Downhole Joint Assembly Zonal Isolation
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Solution Overview
Problem
There is a need for a joint assembly that provides flow control between a base pipe and the surrounding annular region in open-hole wellbore completions, allowing for fluid communication between a primary flow path within the base pipe and secondary flow paths, which is essential for the production of formation fluids, injection of fluids, or placement of wellbore treatment fluids.
Innovation Solution
A joint assembly is provided that includes a first and second base pipe connected in series, with a load sleeve, torque sleeve, and intermediate coupling joint, featuring transport conduits that form a secondary flow path, and a packer assembly with sealing elements to control fluid flow between the primary and secondary paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a packer assembly with sealing elements is used to isolate zones, then zonal isolation capability is improved, but device complexity increases
Solution Approach 1:
The transport conduits are nested within the base pipe structure, with the secondary flow path integrated into the wall thickness of the base pipe. This nesting approach allows multiple flow paths to coexist within a single structural component, providing zonal isolation and fluid transport capabilities without requiring separate isolated components for each function.
Solution Approach 2:
The base pipe serves multiple functions simultaneously: it provides structural support, contains the primary flow path, and incorporates the secondary flow path through its wall structure. The coupling joint also performs multiple roles including mechanical connection, flow path intersection, and providing access points for both primary and secondary flows, reducing the need for additional specialized components.
2Adaptability or versatility
If transport conduits are integrated into the base pipe wall, then fluid communication between primary and secondary paths is improved, but manufacturing precision requirements increase
Solution Approach 1:
The base pipe is segmented into functional zones along its length, with transport conduits positioned at specific intervals to intersect with the primary flow path at designated locations. This segmentation allows the secondary flow path to be created through controlled openings or channels at discrete points in the base pipe wall, enabling fluid communication without requiring continuous complex geometry throughout the entire pipe structure.
3Productivity
If multiple flow paths are provided through the joint assembly, then productivity is improved, but device complexity increases
Solution Approach 1:
The coupling joint merges the primary and secondary flow paths at a single location, allowing fluids to transition between flow paths without requiring separate connection points or additional components. The coupling joint structure itself serves as the intersection point where the secondary flow path penetrates or intersects the primary flow path, combining multiple flow management functions into one integrated component.
Data Source
AI summary
A method for completing a wellbore in a subsurface formation includes providing a first base pipe and a second base pipe. Each base pipe comprises a tubular body forming a primary flow path and has transport conduits along an outer diameter for transporting fluids as a secondary flow path. The method also includes connecting the base pipes using a coupling assembly. The coupling assembly has a manifold, and a flow port adjacent the manifold that places the primary flow path in fluid communication with the secondary flow path. The method also includes running the base pipes into the wellbore, and then causing fluid to travel between the primary and secondary flow paths. A wellbore completion apparatus is also provided that allows for control of fluid between the primary and secondary flow paths.