Horizontal three-phase separation device and separation method thereof

Abstract

The invention discloses a wing-plate horizontal three-phase separation device and a separation method thereof. The wing-plate horizontal three-phase separation device comprises a pre-separation tube and a separation dehydration container; the lower part of the separation dehydration container is partitioned into an oil-water separation chamber and an oil chamber by an oil overflow weir plate, andthe upper part is a gas phase space, and a large dip angle folio wing plate body is arranged in the oil-water separation chamber. After processing the three-compound combination flooding ultra-high water-containing oil-gas-water mixture by adopting the wing-plate horizontal three-phase separation device and the separation method disclosed by the invention, the water content of the outlet oil doesnot exceed 10%, and the oil content of the outlet water does not exceed 1000mg/L, the processing capacity and the efficiency are about doubled in comparison with the conventional three-phase separator; the processing effect is much better than the conventional three-phase separator, the equipment cost of the unit processing liquid volume is reduced by 30-70%, the sediment deposition is avoided, and the separation device can be efficiently used for a long time.

Description

technical field [0001] The invention relates to the technical field of oil-gas-water separation treatment in oil field surface engineering, in particular to a horizontal three-phase separation device and a separation method thereof. Background technique [0002] The liquid phase produced by oil wells in the oilfield is a gas-liquid mixture of crude oil with extremely high water content. At present, horizontal three-phase separators are mainly used to separate and process the gas-liquid mixture into wet natural gas, crude oil with low water content and oily sewage. However, the horizontal three-phase separator mainly has the following problems: [0003] (1) The processing efficiency is not high, the equipment is bulky and the cost is high [0004] The maximum specification of the horizontal three-phase separator commonly used in the oil field is Ф4×20m (diameter 4m, length 20m), and its total volume is 200m 3 , the cost is about 1.4 million yuan, and the maximum design tre...

AI Technical Summary

Problems solved by technology

Although multiple coalescing packing piles are set inside the container, when the mud and sand content in the production fluid is large, the packing piles will lose their original wettability characteristics and generate sediment deposits, resulting in a reduction in their treatment efficiency and maintenance operations. Difficult, high cost, unfavorable to safety and environmental protection

[0005] (2) Unreasonable structure and separation mechanism

[0010] 3) Although the cost and unit treatment liquid volume of this compact oblique three-phase separator are significantly better than those of conventional horizontal three-phase separators, since the treatment liquid volume has reached saturation, there is almost no further reduction in unit treatment liquid volume. volume cost potential

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