Stacked-Helical Gas Separator for Wellbore Pump Protection
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Solution Overview
Problem
Existing gas separators in wellbores struggle to efficiently separate gas from liquid phases, leading to gas interference in pumps and incomplete pump fillage, which can result in costly system failures.
Innovation Solution
A separator apparatus featuring a first and second helical ramp within a housing, creating distinct flow paths for liquid and gas phases, allowing for centrifugal separation and efficient gas expulsion through dedicated channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple separator design is used, then device complexity is reduced, but gas separation efficiency deteriorates leading to gas interference in pumps
Solution Approach 1:
The separator is divided into multiple functional zones using helical ramps: a liquid flow path zone and a gas flow path zone. The helical ramps create distinct separated channels that guide liquid and gas phases along different trajectories, enabling effective phase separation without complex mechanical components.
Solution Approach 2:
The helical ramps introduce a third dimension (helical/rotational dimension) to the flow paths. Instead of simple linear or planar separation, the ramps create three-dimensional spiral flow patterns that enhance separation efficiency by utilizing centrifugal forces and extended path lengths within a compact vertical space.
2Reliability
If helical ramps are added to create distinct flow paths, then gas separation efficiency is improved, but device complexity increases
Solution Approach 1:
The helical ramps utilize curved/spiral geometry instead of straight lines. The curved surfaces of the ramps guide the fluid flow in spiral patterns, creating centrifugal effects that enhance phase separation. The continuous curvature of the ramps provides smooth flow transitions and efficient separation throughout the separator height.
3Productivity
If multiple flow paths are created for phase separation, then separation efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The helical ramps serve multiple functions simultaneously: they define flow path boundaries, generate centrifugal forces for separation, provide structural support, and guide both liquid and gas phases through their respective channels. This multi-functionality reduces the need for additional separate components, simplifying manufacturing.
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 solution effectively separates gas from liquids, preventing gas interference in pumps and ensuring complete pump fillage, thereby reducing the risk of system failures and improving operational efficiency.
Implementation Method 1
A stacked-helical separator includes a housing, a first helical ramp, and a second helical ramp. The first and second helical ramps define a first flow path and a second flow path, respectively, about a central tube. The first flow path and the second flow path allow for separation of a dual phase hydrocarbon stream.
Data Source
AI summary
A wellbore gas separator having a pair of helical ramps. The separator ingests a liquid-gas solution, and a pump draws the solution into a first course between the pair of ramps. As centrifugal force is imparted upon the solution prior to the pump inlet, gas is forced out of solution. The liquid portions of the solution may fall into a dead space prior to the pump inlet. Gaseous portions enter into a second course between the pair of ramps and escapes, unimpeded, up the separator before being released into an annulus of a wellbore.