Shock Absorber Apparatus for Drilling Tool Landing
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Solution Overview
Problem
Drilling tools are prone to damage due to shock caused by sudden deceleration during the conveyance process, particularly when positioning tools at the landing ring in drilling operations, as existing technologies fail to effectively absorb these shocks.
Innovation Solution
A shock absorber apparatus comprising a rod with a tool connection, a piston, a flange, a ring connection, and two springs, which absorbs shocks through the compression and expansion of the springs, ensuring the tool is properly aligned and secured within the drilling tubular.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tools are conveyed down hole using existing technologies, then the tools can be positioned at the landing ring, but the tools are damaged by shock caused by sudden deceleration
Solution Approach 1:
The shock absorber apparatus incorporates springs positioned between the tool and the landing ring to provide cushioning before the tool contacts the landing ring. The springs are compressed during the pumpdown operation to absorb the shock of sudden deceleration, protecting the tool from damage while ensuring proper alignment at the landing ring.
2Reliability
If a shock absorber apparatus is introduced to protect tools, then shock damage is reduced, but the device complexity increases
Solution Approach 1:
The shock absorber apparatus is designed with nested components where the spring is positioned within the pumpdown assembly structure. The fin is integrated into the rod assembly, and the entire shock absorber mechanism is contained within the existing pumpdown tool architecture, minimizing additional complexity while providing effective shock protection.
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 shock absorber apparatus effectively mitigates the impact of landing and recoil shocks, protecting the tools from damage and ensuring accurate placement within the drilling tubular, thereby enhancing the reliability of the drilling operation.
Implementation Method 1
absorbing a first shock, the first shock caused by a fin of the shock absorber apparatus being brought into contact with the landing ring, the first shock being at least partially absorbed by a first spring of the shock absorber apparatus being compressed
Implementation Method 2
absorbing a first shock
Implementation Method 3
absorbing a second shock, the second shock caused when the first spring resiliently expands following the first shock
Implementation Method 4
the second shock being at least partially absorbed by a second spring of the shock absorber apparatus being compressed
Implementation Method 5
absorbing a second shock
Data Source
AI summary
A shock absorber apparatus includes a rod; a tool connection on a first end of the rod; a piston on a second end of the rod; a flange on the rod between the tool connection and the piston; a ring connection slidably connected to the rod between the tool connection and the flange; a first spring between the ring connection and the flange to bias the ring connection axially away from the flange; a sleeve, connected to a second spring between the second spring and the piston, slidably encircling the piston and a portion of the rod, and extending past the piston to a pumpdown connection; and a fin. A method for a placing a tool in a landing ring of a drilling tubular includes using the shock absorber apparatus to absorb shocks caused by the landing operation.