Patent ID: 9199251
Filing Date: 2015-12-01
Classification: B01D,B04C

Abstract:
1. An atmospheric vertical oilfield tank for preconditioning an oilfield fluid stream entering the inlet to production or processing facilities by desanding, degassing and hydraulically splitting the flow of the liquid into evenly divided exiting fluid streams comprising: a vertical liquid fluid receiving tank, internal piping communicating between at least one liquid fluid receiving inlet of the tank to at least one cyclone inlet attached to a vertical cyclone tube located within a body of the tank, each said at least one cyclone inlet entering the vertical cyclone tube in such a manner as to cause the entering liquid to impinge on the inside surface of the vertical cyclone tube and to impart rotation to the liquid within the vertical cyclone tube, said vertical cyclone tube having a top end that opens into a gas/air phase within the body of the tank, said vertical cyclone tube having an opposite bottom end that opens into a liquids phase within the body of the tank as an exit for separated particles from the vertical cyclone tube into a bottom of the body of the tank, a vent provided in a top of the tank that communicates between the gas/air phase within the body of the tank and atmosphere, a cyclone liquids outlet tube communicating between the vertical cyclone tube and the liquids phase within the body of the tank, said cyclone liquids outlet tube entering the body of the tank in such a manner as to cause the entering liquid to impinge on the inside surface of the body of the tank and to impart rotation to the liquid within the body of the tank, a plurality of vertical flow dividing tubes located within the body of the tank communicating with separate effluent discharge piping designed to carry fluid out of the tank to separate vessels downstream of the tank, and the upper ends of each vertical flow dividing tube being open and at approximately the same elevation within the tank so that liquid flowing from the body of the tank into the open upper ends of the vertical flow dividing tubes is divided into separate liquid flow streams of approximately equal volumes.