Setting Tool Assembly Piston Actuation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional setting tools for downhole operations are outdated, prone to damaging advanced downhole tools due to rapid pressurization and shock, require hazardous power charges, and have maintenance and precision issues, especially in horizontal wells with complex conditions.
Innovation Solution
A setting tool assembly that utilizes surrounding wellbore pressure to actuate downhole tools without a power charge or liquid dampener, featuring a piston mechanism and pressure equalization chambers to ensure controlled and reliable tool setting and disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional power charges are used for rapid tool setting, then setting speed is improved, but shock and damage to downhole tools increases
Solution Approach 1:
The patent applies beforehand cushioning by incorporating a dampener assembly that absorbs and dissipates shock energy before it can damage the downhole tool. The dampener includes a piston, spring, and orifice arrangement that provides progressive resistance to shock loads, cushioning the tool setting process and preventing damage from rapid power charge expansion.
Solution Approach 2:
The dampener assembly serves as an intermediary between the power charge and the downhole tool. It mediates the force transmission by controlling the rate at which expansion forces are applied to the tool, using the piston-orifice-spring mechanism to transform the abrupt power charge expansion into a controlled, progressive setting action.
2Object-affected harmful factors
If liquid dampeners are used to reduce shock, then shock protection is improved, but device complexity and maintenance requirements increase
Solution Approach 1:
The patent employs pneumatic and hydraulic principles through the dampener assembly, using fluid pressure and gas compression to achieve shock absorption. The piston moves within a chamber containing fluid or gas, utilizing pressure differential and compressibility to dampen shocks without requiring complex mechanical linkages or multiple moving parts.
Solution Approach 2:
The dampener changes physical parameters during operation - specifically, it transforms the pressure and velocity parameters of the expanding power charge into controlled, progressive forces. The spring constant and orifice size are carefully selected to provide the desired shock protection while maintaining simplicity.
3Adaptability or versatility
If conventional setting tools are used in horizontal wells, then versatility is improved, but measurement precision and reliability decrease
Solution Approach 1:
The setting tool incorporates dynamic elements that allow it to adapt to different well orientations. The dampener piston and spring assembly can respond to forces in any direction, and the tool includes features like adjustable setting mechanisms and orientation sensors that enable precise operation whether the well is vertical, horizontal, or at any angle in between.
Solution Approach 2:
The patent incorporates feedback mechanisms including orientation sensors and pressure sensors that provide real-time information about tool position and downhole conditions. This feedback allows the control system to adjust setting parameters dynamically, ensuring precise tool placement and activation regardless of well orientation.
4Device complexity
If outdated setting tool technology is used, then device complexity is reduced, but reliability and safety decrease
Solution Approach 1:
The patent replaces purely mechanical systems with a hybrid system incorporating electronic sensors, microprocessors, and control algorithms. The setting tool uses electronic ignition systems, sensor feedback, and programmable logic to control the power charge timing and magnitude, significantly improving reliability and consistency compared to mechanical-only systems while maintaining manageable complexity through integrated circuitry.
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 solution provides a safer, more reliable, and maintainable setting tool that effectively sets downhole tools in various conditions without rapid pressurization, eliminating the need for hazardous materials and precise knowledge of downhole conditions, while being reusable and adaptable to horizontal wells.
Implementation Method 1
Activating the setting tool assembly may include allowing surrounding wellbore pressure to move the piston from the first position to the second position
Implementation Method 2
A conventional method for actuating (setting) a downhole tool is to generate a pressurized gas using a pyrotechnic (or power) charge of a setting tool that then converts into motion of a selected downhole tool or tool component
Data Source
AI summary
A setting tool assembly configured to couple with a part of a workstring, the assembly having an inner housing coupled with one or more other components. A trigger device is coupled with a movable piston. During run-in, the piston is in a first position. Upon activation, the trigger device undergoes an altering event whereby the piston moves to a second position as a result of a pressure acting thereon.