Hydromechanical Piercing Perforator Wedge Pusher
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Solution Overview
Problem
Existing well perforation devices face issues with low productivity, unreliability, and design complexity due to energy drive with heat sources, low penetration rates, and the inability to perform jetting processes in critical areas after opening the column, leading to reduced efficiency and potential accidents.
Innovation Solution
A hydro-mechanical piercing perforator design that combines mechanical and hydraulic forces using a wedge pusher and a tool piston/plunger with a process chamber, allowing for radial movement and hydraulic connection, enabling double force impact for enhanced punching capability and immediate jetting of critical areas post-column opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If hydraulic mechanisms with pressure boosters are used to increase penetration, then penetration capability is improved, but device complexity and manufacturing costs increase
Solution Approach 1:
The patent combines hydraulic and mechanical force generation into a single integrated system. The wedge pusher mechanism converts hydraulic pressure into mechanical punching force through wedge geometry, eliminating the need for separate pressure booster devices while achieving high penetration capability through the combined hydro-mechanical action.
Solution Approach 2:
The patent replaces complex mechanical pressure booster systems with a hydro-mechanical conversion system using wedge pushers. Instead of using additional mechanical stages to amplify pressure, the system uses hydraulic pressure applied through wedge-shaped elements to generate the required mechanical punching force, simplifying the overall device architecture.
2Force
If energy drive with heat sources is used for fluid expansion, then punching force is generated, but productivity decreases and design complexity increases
Solution Approach 1:
The patent replaces thermal energy conversion mechanisms with direct hydraulic-mechanical force transmission. Instead of heating fluid to generate expansion forces, the system uses hydraulic pressure directly applied through wedge pushers to generate punching force, eliminating the time-consuming thermal process and improving productivity.
Solution Approach 2:
The patent uses hydraulic pressure as the primary energy transmission medium, replacing thermal expansion mechanisms. High-pressure fluid is supplied through the column to the wedge pushers, which convert the hydraulic pressure into mechanical punching force, providing a faster and more efficient energy conversion process.
3Productivity
If hydraulic mechanisms are used for pusher extension, then perforation is achieved, but tightness problems and accelerated wear of seal elements occur
Solution Approach 1:
The patent extracts the sealing function from the pusher extension mechanism by using a wedge pusher system. The wedge geometry provides mechanical locking and force transmission without requiring seals to contain high pressure during extension, thereby reducing seal wear and tightness problems while maintaining perforation efficiency.
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 significantly increases the perforation efficiency, reliability, and safety by ensuring guaranteed opening of the production string and enabling effective jetting of critical areas, reducing accidents and design complexity while maintaining simplicity and trouble-free operation.
Implementation Method 1
supplying a working fluid to the perforator through a column of pump compression tubes (tubings); creating an operating pressure of the working fluid for actuating an extension mechanism of the operating tool
Implementation Method 2
impact on the tool piston/plunger of the working fluid supplied under pressure through a hydraulic cylinder of the perforator to the process chamber of the tool piston/plunger
Implementation Method 3
extending the operating tool by impact of the pressure of working fluid transmitted through a piston-rod system, including one or several hydraulic cylinders, upon the wedge pusher, while the wedge pusher pushes the tool piston/plunger with the puncher
Implementation Method 4
The extension of the operation tool is made by impact of the pressure of working fluid transmitted through a piston-rod system... upon the wedge pusher, while the wedge pusher pushes the tool piston/plunger with the puncher... carrying out the perforation
Implementation Method 5
designing the chamber of the tool piston/plunger with a capability of hydraulic connection with the hydraulic cylinder enables supplying the operating fluid to the hydraulic channel of a nozzle of the hydro-monitor, so that immediately after opening the column up the jetting process of the critical area of formation can be done
Data Source
AI summary
Proposed devices provide for a jetting process of formation critical areas after opening up a column, increasing a perforator's punch power and reliability, significantly preventing accidents. A hydro-mechanical piercing-type perforator includes a casing containing a hydraulic cylinder with a pusher, an operating tool radially movable and capable of interaction with the pusher. The tool is designed as a puncher, placed on a piston (plunger), mounted in a camera. The tool includes at least one through hydraulic channel and a jet. The camera is hydraulically connected with the cylinder. A proposed method for operating the perforator includes supplying a working fluid to the perforator through the column, creating pressure of the working fluid for an extension mechanism actuating the tool, extending the tool by applying the pressure through a piston rod system, to the piston with the puncher, and applying pressure to the piston through the hydraulic cylinder to the chamber.