SEPARATION PLANT Russian patent published in 2007 - IPC E21B43/38 

FIELD: oil and gas extractive industry, in particular, technology for dividing emulsion of two non-mixing liquids with various density, possible use for separating oil and water in separation chamber, mounted in currently shut down well, and for cleaning water for further forcing thereof into bed.

SUBSTANCE: separation plant contains separation chamber open from below mounted in well with pipeline for intake of water-oil emulsion connected to upper part of chamber, pipelines for draining oil and water. In accordance to invention along height of chamber at distance equal to 8-10 chamber diameters, a row of vortexes is positioned made in form of blades. Blades of next row of vortex are positioned with displacement relatively to blades of vortex of next row. Oil draining pipeline is connected to well mouth. Water draining pipeline is mounted inside the chamber coaxially with it length-wise, appropriate for well length. Lower end of water draining pipeline is made in form of cone with slit recesses made on the surface.

EFFECT: increased degree of cleaning of water drained from well, preparation of water in separation chamber for feeding into bed, decreased costs of transit of ballast water, extracted with oil.

1 dwg