：
Yuan, Cheng;Li, Jingye;Chen, Xiaohong;Rao, Ying
在油田勘探的早期阶段，由于物探和井资料很少，储层的表征通常具有很大的不确定性。利用地震资料进行相分类时的不确定性贯穿于地震相分类的整个过程，导致对某一地区地质特征的最终评价出现误差。为了定量评价地震相分类的不确定性，对东北某致密储层叠前地震资料和井观测资料进行了分析，计算了地震相分类过程中的不确定性。为了实现这一目标，首先使用概率多步反演方法推导出地震相分类每一步中取决于不同性质的相概率。其次，通过熵值和重建率对相概率的关联不确定性和最大后验（MAP）进行评价，以评估MAP与相序列的相似程度；
ABSTRACTReservoir characterization in the early stage of oilfield exploration generally has enormous uncertainty because few geophysical and well data are typically available. The uncertainty when classifying the facies with seismic data propagates throughout the processes of seismic facies classification, causing errors in the final evaluation of geologic features in an area. To quantitatively evaluate the uncertainty in seismic facies classification, we have analyzed prestack seismic data and well observations in a tight reservoir from northeast China and calculated the uncertainties throughout the process. To achieve this, the facies probabilities conditioned on different properties in each step of seismic facies classification were first derived using a probabilistic multistep inversion. Second, the associated uncertainty and maximum a posterior (MAP) of facies probabilities were evaluated by means of entropy and reconstruction rate, which assessed the degree of similarity between MAP and facies seque...
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影响因子：
--
作者：
SHANNON, CE
通讯作者：
SHANNON, CE
影响因子：
--
作者：
SHANNON, CE
通讯作者：
SHANNON, CE
DOI：
10.1190/segam2014-0939.1
发表时间：
2014-08
期刊：
Seg Technical Program Expanded Abstracts
影响因子：
--
作者：
K. Schlanser;D. Grana;E. Campbell-Stone
通讯作者：
K. Schlanser;D. Grana;E. Campbell-Stone
影响因子：
3.3
作者：
J. Gunning;M. Glinsky
通讯作者：
J. Gunning;M. Glinsky
DOI：
10.1109/9780470544242.ch1
发表时间：
1993
期刊：
--
影响因子：
--
作者：
N. Sloane;A. Wyner
通讯作者：
N. Sloane;A. Wyner