Vortex Applications: How It Works!

Surface

In the case of a typical gas pipeline with a two-phase flow (gas and liquid), the device creates two distinct flows within the overall laminar flow

First, an annular or "spiral" flow is established and travels along the outer wall of the pipe. This flow looks much like a stretched "Slinky" or tornado. This spiral flow carries most or all of the liquid phase of the pipe flow.In the center of the spiral, a strong laminar flow is created where the gas phase of the flow is conveyed. The fluids remain entrained in the laminar flow, reducing drop out and this flow can be maintained over long distances and dramatic elevation and directional changes. This boundary layer provides a cushioning effect that reduces pressure drop over the length of the line, as compared to turbulent flow.

Downhole

The same principal applies in the application of our down-hole tools. As a stream of gases and liquids enters our DX-series tool, a bluff body or helix forces the flow stream to spin rapidly. The high angular acceleration slings the heavier liquid toward the pipe wall. Consequently, the no-flow boundary at the edge of the central gas flow is moving. The result: a lower differential velocity between the bulk flow and the outer edge of the flow which yields a lower shear force and a lower pressure drop due to friction. A second benefit is provided by eliminating the slip between liquid droplets in the flow and the gas stream. Removing this slip force reduces the amount of work the gas mist must perform - reducing the total pressure drop.