Downhole Completion System Modular Screen Assembly
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Solution Overview
Problem
Existing well completion systems are complex to assemble, as they require specialized tools for connecting multiple screens, making it difficult to mount the well tubular structure efficiently at the rig.
Innovation Solution
A completion system comprising multiple screen assemblies with a base pipe section, tubular screen elements, and connectors that allow for easy assembly using conventional rig tools, featuring a first tubular member with an inner diameter equal to or larger than the tubular screen element, and tubular member connectors with internal threads to securely fasten the assemblies, forming an annular flow channel and allowing fluid flow around the assembly connection parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If specialized tools and custom couplings are used to connect multiple screens, then the reliability of screen connection is improved, but the device complexity and ease of operation deteriorate
Solution Approach 1:
The patent applies universality by enabling standard coupling devices to perform the function of connecting screen assemblies, just as they connect base pipe sections. The coupling device is designed with universal applicability to handle both base pipe sections and screen assemblies using the same threading interface, eliminating the need for specialized connection tools or custom couplings while maintaining connection reliability
Solution Approach 2:
The patent segments the well completion system into modular components (base pipe sections and screen assemblies) that can be connected using standardized interfaces. Each screen assembly is designed as an independent module with external threading that matches standard coupling devices, allowing for easy segmentation and recombination during assembly operations
2Manufacturing precision
If specialized tools are used for connecting screens, then the manufacturing precision of connections is improved, but the ease of manufacture and ease of operation deteriorate
Solution Approach 1:
The coupling device is designed with universal threading that matches both base pipe sections and screen assemblies, allowing standard tools to achieve precise connections for both component types. The external threading on screen assemblies is designed to match standard coupling interfaces, ensuring precise alignment and connection without requiring specialized manufacturing or assembly tools
3Reliability
If multiple screens are connected in series, then the reliability of fluid production is improved (redundancy), but the device complexity and loss of time increase
Solution Approach 1:
The patent segments the completion system into modular screen assemblies that can be pre-fabricated and tested independently, then quickly connected in series using standard coupling devices. This modular segmentation allows for redundant screen configurations while minimizing assembly time through standardized, repeatable connection procedures
Solution Approach 2:
Screen assemblies are designed to be pre-fabricated with external threading and connection features already in place, allowing them to be ready for immediate installation. This preliminary preparation of components with standardized interfaces reduces on-site assembly time while maintaining the ability to connect multiple screens in series for enhanced production reliability
Data Source
AI summary
The present invention relates to a completion system for connecting several screens into a well tubular structure mounted from base pipe sections. The completion system comprises a first screen assembly and a second screen assembly, each screen assembly comprising a base pipe section mounted as part of the well tubular structure having a longitudinal extension, the base pipe section having an outer face, and a tubular screen element surrounding and being connected to the outer face of the base pipe section, the tubular screen element having an outer diameter, and an assembly connection part for connecting an end of the first screen assembly with an end of the second screen assembly, wherein the completion system further comprises a first tubular member having an inner diameter which is equal to or larger than the outer diameter of the tubular screen element, the first tubular member being arranged opposite the assembly connection part so that fluid flowing in through the tubular screen element of one of the screen assemblies flows on the outside of the assembly connection part. Furthermore, the present invention relates to a completion method and a production method for producing hydrocarbon-containing fluid from a reservoir into a well tubular structure.