Replaceable Diverter Test Cell Insert for Downhole Flow Simulation
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Solution Overview
Problem
Existing diverter test methods fail to accurately simulate subterranean fluid flow conditions due to limitations in modeling fluid flow area changes and inability to handle high pressures and temperatures, which restricts the evaluation of diverter materials in simulated downhole environments.
Innovation Solution
A diverter test cell system with a replaceable insert that includes an enclosure and a channel with varying dimensions, allowing for a constant cross-sectional area and simulating fluid flow through a fracture in a subterranean formation, coupled with a pumping system to maintain a consistent flow rate and replicate downhole conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If slot models are used to narrow the flow area, then the flow conditions are simplified, but the fluid flow area changes are not accurately accounted for creating unrealistic flow conditions
Solution Approach 1:
The test cell is divided into distinct components: an enclosure structure and a replaceable insert with the channel. This segmentation allows the channel geometry to be precisely manufactured and independently optimized while keeping the overall test cell design modular and manageable.
Solution Approach 2:
The channel cross-sectional area is maintained substantially constant along its length, contrasting with traditional slot models that narrow. This parameter change (maintaining constant area rather than narrowing) creates realistic flow conditions that account for actual fluid flow area changes in subterranean formations.
2Temperature
If large scale flow models are used, then the physical dimensions are sufficient, but the models cannot handle pressures or temperatures above atmospheric conditions
Solution Approach 1:
The test cell is designed to operate under controlled pressure and temperature conditions that simulate downhole environments. The enclosure and insert configuration allows for pressurization and heating beyond atmospheric conditions, enabling realistic simulation of subterranean formation conditions while maintaining structural integrity.
Solution Approach 2:
The channel geometry and test cell structure are designed to replicate actual subterranean fracture conditions on a smaller, controlled scale. This scaled copying approach allows for high-pressure and temperature simulation that would be impractical in full-scale field conditions, while maintaining geometric similarity to actual formations.
3Measurement precision
If a constant cross-sectional area channel is used, then realistic fluid flow conditions are achieved, but the channel dimensions must vary along the length
Solution Approach 1:
The channel cross-sectional area is maintained substantially constant along its length, while the channel dimensions (width and height) are allowed to vary. This approach achieves realistic fluid flow conditions with accurate flow area representation, while accommodating the geometric constraints of the test cell enclosure.
Solution Approach 2:
Instead of varying the cross-sectional area (two-dimensional change), the channel geometry varies in one dimension (length) while maintaining constant cross-sectional area. This dimensional approach allows for realistic flow conditions without the complexity of varying cross-sections, simplifying the geometry while achieving the desired flow characteristics.
4Adaptability or versatility
If the cover is permanently coupled to the body, then the enclosure is more structurally sound, but the insert cannot be replaced for different testing configurations
Solution Approach 1:
The enclosure is segmented into a body and a cover that can be selectively coupled and decoupled. This segmentation provides structural soundness when coupled while enabling insert replacement by allowing the cover to be removed, facilitating different testing configurations without compromising the overall enclosure design.
Solution Approach 2:
The cover coupling mechanism transitions from a static permanent connection to a dynamic reversible connection. This allows the enclosure to be structurally sound during testing while enabling easy access for insert replacement, adapting the structural integrity based on the operational phase (testing vs. maintenance).
Data Source
AI summary
A diverter test cell can include an enclosure having a body and a cover removably coupled to the body, where the body forms a cavity that is enclosed by the cover, where the body includes an inlet port and an outlet port in communication with the cavity. The diverter test cell can also include an insert removably disposed within the cavity, where the insert has a channel that forms continuously from a first end to a second end of the insert, where the channel has first width at the first end and a second width at the second end, where the first width is less than the second width, where the first end of the insert is adjacent to the inlet port of the enclosure, and where the second end of the insert is adjacent to the outlet port of the enclosure.