Wellbore Assembly with Accumulator System
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Solution Overview
Problem
The existing methods for deploying and actuating wellbore tools, such as packers and bridge plugs, require the use of costly and complex wellbore pumps when using spoolable lines like wireline or slickline, increasing the expense and complexity of well completion and remediation procedures.
Innovation Solution
A wellbore assembly that includes a conveyance member, such as a continuous spooled rod, wireline, or slickline, coupled with an accumulator system that supplies fluid pressure to actuate a setting tool, allowing for the hydraulic actuation of wellbore tools without the need for expensive pumps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wellbore pumps are used to provide fluid pressure when utilizing spoolable line, then the wellbore tools can be actuated, but the cost and complexity of the procedure increases
Solution Approach 1:
The patent extracts the fluid pressure generation function from the wellbore pump system and relocates it to surface equipment. The spoolable line serves only as a conveyance mechanism for the setting tool, while the accumulator system and fluid pressure source are positioned at the surface, eliminating the need for downhole pumps and reducing overall system complexity.
Solution Approach 2:
The patent introduces an intermediary system consisting of the spoolable line and setting tool that transmits mechanical force from the surface to actuate the wellbore tools. This intermediary mechanism replaces the direct fluid pressure transmission approach that would require complex downhole pumping equipment.
2Reliability
If wellbore pumps are used to provide fluid pressure, then the wellbore tools can be actuated, but the expense of the procedure increases
Solution Approach 1:
The expensive wellbore pump equipment is extracted from the deployment system and replaced with simpler, less costly surface-based fluid pressure generation equipment. The spoolable line deployment method inherently reduces equipment costs compared to pump-based systems.
Solution Approach 2:
The patent employs disposable or single-use spoolable line and setting tool assemblies that are deployed, used, and retrieved or abandoned. This approach is more economical than installing and maintaining expensive wellbore pump systems that would be required for reusable actuation methods.
3Ease of manufacture
If spoolable line is used to deploy wellbore tools, then the cost is reduced, but the ability to provide fluid pressure for tool actuation is lost
Solution Approach 1:
The patent replaces the fluid pressure-based actuation system with a mechanically-driven system. The spoolable line is used to lower the setting tool to the target depth, where mechanical actuation mechanisms (such as mechanical setting tools or wireline-powered actuators) are employed to set the wellbore tools, eliminating the need for fluid pressure generation downhole.
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 enables a simple and reliable system for actuating wellbore tools using spoolable lines, reducing costs and complexity by utilizing an accumulator system to provide the necessary fluid pressure for tool operation, thereby simplifying the wellbore tool deployment process.
Implementation Method 1
an accumulator system configured to hydraulically actuate a setting tool
Implementation Method 2
The accumulator system may be configured to supply a fluid pressure to actuate the setting tool
Data Source
AI summary
A method and apparatus for a wellbore assembly. The wellbore assembly may comprise a conveyance member including at least one of a continuous spooled rod, a wireline, and a slickline; an accumulator system connected to the conveyance member; and a setting tool connected to the accumulator system. The accumulator system may be configured to supply a fluid pressure to actuate the setting tool. A method of operating a wellbore tool may comprise lowering a wellbore assembly into a wellbore using a conveyance member including at least one of a continuous spooled rod, a wireline, and a slickline, wherein the wellbore assembly includes an accumulator system and a setting tool. The method may comprise actuating the accumulator system to provide a fluid pressure to the setting tool. The method may comprise actuating the setting tool using the fluid pressure.