DOWN HOLE SEPARATOR AND FAST FLOW OIL SHIMMER

摘要

A separation unit for separating oil from oily water has a first oil to water ratio and the separation unit comprises a body which defines an inner chamber and which has a first end-wall and an opposite second end-wall and first and second side-walls that extend between the first end-wall and the second end-wall. The inner chamber is at least partly delimited by the first end-wall and the second end-wall, the first side-wall and the second side-wall. The separation unit further comprises a third wall which constitutes a separation wall extending from the first end-wall towards the second end-wall and divides the inner chamber into a first and a second sub- chamber. An inlet is defined at the first side-wall and the first end-wall and a first outlet is defined at the second side-wall and the first end-wall. A passage is defined at the third wall and the second end-wall and a fluid path from the inlet which passes through the first sub-chamber and the passage and the second sub-chamber to the first outlet. A second outlet is defined at the second end-wall, the second outlet defining an opening having an outlet area. The fluid has a restricted flow at the first outlet compared to the flow at the inlet so that a fraction of the fluid is separated from the fluid path through the second outlet. The fraction has a second oil to water ratio which is higher than the first oil to water ratio.