Oil-gas mixed transportation separating flow divider and oil-gas separating flow-dividing method

Abstract

The invention discloses an oil-gas mixed transportation separating flow divider and an oil-gas separating flow-dividing method. The oil-gas mixed transportation separating flow divider is applied to oil field oil-gas mixed transportation engineering and connected between inlet and outlet pipelines of a tubular heating furnace; the oil-gas mixed transportation separating flow divider comprises a vertical separating tank and a liquid control loop, wherein a gas-liquid inlet is formed in the middle part of the separating tank and is communicated with a rectifying tube; a gas outlet is formed in the top of the separating tank and communicated with a gas and liquid mixing joint at the outlet of the heating furnace; a liquid outlet is formed in the bottom of the separating tank and communicated with a heating coiler pipe inlet of the heating furnace; and the liquid level control loop is arranged between a gas outlet pipeline and the separating tank. According to the oil-gas mixed transportation separating flow divider and the oil-gas separating flow-dividing method, the gas-liquid inlet and the rectifying tube are communicated with the middle part of the vertical separating tank in the horizontal direction, so that a gas-liquid laying flow pattern is quickly established, and the volume of the separating tank is greatly lowered. Liquid separated out by the separating flow divider is input to the heating furnace, and the separated-out gas is mixed with the heated liquid at the outlet of the heating furnace, so that furnace tube damages due to gas-liquid impact flow formed by enabling gas and liquid to simultaneously enter the heating furnace are avoided, and therefore, furnace tube pressure drop, investment of separating equipment and maintenance cost of the heating furnace are effectively lowered.

Description

technical field [0001] The invention belongs to the technical field of mixed transportation of oil and gas in surface engineering in oil exploitation, and in particular relates to a separation flow divider used in a mixed transportation process system and a corresponding oil and gas separation and flow separation method. Background technique [0002] At present, in the oil and gas gathering and transportation system of oil field surface engineering, more and more pressurized heating oil and gas mixed transportation technology is used. The system and process are as follows: figure 1 Shown: After the oil-gas mixture in the well area is separated by the oil-gas separator 1, the gas-liquid part first passes through the inlet pump manifold 2, is transported through the parallel mixed pump unit 3, and then enters the tubular heating furnace 5 through the furnace inlet manifold 4 After heating, it finally enters the long-distance oil-gas mixed transportation pipeline 6; and part of...

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Problems solved by technology

[0005] In order to solve the problem of gas-liquid eddy current and impingement flow caused by the direct connection of the furnace inlet manifold to the tubular heating furnace in the current oil-gas mixed transportation process system, the purpose of the present invention is to provide a kind of oil-gas mixed transportation separation splitter that avoids the formation of turbulent flow

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