3D Well Log Grid Creation for Seismic Data Integration
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Solution Overview
Problem
Existing methods for converting non-seismic data into seismic data domain, such as digital well-log data, often result in discontinuous representations that lose the connection between wellbore locations and their assigned trace locations, making them unsuitable for accurate seismic interpretation and visualization.
Innovation Solution
A process to create a continuous three-dimensional array of well log data, which is formatted into a dataset that can be manipulated in standard 3D-seismic interpretation software, involving the selection of initial grid spacing, assignment of well data to grid nodes, and extrapolation of data to populate all nodes, allowing for the conversion to seismic data formats like SEG-Y.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If digital well-log data is converted into SEG-Y format and loaded into seismic workstations, then the data can be processed in seismic domain, but the discontinuous nature of wellbore data destroys the connection between actual wellbore location and trace location
Solution Approach 1:
The patent introduces an intermediary data structure that acts as a bridge between wellbore data and seismic data formats. This intermediary maintains the spatial relationship information while enabling compatibility with seismic software, thus resolving the contradiction between adaptability and information preservation.
Solution Approach 2:
The patent transitions from traditional 2D well log representations to a 3D volumetric data structure. By adding the spatial dimension, the system preserves wellbore location connections while enabling seamless integration with 3D seismic interpretation software, thus maintaining information integrity while achieving versatility.
2Reliability
If well log data is converted to continuous 3D array format, then the connection between wellbore locations and data is maintained, but the data processing and formatting complexity increases
Solution Approach 1:
The patent segments the wellbore data into discrete volumetric elements that can be systematically organized in a 3D grid. This segmentation approach maintains spatial relationships while enabling modular processing, thus reducing overall system complexity despite the continuous 3D representation.
3Manufacturing precision
If grid spacing is narrowed to assign single wells to single nodes, then the precision of well location assignment improves, but the computational time and resources increase
Solution Approach 1:
The patent implements a dynamic grid spacing strategy where the grid resolution is adaptively adjusted based on well density and spatial distribution. This dynamic approach maintains high precision for well location assignment in critical areas while using coarser grids in less dense regions, thus optimizing computational efficiency without sacrificing necessary precision.
Data Source
AI summary
A process to create a well grid from an initial x, y grid spacing, by assigning x, y, z datapoints, from wells from a dataset of well data comprising attributes associated with the x, y, z datapoints, to closest x, y nodes in the grid, wherein the x, y, z datapoints from a plurality of the wells are iteratively spaced away from the closest x, y grid nodes until no more than one well is assigned to any single-well x, y grid node, and populating the respective single-well x, y grid nodes with the attributes associated with the assigned x, y, z datapoints to form a matrix of x, y, z grid nodes populated with the attributes to generate a 3D well log grid.