Packer Bypass Assembly Segmented Flowpaths
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Solution Overview
Problem
Conventional packer bypasses in gas-lift processes are expensive, reduce lift gas flow rates, and can cause damage to production tubing due to high fluid velocities, leading to issues like fluid cuts and erosion.
Innovation Solution
A bypass assembly for a packer that includes adapters with specific bore and opening configurations to define separate flowpaths for lift gas and production fluids, featuring a tubular extending through the packer and check valves to manage fluid communication effectively, preventing direct fluid communication between the annulus and production tubing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional packer bypass is used to allow lift gas flow through the packer, then gas-lift operation is enabled, but lift gas flow rates are reduced and production tubing may be damaged due to high fluid velocities
Solution Approach 1:
The invention divides the bypass flowpath into multiple segments: a first flowpath through the tubular for lift gas, and a second flowpath through the annulus between the tubular and packer for production fluids. This segmentation allows separate controlled flow paths that prevent high-velocity mixing and protect production tubing while maintaining adequate lift gas flow rates
Solution Approach 2:
The tubular acts as an intermediary element extending through the packer, providing a protected conduit for lift gas flow. The adapters with specifically positioned openings serve as intermediaries to direct flows separately, preventing direct high-velocity interaction between lift gas and production fluids that would cause erosion and fluid cuts
2Reliability
If a conventional packer bypass is used to enable gas-lift operation, then fluid communication is established, but production tubing may be damaged due to high fluid velocities causing erosion and fluid cuts
Solution Approach 1:
The flowpath is segmented into distinct channels: lift gas flows through the tubular while production fluids flow through the annulus. This physical separation prevents high-velocity turbulent mixing that causes erosion and fluid cuts in production tubing, while still establishing the necessary fluid communication for gas-lift operation
Solution Approach 2:
The tubular and adapters serve as intermediary structures that control and separate fluid flows. The specifically positioned openings in the adapters direct lift gas through the tubular away from production tubing, preventing direct high-velocity contact that would cause damage
3Reliability
If a conventional packer bypass is used to allow lift gas flow, then gas-lift operation is enabled, but the bypass assembly becomes expensive
Solution Approach 1:
The tubular serves multiple functions: it provides structural support, acts as a flow conduit for lift gas, and serves as a central element for mounting adapters. The adapters provide both flow control and structural connection functions. This multi-functionality reduces the need for additional specialized components, lowering overall assembly cost while maintaining bypass functionality
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
The bypass assembly enhances lift gas flow rates while minimizing damage to the production tubing by providing controlled and separate flowpaths for lift gas and production fluids, thereby improving the efficiency and reliability of gas-lift operations.
Implementation Method 1
A check valve may be received at least partially into and coupled to the first central bore
Data Source
AI summary
A bypass assembly for a packer includes a first adapter including a first central bore, a first radial opening communicating with the first central bore, and first axial openings prevented from fluid communication the first central bore. The bypass assembly includes a second adapter including a second central bore, a second radial opening communicating with the second central bore, and second axial openings prevented from fluid communication with the second central bore. The bypass assembly includes a tubular coupled to the first central bore and the second central bore, the tubular being configured to extend through the packer. A first flowpath is defined from the first radial opening through the tubular and the second radial opening, and a second flowpath is defined through the first axial openings, between the tubular and the packer, and through the second axial openings.