초록 ▼

An atmospheric vertical oilfield tank designed to pre-condition oilfield fluid streams. Flow enters on tangent a vertical cyclone tube located within the tank and rotates inside the tube. Solids fall downward out of the tube to the bottom of the tank; gases exit upward out of the tube and vent from

An atmospheric vertical oilfield tank designed to pre-condition oilfield fluid streams. Flow enters on tangent a vertical cyclone tube located within the tank and rotates inside the tube. Solids fall downward out of the tube to the bottom of the tank; gases exit upward out of the tube and vent from the tank. Liquids exit the cyclone tube tangential to the ID of the tank, additional solids separation due to impingement, and the liquid flows into the body of the tank where flow slows to allow for settling of solids. Solids are periodically removed from the bottom of the tank. The liquid flows over the top of multiple vertical flow dividing tubes located at the same elevation within the tank, creating separate and equal effluent discharge streams. The tank is taller than destination vessels to provide the height differential necessary to create flow into subsequent tanks without using pumps.

대표청구항 ▼

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 rec

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. 2. An atmospheric vertical oilfield tank according to claim 1 further comprising: said vertical tank being taller than subsequent downstream vessels to which the effluent discharge piping connects such that flow from the vertical tank occurs without pumps. 3. 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,at least one liquid fluid receiving inlet nozzle provided in said vertical tank, said at least one inlet nozzle in liquid communication via inlet piping with at least one cyclone inlet provided in a vertical cyclone tube located within the tank, said at least one cyclone inlet discharging horizontally and tangentially into said vertical cyclone tube,an open bottom end of the cyclone tube communicating with 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,an open top of the cyclone tube protruding into and communicating with a gas/air phase located at the top of the tank above a liquids phase, a pressure-vacuum vent valve provided in the top of the tank,a cyclone liquids outlet tube provided in the vertical cyclone tube just above the at least one cyclone inlet and said cyclone liquids outlet tube communicating between the interior of the cyclone tube and the liquids phase within the body of the tank, said cyclone liquids outlet tube discharging horizontally and on tangent into the body of the tank to cause the liquids to impinge on the inside wall of the body of the tank and to impart a swirling motion to the liquid as it leaves the vertical cyclone tube,a plurality of vertical flow dividing tubes provided within the body of the tank, each of the vertical flow dividing tubes communicating with associated effluent piping designed to carry the individual divided flow streams to subsequent separate downstream vessels, each of the vertical flow dividing tubes being open at their upper ends, and the upper ends of all of the vertical flow dividing tube being at approximately the same elevation 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. 4. An atmospheric vertical oilfield tank according to claim 3 further comprising: said vertical tank being taller than subsequent downstream vessels to which the effluent discharge piping connects such that flow from the vertical tank occurs without pumps. 5. 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,at least one liquid fluid receiving inlet nozzle provided in said vertical tank, said at least one inlet nozzle in liquid communication via inlet piping with at least one cyclone inlet provided in a vertical cyclone tube, said vertical cyclone tube located within the tank such that a fluid stream entering via the at least one inlet nozzle travels through the inlet piping and is discharge horizontally and tangentially through the at least one cyclone inlet into the vertical cyclone to create a rotating flow of the fluid stream within the cyclone tube that impinges on the wall of the cyclone tube,an open bottom end of the cyclone tube communicating with 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 such that solid particles contained within the incoming fluid stream separate by centrifugal force and fall downward within the cyclone tube and then exit the open bottom of the cyclone tube before settling to a bottom of the tank,an open top of the cyclone tube protruding into and communicating with a gas/air phase located at the top of the tank above a liquids phase, a pressure-vacuum vent valve provided in the top of the tank such that entrained gases and air separate from the fluid stream within the vertical cyclone tube and flow upward to exit the open top of the cyclone tube and enter the gas/air phase of the tank before exiting the tank through the pressure-vacuum vent valve,a horizontal cyclone liquids outlet tube provided in the vertical cyclone tube just above the at least one cyclone inlet, said cyclone liquids outlet tube communicating between the interior of the cyclone tube and the liquids phase within the body of the tank such that the fluid stream discharges from the cyclone tube via the cyclone liquids outlet tube horizontally and on tangent and impinges on an inside surface of the tank to effect further enhance solids separation from the liquid and to impart a rotating flow to the fluid stream as it enters the liquids phase within the body of the tank, anda plurality of vertical flow dividing tubes provided within the body of the tank, each of the vertical flow dividing tubes being open at an upper end and communicating with associated effluent piping designed to carry the individual divided flow streams to subsequent separate downstream vessels,the upper ends of all of the vertical flow dividing tube being at approximately the same elevation so that the fluid stream flows from the body of the tank into the open tops of the plurality of vertical flow dividing tubes and creates separate effluent streams that are approximately equal in volume that flow via the effluent piping to subsequent separate downstream vessels. 6. An atmospheric vertical oilfield tank according to claim 5 further comprising: said vertical tank being taller than subsequent downstream vessels to which the effluent discharge piping connects such that flow from the vertical tank occurs without pumps.