Fault detection from 3D seismic data using Artificial Intelligence

Author(s):  
J. Lowell ◽  
P. Szafian
2021 ◽  
Author(s):  
Anthony Aming

Abstract See how application of a fully trained Artificial Intelligence (AI) / Machine Learning (ML) technology applied to 3D seismic data volumes delivers an unbiased data driven assessment of entire volumes or corporate seismic data libraries quickly. Whether the analysis is undertaken using onsite hardware or a cloud based mega cluster, this automated approach provides unparalleled insights for the interpretation and prospectivity analysis of any dataset. The Artificial Intelligence (AI) / Machine Learning (ML) technology uses unsupervised genetics algorithms to create families of waveforms, called GeoPopulations, that are used to derive Amplitude, Structure (time or depth depending on the input 3D seismic volume) and the new seismic Fitness attribute. We will show how Fitness is used to interpret paleo geomorphology and facies maps for every peak, trough and zero crossing of the 3D seismic volume. Using the Structure, Amplitude and Fitness attribute maps created for every peak, trough and zero crossing the Exploration and Production (E&P) team can evaluate and mitigate Geological and Geophysical (G&G) risks and uncertainty associated with their petroleum systems quickly using the entire 3D seismic data volume.


2014 ◽  
Vol 522-524 ◽  
pp. 1266-1269
Author(s):  
Zhi Hong Zheng ◽  
Jie Qing Tan ◽  
Kang Liu

Curvature, as a newly developing structural attribute, closely related to the bending of geologic body and received extensive attention of the researchers in recent years. Most positive curvature and most negative curvature in particular are widely used in fault detection and fracture prediction. In this paper, most extreme curvature was introduced into structural interpretation. Compared with the conventional curvature attributes, the advantage of most extreme curvature in fault detection was highlighted in this study. It not only clearly shown the property of fault, but also precisely indicated the location of fault plane and its variation along the strike by the dramatic change in curvature values. These findings contribute to better structural interpretation of 3D seismic data and are of great significance to hydrocarbon exploration.


2019 ◽  
Vol 7 (3) ◽  
pp. SE251-SE267 ◽  
Author(s):  
Haibin Di ◽  
Mohammod Amir Shafiq ◽  
Zhen Wang ◽  
Ghassan AlRegib

Fault interpretation is one of the routine processes used for subsurface structure mapping and reservoir characterization from 3D seismic data. Various techniques have been developed for computer-aided fault imaging in the past few decades; for example, the conventional methods of edge detection, curvature analysis, red-green-blue rendering, and the popular machine-learning methods such as the support vector machine (SVM), the multilayer perceptron (MLP), and the convolutional neural network (CNN). However, most of the conventional methods are performed at the sample level with the local reflection pattern ignored and are correspondingly sensitive to the coherent noises/processing artifacts present in seismic signals. The CNN has proven its efficiency in utilizing such local seismic patterns to assist seismic fault interpretation, but it is quite computationally intensive and often demands higher hardware configuration (e.g., graphics processing unit). We have developed an innovative scheme for improving seismic fault detection by integrating the computationally efficient SVM/MLP classification algorithms with local seismic attribute patterns, here denoted as the super-attribute-based classification. Its added values are verified through applications to the 3D seismic data set over the Great South Basin (GSB) in New Zealand, where the subsurface structure is dominated by polygonal faults. A good match is observed between the original seismic images and the detected lineaments, and the generated fault volume is tested usable to the existing advanced fault interpretation tools/modules, such as seeded picking and automatic extraction. It is concluded that the improved performance of our scheme results from its two components. First, the SVM/MLP classifier is computationally efficient in parsing as many seismic attributes as specified by interpreters and maximizing the contributions from each attribute, which helps minimize the negative effects from using a less useful or “wrong” attribute. Second, the use of super attributes incorporates local seismic patterns into training a fault classifier, which helps exclude the random noises and/or artifacts of distinct reflection patterns.


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