Magnetic Field Ratio Analysis for Conductive Structure Positioning
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Solution Overview
Problem
Current methods for determining the position of conductive structures during oil and gas exploration, such as metal piping, do not effectively utilize the ratio of minimum to maximum magnetic fields measured, limiting accurate distance and azimuthal angle calculations.
Innovation Solution
A system with orthogonal receiver sensors on a drilling tool processes magnetic-related values from signals induced by current flowing on conductive structures, calculating distance and azimuthal angles using ratios of tangential and normal magnetic field components, enabling precise positioning of conductive structures like casings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to determine position of conductive structures, then the measurement process is simple, but the measurement precision of distance and azimuthal angle is insufficient
Solution Approach 1:
The patent transforms the magnetic field measurement data by calculating ratios of magnetic field components (e.g., tangential to normal components) to derive distance and azimuthal angle. This parameter transformation enables precise determination of conductive structure position without requiring complex additional hardware
Solution Approach 2:
The patent replaces complex mechanical positioning systems with magnetic field-based detection. By using orthogonal receiver sensors to measure magnetic field components and applying mathematical ratios, the system achieves accurate positioning without mechanical measurement devices
2Measurement precision
If the ratio of minimum to maximum magnetic fields is utilized, then the distance calculation accuracy is improved, but the computational complexity increases
Solution Approach 1:
The patent uses ratios of magnetic field components (such as tangential to normal components) as transformed parameters to calculate distance and azimuthal angle. This mathematical transformation improves measurement accuracy while keeping computational requirements manageable through standardized ratio calculations
3Measurement precision
If orthogonal receiver sensors are used to detect magnetic field components, then the position determination accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent divides the magnetic field detection into orthogonal components using separate receiver sensors oriented at right angles to each other. This segmentation allows independent measurement of different magnetic field components, which are then combined through ratio calculations to determine precise position and orientation
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 allows for accurate determination of conductive structure positions and angles relative to drilling tools, enhancing drilling operations by providing critical geological data for improved exploration and drilling efficiency.
Implementation Method 1
signals corresponding to received signals in two receiver sensors of a tool disposed below the earth's surface... signals induced by current flowing on conductive structures
Data Source
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AI summary
Various embodiments include apparatus and methods to detect and locate conductive structures below the earth's surface. Tools can be configured with receiving sensors arranged to receive signals generated from a conductive structure in response to a current flowing on the conductive structure. Magnetic-related values from the signals can be processed, relative to the tool, to determine a position of a conductive structure from which the signal was generated in response to current flowing on the conductive structure. Additional apparatus, systems, and methods are disclosed.