Downhole Compression Indication Tool Valve Mechanism
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Solution Overview
Problem
It is challenging to accurately determine and control the compression loading applied to downhole tool strings in subterranean well operations, particularly in drilling, where friction and pressure drops complicate the measurement of compressive forces affecting drill bit performance and efficiency.
Innovation Solution
A compression indication tool with a poppet valve or sliding sleeve valve system that allows fluid communication between the internal flow passage and the annulus when a predetermined compressive load is applied, reducing pressure drop and enabling operators to detect the load, with adjustable characteristics to accommodate varying well conditions without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If compression loading is applied to downhole tool strings, then drill bit cutting performance is improved, but measurement of compressive forces becomes inaccurate due to friction and pressure drops
Solution Approach 1:
A fluid communication system acts as an intermediary between the compression indication tool and the annulus, allowing compressive force measurements to be transmitted indirectly through fluid pressure changes rather than direct mechanical measurement, thereby overcoming friction and pressure drop issues
Solution Approach 2:
The patent replaces direct mechanical force measurement with a fluid-based pressure transmission system. The compression indication tool converts mechanical compressive forces into fluid pressure signals that can be accurately measured and transmitted to the surface, substituting a problematic mechanical measurement system with a more reliable hydraulic system
2Ease of operation
If a compression indication tool is deployed to measure compressive forces, then operational control is improved, but device complexity increases
Solution Approach 1:
The compression indication tool is integrated into the existing drill string infrastructure and utilizes the existing fluid circulation system in the wellbore. The tool serves multiple functions: measuring compression, transmitting data via fluid pressure, and interfacing with existing annulus space, thereby reducing overall system complexity despite added measurement capabilities
3Loss of energy
If fluid communication is established between internal flow passage and annulus, then pressure drop is reduced, but device complexity increases due to valve mechanisms
Solution Approach 1:
The valve or sliding sleeve mechanism is designed to automatically respond to compressive forces applied to the drill string. When compression exceeds a threshold, the mechanism self-actuates to open fluid communication pathways, reducing pressure drop without requiring external control systems or complex actuation mechanisms
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 effectively indicates the application of a predetermined compressive load, improving drill bit performance and operational control by reducing pressure differentials and allowing for adjustable settings to suit changing conditions, enhancing the reliability of downhole operations.
Implementation Method 1
application of a predetermined longitudinal compressive load to the tool string, thereby opening the valve to permit fluid communication between the interior flow passage and the exterior annulus
Data Source
AI summary
A compression indication tool can include a flow passage and a valve that in a closed configuration prevents fluid communication between the flow passage and an exterior of the tool, and in an open configuration permits fluid communication between the flow passage and the exterior of the tool. The valve is opened in response to application of a predetermined longitudinal compressive load to the compression indication tool. A method can include connecting a compression indication tool in a tool string, the tool including a valve that prevents fluid communication between an interior flow passage and an exterior of the tool, deploying the tool string into the well, and applying a predetermined longitudinal compressive load to the tool string, thereby opening the valve to permit fluid communication between the interior flow passage and the exterior of the tool.