Integrated Shifting Tool for Remote Valve Actuation
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Solution Overview
Problem
Current multi-zone well completion systems require multiple trips to open and close production sleeves, increasing time and cost due to the need for additional runs of work strings for selective zone production.
Innovation Solution
A production string with an integrated shifting tool and remotely controlled hydraulic production valve that allows for the opening and closing of production sleeves within the completion system, eliminating the need for extra work string runs by enabling selective zone production through a single string.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple trips are made to open and close production sleeves using separate opening/closing tools, then selective zone production is achieved, but time and cost increase due to additional work string runs
Solution Approach 1:
The patent combines the functions of opening and closing production sleeves into a single integrated tool that can perform both operations during one trip into the wellbore. This merging of previously separate functions (opening tool and closing tool as separate entities) eliminates the need for multiple trips, directly resolving the technical contradiction by maintaining selective zone production capability while reducing completion time
Solution Approach 2:
The integrated tool is designed with multi-functionality, capable of both opening and closing production sleeves through different operational modes or configurations. This universal tool replaces the need for specialized separate tools, enabling the system to achieve selective zone production while minimizing the number of trips required, thus addressing both ease of operation and time loss
2Ease of operation
If multiple trips are made to open and close production sleeves, then selective zone production is achieved, but expense increases due to additional work string runs
Solution Approach 1:
By merging the opening and closing functions into a single integrated tool, the patent eliminates redundant work string runs, directly reducing completion costs while maintaining the capability for selective zone production. This resolves the contradiction between operational capability and manufacturing cost
3Adaptability or versatility
If a service string is removed after completion to receive production string, then production tubing can be run into the wellbore, but additional time is required for tool removal and string replacement
Solution Approach 1:
The integrated opening/closing tool is designed to perform all necessary sleeve operations before the service string is removed, ensuring that production sleeves are properly configured for the subsequent production string installation. This preliminary action prevents the need for additional adjustments or trips after string replacement, reducing overall time loss
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
This solution reduces the number of trips required, minimizing completion and recovery costs by allowing for efficient and remote control of production sleeve operations within the well, thereby enhancing operational efficiency.
Implementation Method 1
a remotely controlled hydraulic production valve which controls fluid flow between the passageway and the production sleeve
Data Source
AI summary
A production string employable in a multi-zone completion system, the production string includes a passageway enabling passage of production fluids therethrough; a shifting tool including a shifting profile engageable with a production sleeve of the completion system to open a closed production sleeve, the shifting tool sharing the passageway of the production string; and, a remotely controlled hydraulic production valve which controls fluid flow between the passageway and the production sleeve. Also included is a production method useable in a borehole.