Wellbore Valve Checks for Deadhead and Overpressure Prevention
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Solution Overview
Problem
In high-pressure wellbore drilling operations, the large number of valves involved increases the risk of overpressurization and 'deadhead' situations, leading to equipment damage and drilling delays, as operators struggle to correctly configure and monitor numerous valves during operations like hydraulic fracturing and cementing.
Innovation Solution
A system that includes processors to receive and analyze valve configurations, preventing proposed manipulations that would lead to overpressurization by blocking valve operations when a pump is active and identifying potential overpressured states, and providing operators with warnings and override options to manage valve configurations safely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of valves is increased to handle complex wellbore operations, then the system's adaptability and functionality are improved, but the risk of overpressurization and deadhead situations increases
Solution Approach 1:
The system continuously monitors the state of each valve and pump through sensors and communicates this information to the control system. The controller receives feedback about valve positions and pump status, automatically adjusts valve configurations to prevent overpressurization, and provides real-time alerts to operators about potential deadhead conditions. This closed-loop feedback mechanism resolves the contradiction by enabling the system to handle complex operations with multiple valves while maintaining safety through automated monitoring and control.
Solution Approach 2:
The electronic control system acts as an intermediary between the operator and the numerous valves. Instead of directly managing each valve individually, the controller receives high-level operational commands and automatically determines the appropriate valve configurations. This intermediary layer reduces the complexity of manual valve management and prevents human error in configuring dozens of valves, thereby maintaining reliability while preserving system adaptability.
2Ease of operation
If operators manually configure each valve individually, then the system's ease of operation is maintained, but the likelihood of improper valve setting increases
Solution Approach 1:
The control system automatically performs the valve configuration task that would otherwise require manual operator intervention. When an operator initiates a pumping operation, the controller autonomously analyzes the required valve settings, communicates with each valve actuator, and configures all valves according to the optimal configuration for the desired operation. This self-service capability eliminates human error in valve setting while maintaining operational simplicity for the user.
Solution Approach 2:
Before initiating a pumping operation, the control system automatically determines and pre-configures the appropriate valve settings based on the selected operation type. This preliminary action ensures that all valves are correctly positioned before pumping begins, preventing deadhead situations and overpressurization. The system performs this configuration advance, so operators do not need to manually adjust each valve, thereby maintaining ease of operation while ensuring configuration accuracy.
3Productivity
If electronic control systems are used to manage multiple valves, then the productivity and operational speed are improved, but the complexity of the system increases
Solution Approach 1:
The control system is designed to perform multiple functions: it monitors valve positions, controls valve actuators, tracks pump status, determines optimal valve configurations, provides operator alerts, and logs operational data. By consolidating these diverse functions into a single multi-functional control platform, the system achieves high productivity through automated management of numerous valves without proportionally increasing overall system complexity. The universal controller handles all control tasks that would otherwise require separate devices.
4Ease of operation
If operators are responsible for monitoring all valve states, then the ease of operation is maintained, but the time required for detection and response increases
Solution Approach 1:
Sensors on each valve and pump provide continuous feedback to the control system about their operational state. The controller automatically processes this feedback information, compares actual valve positions with expected configurations, and immediately detects discrepancies or potential deadhead conditions. This automated feedback mechanism dramatically reduces the difficulty of monitoring numerous valves compared to manual observation, while operators retain control through the ability to review system status and initiate operations.
Data Source
AI summary
An example method of performing a valve check on a plurality of valves utilized in a wellbore servicing operation includes identifying a set of valves to be checked from the plurality of valves. The method also includes simultaneously actuating each valve in the set to transition from a first position to a second position. The method further includes for each valve in the set, recording a first response time based on the transition from the first position to the second position and determining if the first response time for the valve exceeds a first predetermined upper threshold. The method also includes presenting a display of each valve in the set and an indication whether the first response time exceeds the first predetermined upper threshold.