Auto-bleeding Setting Tool with Oil Shut-off Valve
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Solution Overview
Problem
Traditional setting tools for well operations require manual and cumbersome procedures to release high pressure after activation, posing safety risks to workers due to the potential for uncontrolled release of toxic gases and projectiles.
Innovation Solution
An auto-bleeding setting tool with a floating piston and internal plug system that automatically vents pressurized gas outside the well, using a cover-insert member and isolation valve assembly to safely release pressure without human intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a manual release valve procedure is used to relieve pressure from the setting tool, then the pressure can be released, but the procedure is cumbersome, time-consuming and poses safety risks to workers
Solution Approach 1:
The setting tool automatically releases its own pressure through an integrated release valve that opens when the tool is retrieved to the surface. The valve is designed to automatically open and close without human intervention, allowing the pressurized gas to be safely vented through a directed pathway away from workers.
Solution Approach 2:
A dedicated release valve mechanism serves as an intermediary between the pressurized chamber and the external environment. The valve includes a valve body, valve seat, and spring mechanism that mediates the pressure release process, directing the flow away from workers while maintaining safety.
2Reliability
If the release valve is removed from the setting tool at high pressure, then the pressure can be released, but the release valve may behave like a projectile and injure the person removing it
Solution Approach 1:
The release valve is designed to automatically open before the tool is fully retrieved to the surface, and the pressure is gradually reduced through a controlled pathway. The valve mechanism is pre-configured with a spring-loaded system that opens the valve in advance, allowing pressure to be safely vented before any manual handling occurs.
Solution Approach 2:
A dedicated release valve mechanism serves as an intermediary between the pressurized chamber and the external environment. The valve includes a valve body, valve seat, and spring mechanism that mediates the pressure release process, directing the flow away from workers while maintaining safety.
3Reliability
If the setting tool is designed with automatic pressure release, then worker safety is improved, but the device complexity increases
Solution Approach 1:
The release valve mechanism is integrated into the existing setting tool housing and chamber structure. The valve body is formed as part of the tool housing, and the release mechanism shares components with the overall tool design, reducing the addition of separate complex subsystems while achieving automatic pressure release.
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 auto-bleeding setting tool effectively and safely releases pressurized gas into the well, reducing the risk of injury to workers and simplifying the process by automating the pressure relief, ensuring quick and safe operation.
Implementation Method 1
The firing head 102 ignites a primary igniter 103 that in turn ignites a power charge 106. When the power charge 106 burns, the large pressure generated inside the pressure chamber 104 is guided into the cylinder 110.
Implementation Method 2
the large pressure generated inside the pressure chamber 104 is guided into the cylinder 110. A floating piston 112, which is located inside the cylinder 110, is pushed by the pressure formed in the pressure chamber 104
Implementation Method 3
The floating piston 210 has at least one internal plug 214 having an internal passage 212 extending from an upstream end 214A into the piston 210 towards a downstream end 214B of the piston 210
Implementation Method 4
A cover-insert member 220 blocks a port 218 formed in the downstream end 214B of the internal plug 214
Data Source
AI summary
A setting tool for setting an auxiliary tool in a well, the setting tool including a housing having a floating piston, the floating piston separating the housing into a pressure chamber, located upstream the floating piston, and a hydraulic chamber located downstream the floating piston; an internal plug having an upstream end attached to the floating piston and having a downstream end extending into the hydraulic chamber; and a cover-insert member covering the downstream end of the internal plug. The internal plug has an internal passage that fluidly communicates (1) with an internal passage through the floating piston, at one end, and (2) with a port at the other end, and the port is covered by the cover-insert member.