Multi-Stack Seismic Analysis for Lithology Prediction
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Solution Overview
Problem
Conventional seismic data analysis methods are limited as they rely on selecting a single offset stack or angle stack, potentially missing geological attributes present in other volumes, leading to incomplete interpretations of lithology and stratigraphic architecture.
Innovation Solution
A computer-implemented method and system that analyze multiple offset stacks and angle stacks to identify and compare geologic features, determining discrepancies and similarities to enhance lithology prediction and stratigraphic interpretations by leveraging energy propagation data from various source-receiver offsets and angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single offset stack or angle stack is selected for analysis, then the interpretation process is simplified and faster, but geological attributes present in other volumes may be missed leading to incomplete interpretations
Solution Approach 1:
The patent divides the seismic analysis into multiple offset stacks and angle stacks, each representing different geometric perspectives of the same geologic volume. By segmenting the data into distinct stacks with unique source-receiver offset ranges or angle ranges, the system preserves different geological attributes in separate volumes that can be individually analyzed and then integrated for comprehensive interpretation
Solution Approach 2:
The patent introduces an additional dimension of analysis by organizing seismic data not just by spatial location but by geometric parameters (offset ranges and angle ranges). This creates a multi-dimensional data structure where each stack represents a different geometric slice through the same subsurface volume, allowing interpreters to access geological attributes that manifest differently across various geometric dimensions
2Loss of information
If multiple offset stacks and angle stacks are analyzed to capture all geological attributes, then interpretation completeness improves, but the complexity of the analysis process increases
Solution Approach 1:
The patent creates a universal analysis framework that can process multiple offset stacks and angle stacks using the same methodological approach. The system applies consistent attribute extraction, feature identification, and comparison procedures across all stacks, allowing the same analytical tools to handle diverse geometric perspectives without requiring separate specialized methods for each stack type
Solution Approach 2:
The patent merges the results from multiple offset stacks and angle stacks by identifying and comparing corresponding geologic features across different volumes. By integrating findings from multiple stacks and synthesizing their complementary geological attributes, the system produces a unified comprehensive interpretation that leverages the strengths of each individual stack while reducing overall analytical complexity
Data Source
AI summary
Geologic information may be extracted from multiple offset stacks and/or angle stacks. Offset stacks and/or angle stacks may be received that represent energy that has propagated through a geologic volume of interest from energy sources to energy receivers. Attribute volumes associated with individual source-receiver offsets and/or source-receiver angles may be determined based on corresponding offset stacks and/or angle stacks. For individual offset stacks or angle stacks, corresponding sets of geologic features represented in the attribute volumes may be identified. The sets of geologic features corresponding to the different offset stacks and/or angle stacks to may be compared to determine discrepancies and/or similarities between the sets of geologic features corresponding to the different offset stacks and/or angle stacks. Stratigraphic interpretations, stratigraphic predictions, and/or other interpretations and/or predictions may be determined based on causes of the discrepancies and/or similarities.