Managed Pressure Drilling Logic Device for Downhole Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current managed pressure drilling (MPD) systems face challenges in effectively controlling pressure during subterranean operations, particularly in monitoring and adjusting operational systems to manage downhole pressure efficiently, which can lead to drilling inefficiencies and safety concerns.
Innovation Solution
A system comprising a monitoring system that tracks criteria such as wear status, position, and operational status of components like choke valves, mud pumps, and blowout preventers, with a logic device generating capacity values to control downhole pressure by adjusting the operational systems, including the use of sensors and automated control mechanisms to manage pressure dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated control mechanisms and sensors are used to dynamically manage pressure, then drilling efficiency and safety are enhanced, but device complexity increases
Solution Approach 1:
The system implements continuous monitoring of downhole pressure, annulus pressure, and operational parameters through sensors, with real-time feedback to the control system. The logic device processes this feedback data and automatically adjusts choke valve positions and pump operations to maintain optimal pressure conditions, resolving the contradiction by enabling efficient automated pressure management through closed-loop control.
Solution Approach 2:
The control system integrates multiple functions into a unified platform: monitoring downhole conditions, predicting hazards, controlling pressure, and managing operational parameters. The logic device serves as a central intelligence that coordinates choke valves, pumps, and other operational systems, reducing the need for separate specialized systems while maintaining comprehensive control.
2Measurement precision
If multiple operational systems are monitored and adjusted to control downhole pressure, then pressure control accuracy is improved, but device complexity increases
Solution Approach 1:
The system divides pressure control into distinct functional segments: downhole pressure monitoring through BHA sensors, annulus pressure monitoring through surface sensors, choke valve control for pressure adjustment, and pump control for flow rate management. Each segment operates semi-independently with defined control objectives, allowing precise pressure control through coordinated action of specialized subsystems.
Solution Approach 2:
The logic device acts as an intermediary that integrates data from multiple sensors and coordinates control actions across multiple operational systems. It processes information from downhole pressure sensors, annulus pressure sensors, and operational parameters, then generates coordinated control signals to choke valves and pumps, enabling accurate pressure control through centralized intelligence.
3Reliability
If real-time monitoring and automated adjustments are implemented, then drilling safety is improved, but loss of time in system operation increases
Solution Approach 1:
The system performs preliminary hazard prediction by continuously analyzing operational parameters and downhole conditions to identify potential risks before they materialize. The logic device predicts kick conditions, wellbore instability, and equipment failures in advance, allowing proactive adjustments to pressure and flow rate that prevent hazards rather than merely responding to them, thus maintaining safety without excessive response delays.
Solution Approach 2:
The system replaces manual monitoring and adjustment operations with automated electronic sensing and control mechanisms. Sensors continuously measure pressure and flow parameters, while the logic device and electronic control systems automatically adjust choke valves and pump operations, eliminating the time required for manual intervention while maintaining continuous safety monitoring.
Data Source
AI summary
A system and method for conducting subterranean operations. In an embodiment, the system can include a monitoring system configured to monitor at least one criterion of a plurality of operational systems selected from the group of choke valves, mud pumps, drawworks, backpressure pumps, top drive, mud gas separator, flow line, blowout preventer, inside blowout preventer, or any combination thereof, and a logic device configured to generate a capacity value for each operational system of the plurality of the operational systems based on the at least one criterion, and further configured to change a state of one or more of plurality of the operational systems to control a downhole pressure.