ESP Well Integrity Score Using Surface-Downhole Parameters
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Solution Overview
Problem
Existing well integrity management programs for ESP oil wells struggle to effectively monitor and maintain the integrity of Christmas tree and wellhead assembly valves, leading to issues such as tubing/casing leaks, production losses, and safety risks.
Innovation Solution
A computer-implemented method to determine an integrated surface-downhole integrity score for ESP oil wells, using wellness surface parameters and downhole parameters to assess the integrity of Christmas tree and wellhead assembly valves, and providing alerts when the score exceeds a threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional well integrity management programs are used for ESP oil wells, then existing monitoring methods are applied, but the integrity of Christmas tree and wellhead assembly valves cannot be effectively monitored leading to tubing/casing leaks and safety risks
Solution Approach 1:
The patent combines surface parameters (wellhead pressure, temperature, production rates) and downhole parameters (ESP motor temperature, discharge pressure, intake pressure) into a single integrated integrity score. This merging of multiple monitoring streams into one comprehensive metric enables effective valve integrity monitoring without requiring complex separate analysis systems for each parameter type.
Solution Approach 2:
The system transforms multiple physical parameters (pressure, temperature, production rates) into a dimensionless integrity score through mathematical processing. This parameter transformation allows diverse well conditions to be evaluated on a unified scale, making the monitoring system both comprehensive and computationally manageable.
2Reliability
If comprehensive well integrity monitoring is implemented, then production losses and safety risks are reduced, but the complexity of data collection and analysis increases
Solution Approach 1:
The system continuously monitors well parameters and provides feedback through an alert mechanism when the integrated integrity score exceeds predetermined thresholds. This feedback loop enables real-time safety monitoring without requiring complex manual analysis, as the system automatically compares current conditions against safety criteria and notifies operators of potential issues.
Solution Approach 2:
The integrated integrity score serves multiple functions simultaneously: it assesses valve integrity, predicts potential failures, guides maintenance scheduling, and triggers safety alerts. This multi-functionality reduces the need for separate specialized systems for each monitoring objective, simplifying the overall data collection and analysis infrastructure.
3Measurement precision
If integrated surface-downhole integrity scoring is implemented, then valve integrity is accurately assessed and maintenance is optimized, but the computational processing requirements increase
Solution Approach 1:
The system transforms complex multi-parameter well data into a simplified dimensionless integrity score through mathematical processing. This parameter transformation maintains measurement precision by preserving the relationships between variables while reducing the dimensionality of the output, making computational processing more efficient without sacrificing accuracy.
Solution Approach 2:
The system creates a virtual representation of well integrity status through the computational integrity score, which mirrors the physical state of valves and equipment. This digital copy enables accurate assessment of integrity conditions without requiring direct physical inspection or complex real-time processing of all raw sensor data.
Data Source
AI summary
Systems and methods include a computer-implemented method for determining an integrated surface-downhole integrity score for Christmas tree and wellhead assembly valves of an electrical submersible pump (ESP) oil well. Wellness surface parameters are determined for an ESP oil well operating at least one ESP. Wellness downhole parameters are determined for the oil well, including parameters indicating well integrity and pump efficiency. An integrated surface-downhole integrity score is determined using the wellness surface parameters and the wellness downhole parameters. The integrated surface-downhole integrity score indicates an integrated integrity of Christmas tree and wellhead assembly valves for the ESP oil well. An alert is provided in response to determining that the integrated surface-downhole integrity score exceeds a threshold. The alert is provided for presentation to an operator in a user interface.