Pumpjack Condition Detection Using PV Diagram Feature Analysis
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Solution Overview
Problem
Monitoring pumpjack conditions using Pressure-Volume diagrams is time-consuming and costly due to abundance, redundancy, complexity, and uniqueness issues, making it difficult to quickly identify abnormal conditions.
Innovation Solution
A system that calculates features from Pressure-Volume diagrams using a feature calculator, separates normal from abnormal conditions using a hierarchical decision tree, and generates a compound indicator to provide user-perceptible alerts when thresholds are exceeded, simplifying diagrams and establishing baselines for each well to address complexity and uniqueness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If Pressure-Volume diagrams are manually analyzed to identify pumpjack conditions, then diagnostic accuracy is improved, but time consumption and cost increase
Solution Approach 1:
The patent replaces manual mechanical analysis of Pressure-Volume diagrams with an automated computer-based system that uses algorithms to calculate features, evaluate conditions, and generate compound indicators. This substitution eliminates the need for expert human interpretation while maintaining diagnostic accuracy through systematic automated evaluation of multiple features and conditions.
2Measurement precision
If detailed analysis of Pressure-Volume diagrams is performed, then identification accuracy is improved, but complexity of the process increases
Solution Approach 1:
The patent segments the complex analysis process into distinct modular components: feature calculation (extracting specific characteristics from PV diagrams), condition evaluation (assessing individual pumpjack conditions based on features), and compound indicator generation (combining multiple conditions into an overall assessment). This segmentation reduces process complexity by making each component independent and manageable while maintaining comprehensive analysis accuracy.
Solution Approach 2:
The patent transforms the complex visual interpretation of Pressure-Volume diagrams into quantitative parameter analysis by calculating specific features (area, perimeter, shape characteristics) and evaluating them against defined conditions. This parameter transformation converts subjective visual assessment into objective numerical evaluation, reducing complexity while improving identification accuracy.
3Reliability
If comprehensive monitoring of pumpjack conditions is implemented, then reliability of oil production is improved, but resource consumption increases
Solution Approach 1:
The patent enables the monitoring system to automatically evaluate its own data and generate assessments without requiring continuous human intervention or external resources. The automated system processes PV diagrams, evaluates conditions, and generates compound indicators independently, maintaining reliable pumpjack monitoring while minimizing resource consumption by eliminating manual analysis efforts.
Data Source
AI summary
A system and method are provided. The system includes a feature calculator calculates features of a Pressure Volume diagram. The system further includes a pumpjack condition separator separates normal pumpjack conditions from abnormal pumpjack conditions using a hierarchical decision tree, the conditions being determined using the features. The system also includes a compound indicator generator generates a compound indicator when a predetermined number of at least one of features and conditions exceed respective thresholds. The system additionally includes an abnormal PV diagram indicator provides a user-perceptible indication that the PV diagram is abnormal when the compound indicator exceeds a compound indicator threshold.