Pumpjack Optical Monitoring for Sensor-Free Load Control
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Solution Overview
Problem
Traditional pump control systems in oil and gas wells rely on physical sensors that are prone to failure due to mechanical wear, corrosion, and other issues, leading to inefficient operations and costly repairs, while wireless sensors have limited battery life and are susceptible to interference.
Innovation Solution
Implementing digital cameras for real-time optical monitoring and control, using image analysis algorithms to measure pump operational parameters such as speed, load, and position, which can automatically adjust pump operations and reduce maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If physical sensors are used to monitor pump position and load, then measurement precision is improved, but reliability deteriorates due to mechanical wear, corrosion, and cable damage
Solution Approach 1:
The patent replaces physical mechanical sensors with an optical monitoring system using digital cameras and image analysis algorithms. The system captures images of the pumpjack components (walking beam, crank arm, donkey head) and uses computer vision to measure position and calculate load, eliminating mechanical contact sensors that suffer from wear and corrosion.
Solution Approach 2:
The system creates optical copies (images) of the physical pumpjack components and analyzes these copies to extract measurement data. Instead of directly measuring physical quantities with sensors, the system captures visual information and processes it through image analysis to derive position and load parameters.
2Ease of operation
If wireless sensors are used as an alternative to physical sensors, then ease of operation is improved, but reliability deteriorates due to battery limitations and signal interference
Solution Approach 1:
The patent replaces wireless electronic sensors with an optical system that uses digital cameras and image processing. This eliminates battery power requirements and wireless signal transmission, providing a reliable measurement system that does not suffer from electrical or communication failures.
3Measurement precision
If physical sensors are installed to monitor pump operations, then measurement precision is improved, but device complexity increases due to specialized equipment and installation requirements
Solution Approach 1:
The optical monitoring system serves multiple functions: it captures images for position measurement, calculates pump load, monitors operational parameters, and provides visual records. A single camera system performs what would otherwise require multiple specialized sensors, reducing overall system complexity.
4Loss of information
If traditional sensor-based monitoring is used, then operational parameters can be measured, but loss of time increases due to maintenance requirements and repairs
Solution Approach 1:
The patent replaces mechanical sensors with an optical system that has no moving parts or consumable components. The digital cameras and image processing system requires no maintenance, calibration, or replacement, eliminating downtime associated with sensor maintenance while continuously collecting operational data.
Data Source
AI summary
Systems and methods provide real-time optical monitoring and control of well operations using digital cameras and image analysis. The systems and methods deploy one or more digital cameras in place of or in addition to conventional sensors to capture images of a well pump during well operations. The images may then be analyzed using image analysis algorithms and programs to measure a height, position, shape, and other measurements for certain components of the well pump relative to previous images. These image-based measurements may then be used to determine various operational parameters, such as pump speed, pump load, and other operational parameters. The operational parameters may then be processed by a pump control system to optimize pump operations based on the operational parameters.