Erosion Resistant Screen Assembly With Dual Passageways
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Solution Overview
Problem
The production of particulate materials like sand during hydrocarbon extraction from unconsolidated subterranean formations causes abrasive wear and erosion of well components, leading to costly workovers and clogging issues due to high-velocity particle flow through existing screen assemblies.
Innovation Solution
An erosion-resistant sand control screen assembly with a filter medium disposed between a solid shroud and a base pipe, ensuring equal restriction through inner and outer passageways to evenly distribute particulate materials, reducing their velocity and preventing damage by allowing fluid to flow through the filter medium at any point along its length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sand control screen assembly is used to prevent particulate material production, then the reliability of well components is improved, but the device complexity increases due to the need for filter media and passageway structures
Solution Approach 1:
The filter medium is disposed between an inner tubular structure (base pipe) and an outer tubular structure (shroud), creating a nested configuration where the filter medium is embedded within the annular space between the two pipes. This nesting approach protects the filter medium while integrating it into the screen assembly structure.
Solution Approach 2:
The screen assembly is divided into distinct functional segments: an inner passageway for fluid flow, an outer passageway for particulate material flow, and a filter medium layer that separates these passageways. This segmentation allows each component to perform its specific function independently.
2Productivity
If existing screen assemblies are used, then particulate materials are filtered, but high-velocity particle flow causes erosion and damage to the screen assembly
Solution Approach 1:
The filter medium acts as an intermediary layer between the inner and outer passageways. It distributes the flow of particulate materials evenly across its surface area, preventing concentrated high-velocity flow that would cause erosion. The filter medium mediates the interaction between flowing particles and the screen structure.
Solution Approach 2:
The filter medium provides localized flow distribution across different sections of the screen assembly. By ensuring even distribution of particulate materials across the entire surface area of the filter medium, it prevents localized erosion hotspots and ensures uniform wear protection throughout the assembly.
3Ease of operation
If the filter medium is positioned near the inflow control device, then flow control is achieved, but particulate materials flow through at high velocity causing erosion
Solution Approach 1:
The design introduces an additional spatial dimension by creating an outer passageway that extends the flow path laterally away from the inflow control device. This dimensional expansion allows particulate materials to flow through the filter medium at a location removed from the high-velocity zone near the inflow control device, reducing erosion while maintaining flow control functionality.
Data Source
AI summary
A sand control screen assembly can be operably positioned within a wellbore. The sand control screen assembly can include a base pipe and an unperforated shroud. The assembly can also include a filter medium positioned between the unperforated shroud and the base pipe. The base pipe and the filter medium can define an inner passageway for fluid flow along the base pipe. The filter medium and the unperforated shroud can define an outer passageway for fluid flow between the filter medium and the unperforated shroud.