Dual Sleeve Valve Sequential Port Control
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Solution Overview
Problem
Existing toe valve systems in well applications lack efficient control over fluid flow between a wellbore and a surrounding reservoir, particularly in multistage stimulation and sand control operations.
Innovation Solution
A dual sleeve valve system is introduced, which includes a toe valve assembly and a production assembly, allowing for controlled opening and closing of fracturing and production ports through pressure mechanisms and drop balls, enabling sequential fluid flow management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single toe valve system is used to control fluid flow, then the device complexity is reduced, but the ability to perform sequential operations (fracturing then production) is limited
Solution Approach 1:
The valve system is divided into two separate sleeves: a fracturing sleeve with fracturing ports and a production sleeve with production ports. Each sleeve can be independently actuated to open or close its respective ports, enabling sequential fracturing and production operations without requiring retrieval or complex reconfiguration of the system
Solution Approach 2:
Both sleeves are designed to be dynamically controllable through independent actuation mechanisms. The fracturing sleeve can be opened first for fracturing operations, then closed while the production sleeve is opened for production, allowing the system to adapt its flow paths dynamically based on operational stage
2Ease of operation
If a dual sleeve valve system is implemented for sequential port control, then fluid flow control capability is improved, but the device complexity increases
Solution Approach 1:
Hydraulic actuators serve as intermediary mechanisms between the control system and the sleeves. Fluid pressure applied to the actuators automatically opens or closes each sleeve in response to pressure changes in the wellbore, providing intuitive and easy-to-operate flow control without requiring complex mechanical linkages or manual intervention
Solution Approach 2:
The system uses hydraulic pressure from the wellbore fluid to automatically actuate the sleeves. When fluid pressure exceeds a predetermined threshold, the hydraulic actuators respond by opening or closing the appropriate sleeve, enabling automatic flow control that simplifies operation while managing the complexity through fluid-mechanical coupling
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 dual sleeve valve system provides improved control over fluid flow, enabling efficient fracturing operations and subsequent production by allowing selective port activation and deactivation, thus enhancing the overall effectiveness of well operations.
Implementation Method 1
allowing for controlled opening and closing of fracturing and production ports through pressure mechanisms
Implementation Method 2
allowing for controlled opening and closing of fracturing and production ports through pressure mechanisms and drop balls
Data Source
AI summary
A system and method for producing hydrocarbons from a well with a dual sleeve valve assembly. The dual sleeve valve assembly has a toe valve assembly and a production assembly. The toe valve assembly has a valve sleeve positioned in a valve housing comprising at least one fracturing port. The valve sleeve is shiftable to allow fluid through the least one fracturing port. The production assembly comprises a production sleeve positioned within a production outer housing comprising at least one screen port and at least one production port. A sand screen assembly disposed around the production outer housing. The production sleeve shiftable by a ball to allow fluid through the at least one screen port and the at least one production port.