New type high-efficient whirl slug flow catcher

Abstract

The invention discloses a new type high-efficient whirl slug flow catcher, which comprises an entrance flow averaging device, a first class tangent inclined type whirl separating section, a secondary class gaseous phase gravity separation section and a tubular liquid phase buffer storage separating section. The bottom of the secondary class gaseous phase gravity separation section is communicatedwith the tubular liquid phase buffer storage separating section through a gravity separation liquid decreasing communication port and a multifunctional gas-liquid balancing communication port. The invention has the advantages that the entrance flow is averaged, the tangent inlet direction is changed, the internal components are less, the tubular liquid phase buffer storage separating section is used as a separating element and is provided with the secondary gas-phase gravity separation section and the multifunctional gas-liquid balancing communication port, the flashing steam phase at far endof the liquid storage section can smoothly pass through the secondary separating section due to the high joined positions of a gas phase balancing tube and the secondary gas-phase gravity separation section on the tubular liquid phase buffer storage separating section, the gas content of the liquid phase is reduced which is in favor of the liquid phase process of a downstream device.

Description

technical field [0001] The invention relates to an oil gas treatment device, in particular to a slug flow catcher. Background technique [0002] With the development of oceans, deserts, offshore oil and gas fields and more and more large-scale condensate gas fields, the multi-phase mixed transportation process has been continuously developed, and the wet gas transportation can meet the requirements for safe operation of pipelines. [0003] Due to the development of large-scale condensate gas fields, the diameter of mixed transportation pipes is getting larger and larger, and the slug flow rate in the process of multiphase mixed transportation is increasing. Plug flow capture condition. [0004] The Chinese invention patent application with the application number 200810232329.5 discloses a plug flow collection system, which includes a tank body, a swirl device, a gas rectification device, a vertical mist collection and separation device, and a buffer partition. The top of th...

AI Technical Summary

Problems solved by technology

When the pipeline is pigged, its working conditions are complicated, the liquid has many impurities, the internal components are easily damaged, and the maintenance workload is large

Due to structural limitations, the size of the cyclone separation on the liquid storage section cannot be made too large, and the liquid storage section of the entire device cannot be used as a gravity component. When the flow rate is large, the liquid stops flowing in the separation section. The liquid is brought into the downstream device from the gas phase outlet before it can be separated in time, resulting in too much liquid in the downstream device, especially during pipeline pigging operations, which may easily cause the risk of overflow; at the same time, due to the high position of the tangential inlet, the piping installation is difficult Large, uneven flow distribution in multi-pipe liquid storage sections, affecting the separation of slug flow trapping effect

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