3D Wellbore Volume Visualization for Geosteering Data Interpretation
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Solution Overview
Problem
Traditional logging systems struggle to effectively convey and interpret three-dimensional resistivity and other formation data, leading to inaccuracies and increased time, cost, and risk in geosteering and hydrocarbon reserve estimation.
Innovation Solution
The development of techniques to generate and visualize three-dimensional volumes of resistivity, acoustic, and NMR data around wellbores, allowing for user-defined selections and filtering, which provides a clear and accurate representation of formation data, reducing interpretation complexities and improving data rendering quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional two-dimensional logging methods are used to display formation data, then the system complexity remains low and ease of operation is maintained, but the ability to convey three-dimensional formation information is insufficient, leading to loss of information and reduced measurement precision
Solution Approach 1:
The patent transforms two-dimensional log displays into three-dimensional visualizations by adding the radial dimension (distance from wellbore axis) to the traditional depth-azimuth plane. This allows formation parameters to be displayed as volumetric data surrounding the wellbore, enabling operators to see hydrocarbon concentrations and formation characteristics in three dimensions rather than losing radial information in 2D projections
2Loss of information
If comprehensive three-dimensional formation data is collected and displayed, then measurement precision and information completeness improve, but the device complexity and data processing requirements increase significantly
Solution Approach 1:
The patent segments the three-dimensional formation volume into discrete elements (voxels or radial zones) that can be individually processed and displayed. This segmentation allows the complex 3D data to be broken down into manageable units that can be rendered efficiently on standard display devices, reducing the computational burden while maintaining complete formation information
Solution Approach 2:
The patent introduces an intermediary processing layer that transforms raw three-dimensional sensor data into visualized formation models. This intermediary system acts as a mediator between the complex measurement tools and the display system, converting volumetric resistivity, acoustic, and NMR data into interpretable three-dimensional images that can be displayed on conventional monitors without overwhelming the processing system
3Measurement precision
If detailed three-dimensional inversion data is processed and displayed, then measurement precision improves, but the time required for data processing and interpretation increases
Solution Approach 1:
The patent performs preliminary three-dimensional inversion and processing of formation data during or immediately after the logging run, rather than requiring extensive post-processing. By pre-computing the three-dimensional formation models and preparing visualized displays in advance, the system reduces the time required for interpretation while maintaining high measurement precision through comprehensive data processing
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables quick and accurate interpretation of three-dimensional sensor data, minimizes errors, and reduces time and costs associated with data interpretation, allowing for precise geosteering and hydrocarbon reserve estimation.
Implementation Method 1
the resistivity tool, which includes one or more antennas for transmitting an electromagnetic signal into the formation and one or more antennas for receiving a formation response
Data Source
AI summary
A method is provided for processing sensor data associated with a formation. The sensor data is obtained and divided into a plurality of voxels in a three-dimensional environment. Each voxel corresponds to a location in the formation surrounding a wellbore. A selection of a first point in the three-dimensional environment corresponding to a first position along the wellbore is received. A selection of a first two-dimensional shape intersecting the first point is received. A selection of a second point corresponding to a second position different from the first position along the wellbore is received. A three-dimensional volume containing a subset of the plurality of voxels of sensor data is generated. The three-dimensional volume is bound at least by the first point and the first two-dimensional shape at a first end and by the second point at a second end. The generated three-dimensional volume is rendered for output on a display.