Features and Benefits
The CLSR changes the droplet size distribution of the oil phase. The total amount of oil remains the same, but the small droplets are coalesced to large droplets. A typical (2nd stage) produced water droplet size distribution (marked Inlet) is shown in the graph below.
The CLSR collects these droplets according to Stokes' law. The small size of channels ensures that even the smallest droplets down to 1 micron are collected. These droplets coalesce in the channels and on the channel wall, form a film, break up as larger droplets and are delivered to the separator downstream. The distribution of these droplets is marked Outlet in the graph below. This distribution is the new inlet distribution of the separator.
If we look at a separator, for instance a plate type gravity separator with a cutoff point of 20 to 30 micron, it is clear that the amount of oil that is not separated with the original inlet distribution is much larger than with the distribution after the CLSR .
Advantages
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Simple to operate |
Straightforward centrifugal pump technology |
|
Efficient |
Collects droplets down to 1 micron |
| Small footprint & weight | Compact pump design Boosts performance of existing separators and allows for steep increase of hydraulic capacity |
| Scalable | Standard unit deals with up to 40 m3/hr (170 gpm).Higher capacity units available on demand. Ability to perform low cost, non-disruptive testing |
| Low cost | Limited capex and opex requirements |
| Wide oparational window | Performs under varying conditions with respect to volume flow, pressure, temperature, specific gravity and oil concentration |
| Robust | Not sensitive to high motion oparation (FPSOs) Minimal maintenance requirement |
Internal CLSR
