Paleogeographic Model Validation Using Seismic Attribute Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for paleogeographic reconstruction in sedimentary basins face significant uncertainties due to the use of data with varying accuracy, particularly in total relief maps, which affect the reliability of hydrocarbon reservoir predictions.
Innovation Solution
A method involving the iterative calibration of paleogeographic surfaces using seismic attributes to reduce uncertainties, combining decompacted thickness surfaces with total relief maps and seismic data to generate an updated paleogeographic surface, thereby improving the accuracy of geological models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional paleogeographic reconstruction methods are used, then the process is simpler, but the reliability and accuracy of the models are reduced due to data uncertainties
Solution Approach 1:
The patent combines multiple data sources (seismic data, geological data, decompacted thickness surfaces, total relief maps) into a unified paleogeographic model. This integration allows the model to leverage the strengths of each data type while compensating for their individual weaknesses, thereby improving reliability without proportionally increasing complexity
Solution Approach 2:
The patent implements an iterative feedback mechanism where the paleogeographic model is repeatedly refined by comparing predicted seismic attributes with actual observed seismic data. This feedback loop continues until the model achieves sufficient accuracy, systematically reducing uncertainties while maintaining a manageable process through automated iteration
2Measurement precision
If data with varying accuracy is used for reconstruction, then the process is faster and easier, but the measurement precision and reliability are reduced
Solution Approach 1:
The patent performs preliminary integration of multiple data sources before final model generation. By pre-processing and combining seismic data, geological data, decompacted thickness surfaces, and total relief maps in advance, the system reduces the time needed for iterative refinement and validation, thereby improving precision without proportionally increasing total processing time
Solution Approach 2:
The patent employs a dynamic iterative process where the model is continuously refined based on feedback from seismic attribute comparison. The number of iterations and refinement steps can be adjusted dynamically based on the required precision and available time, allowing flexible optimization between measurement precision and time investment
Data Source
AI summary
Examples of methods and systems are disclosed. The methods may include obtaining, by a geological modeling system, geological data and seismic data regarding a subsurface region of interest, generating a paleogeographic surface using the geological data and the seismic data, and selecting an adjustable geological attribute from the paleogeographic surface. The methods may also include generating, using a seismic interpretation system coupled to the geological modeling system, a surface of a seismic attribute using the seismic data, where the seismic attribute is related to the adjustable geological attribute. The methods may further include generating, by the geological modeling system, an updated paleogeographic surface, iteratively or recursively, until a stopping condition is reached, based on a difference between the paleogeographic surface and the surface of the seismic attribute, and determining a validated geological model of the subsurface region of interest based, at least in part, on the updated paleogeographic surface.