Well String Tubular Antenna Layout for Annular Data Transmission
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Solution Overview
Problem
Existing devices fail to efficiently monitor and transmit data across various annular spaces and different depths within oil or gas wells without requiring complex installations or dismantling, particularly for casing strings.
Innovation Solution
A tubular component with a transmitting antenna and reading antennas, eccentrically positioned, generates and detects intentional electromagnetic field disturbances to facilitate communication between well components, using electromagnetic field variations to encode and decode data messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If monitoring devices using cables installed on pipes are used, then data can be transmitted, but installation becomes particularly difficult for casing strings
Solution Approach 1:
The patent replaces mechanical cable-based data transmission with electromagnetic field-based communication. The transmitting antenna generates electromagnetic fields that penetrate pipe walls to communicate with reading antennas in annular spaces, eliminating the need for physical cable installation on casing strings while maintaining reliable data transmission capability.
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary medium for data transmission between the transmitting antenna inside pipes and reading antennas in annular spaces. This intermediary enables communication without direct physical contact or cable connection, solving the installation difficulty while preserving data transmission reliability.
2Adaptability or versatility
If existing data transmission devices are used, then communication within a single string is possible, but data transmission between strings and monitoring of various annular spaces is not enabled
Solution Approach 1:
The patent creates a universal communication system where transmitting antennas in different tubular strings can communicate with reading antennas in various annular spaces through electromagnetic field penetration. This multi-functional capability enables both intra-string and inter-string communication, as well as monitoring of multiple annular spaces simultaneously, eliminating the limitations of existing single-string devices.
Solution Approach 2:
The patent extends communication from a single-dimension (within one string) to multi-dimensional space by enabling electromagnetic field penetration across multiple tubular strings and annular spaces. The system operates in radial, axial, and inter-string dimensions simultaneously, allowing comprehensive monitoring coverage that existing devices cannot achieve.
3Measurement precision
If monitoring is performed at multiple depths and annular spaces, then comprehensive well conditions are captured, but complex equipment installation at wellhead or bottom hole is required
Solution Approach 1:
The patent divides the monitoring system into distributed segments: transmitting antennas in individual tubular components and reading antennas in specific annular spaces. Each segment operates independently to monitor local conditions, and data from all segments is integrated to provide comprehensive well monitoring. This segmentation eliminates the need for complex centralized equipment at wellhead or bottom hole while maintaining monitoring comprehensiveness.
Solution Approach 2:
The patent enables each tubular component with a transmitting antenna to independently generate electromagnetic fields for communication with reading antennas in surrounding annular spaces. This self-service capability allows distributed monitoring without requiring complex external equipment installation, as each component autonomously contributes to comprehensive well conditions monitoring.
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
Enables efficient data transmission and monitoring across multiple annular spaces and depths within oil or gas wells with reduced installation complexity and energy expenditure.
Implementation Method 1
excitation electronics connected to the transmitting antenna and arranged for the transmitting antenna to generate an electromagnetic field having a first electromagnetic characteristic
Implementation Method 2
reading electronics connected to the first reading antenna and arranged to detect temporal and intentional variations in the electromagnetic field according to said first characteristic
Data Source
AI summary
A tubular component for a well pipe including a transmitting antenna, a first reading antenna axially spaced apart from the transmitting antenna by a distance D, excitation electronics connected to the transmitting antenna and arranged to emit an electromagnetic field E having a first electromagnetic characteristic, reading electronics connected to the first reading antenna and arranged to detect temporal and intentional variations in the electromagnetic field according to the first characteristic.