Layered and balanced medium entering system and method of parallel multiphase separation equipment

Abstract

The invention discloses layered and balanced medium entering system and method of parallel multiphase separation equipment, which is applied to treatment of oilfield produced liquid. The system is characterized in that an arrival manifold (1) is branched into four parallel branch pipelines through a primary manifold (2) and two secondary manifolds (5) and connected to four parallel multi-phase separation equipment; the four parallel branch pipelines are equal in length and thickness at the same level of section; the arrival manifold (1), the primary manifold (2) and the secondary manifolds (5) are connected in a manner of equal pipe bottom elevations; the arrival manifold (1) leads produced liquid into the four parallel triple-phase separation equipment through the four parallel branch pipelines so as to built an equivalent and layered flow pattern of oil, gas and water. A sampling test result shows that a gas and liquid layered flow pattern is formed inside each manifold and each branch pipeline of the system; the flow of oil, gas and water entering each equipment is balanced, the oil-water separation interface is stable, and the overall oil-water separation ability of the equipment is improved by 15%-20% in comparison with a liquid feeding process in a conventional sequence.

Description

Technical field: [0001] The invention relates to oil, gas and water separation technology for oil field surface engineering production fluid, in particular to a medium layered balanced entry system of parallel multiphase separation equipment and a layered balanced entry method realized by the system. Background technique: [0002] At present, the oil-gas-water three-phase separation equipment used for oil well product treatment in oilfields at home and abroad adopts the method of mixing multiphase media, and the gas-liquid separation and oil-water separation processes are mainly carried out in the three-phase separator. When this kind of equipment is set up in parallel and runs at the same time, the medium generally enters in the direction of gravity against the direction (see Figure 6-Figure 7 ). This medium access method has the following problems: [0003] (1) The medium inflow and composition of each equipment are not equal [0004] When a plurality of separation equi...

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Problems solved by technology

[0009] In order to solve the problem of partial flow and low processing capacity of each equipment caused by the sequential liquid feeding method in the anti-gravity direction of the current multi-phase separation equipment running in parallel, the present invention provides a medium layering method for parallel multi-phase separation equipment Balanced entry system and method

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