Liner Wiper Plug Rupture Disk Fluid Path
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Solution Overview
Problem
The existing cementing processes in the resource recovery industry face mechanical complexities in creating a fluid path through landing collars, which are essential for flushing residual cement from float shoes in wellbores, leading to inefficiencies.
Innovation Solution
A plug with a rupture disk is used, which is engaged with a landing member and ruptured by hydraulic pressure to create a fluid path through the landing collar, reducing mechanical complexity and enabling effective flushing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If moving parts are used in landing collars to create a fluid path, then the fluid path creation capability is improved, but the mechanical complexity increases
Solution Approach 1:
The plug body is divided into separate functional components: a main body with bore, a rupture disk for fluid path creation, and engagement features for the landing member. This segmentation allows each component to perform its specific function independently, reducing overall mechanical complexity while maintaining fluid path creation capability
Solution Approach 2:
The rupture disk is designed as a disposable, single-use component that is intentionally destroyed (ruptured) to create the fluid path. This eliminates the need for complex reusable mechanical mechanisms, as the fluid path creation is achieved through a simple, low-cost sacrificial element
2Device complexity
If a rupture disk is used to create fluid path, then the mechanical complexity is reduced, but the reliability may be compromised due to pressure threshold requirements
Solution Approach 1:
The rupture disk is designed with specific physical parameters (thickness, material properties, diameter) that determine its rupture pressure threshold. By carefully selecting and controlling these parameters, the system ensures reliable operation at the required pressure levels while maintaining simple mechanical design
Solution Approach 2:
The complex mechanical system for creating fluid paths is replaced with a hydraulic system that uses pressure to rupture the disk. This substitution eliminates intricate mechanical linkages and moving parts, reducing complexity while improving reliability through the direct action of hydraulic pressure
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
This method simplifies the creation of a fluid path through landing collars, allowing for efficient flushing of residual cement from float shoes, thereby improving the cementing process in wellbores.
Implementation Method 1
a hydraulic pressure is applied in the tubular to rupture the rupture disk to form an inlet to the plug
Data Source
AI summary
A plug for delivering to a bottom end of a tubular in a wellbore and method of use. The plug includes a body having a first end and a second end opposite the first end, the first end engageable to a landing member in an interior of the tubular uphole of the bottom end. A bore extends through the body from the first end to the second end. A rupture disk that breaks above a rupture threshold pressure is on an outer diameter of the body. The plug is run into the tubular and engaged to the landing member. A hydraulic pressure is applied in the tubular to rupture the rupture disk to form an inlet to the plug. Fluid is delivered to the bottom end of the tubular via the inlet of the plug.