Hydraulic Fracturing Control for Multi-Well Pressure Equalization
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Solution Overview
Problem
Current hydraulic fracturing systems face inefficiencies in managing the hydraulic fracturing process across multiple oil and gas wells, particularly in terms of fluid pressure equalization, valve operation, and swapping between wells, which affects the overall efficiency and speed of the fracturing process.
Innovation Solution
A hydraulic fracturing system that includes a blender for mixing fracturing fluid, a suction manifold, swap stations, and a zipper manifold, along with a grease system and controller to manage valve operations and fluid pressure across multiple wells, enabling efficient fracturing and swapping between wells by controlling the frac legs and lubricators through a coordinated method involving equalization, perforation, and pressure testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual management of hydraulic fracturing process across multiple wells is used, then operational flexibility is maintained, but efficiency and speed of the fracturing process deteriorates
Solution Approach 1:
The system divides the hydraulic fracturing operation into independent controllable units (frac legs, swap stations, valves for each well) that can be managed separately yet coordinated through the controller, enabling efficient multi-well operations without overwhelming complexity
Solution Approach 2:
Manual operational management is replaced with an automated controller that coordinates valve operations, fluid pressure equalization, and well swapping processes, significantly improving efficiency and speed while reducing human error and labor requirements
2Productivity
If rapid swapping between wells is implemented, then productivity is improved, but precision in fluid pressure equalization and valve operation deteriorates
Solution Approach 1:
The controller monitors fluid pressure, valve positions, and system status in real-time, providing feedback that enables precise coordination during rapid well swaps, ensuring pressure equalization and proper valve sequencing even at high speeds
Solution Approach 2:
The system performs preliminary pressure equalization and valve positioning before executing the actual well swap, ensuring that all parameters are optimized in advance, which allows rapid swapping without sacrificing precision during the transition
3Productivity
If coordinated control of frac legs and lubricators is implemented, then operational efficiency is improved, but system complexity deteriorates
Solution Approach 1:
The controller serves multiple functions including coordinating frac legs, managing lubricator operations, monitoring pressure, and executing well swaps through a single integrated system, improving operational efficiency while avoiding the need for separate complex control systems for each function
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system allows for rapid and efficient hydraulic fracturing across multiple wells by ensuring precise fluid pressure management and valve operation, enabling quick swapping between wells and optimizing the fracturing process, thereby enhancing production efficiency and reducing operational time.
Implementation Method 1
opening the equalization valve to equalize a fluid pressure between the lubricator and the well
Implementation Method 2
hydraulically fracturing the isolated/perforated stage of each well
Data Source
AI summary
A hydraulic fracturing plan executable by a hydraulic fracturing system to hydraulically fracture a plurality of oil and gas wells.