Abstract
The aim of this research paper is to compare the operation efficiency of two types of coalescents: insert, made of high porous material and flat baffles. For this purpose, the method of physical experiment was applied. This research paper shows that the use of them in the settling tank allows to increase the efficiency and velocity of water-oil emulsion separation with an increase of oil concentration in the original mixture from 15 up to 25%. The experimental studies also show that the most effective coalescers are the baffles, than the inserts, made of highly porous cellular material, due to the fact that the cells are quickly clogged with heavy oil components, which leads to a more complex flow structure through them, therefore, the process of mixing oil and water compounds is intensified and prevails over the coalescence process. The velocity of oil-water emulsion separation when using the inserts, made of highly porous cellular material, and baffles in comparison with the settling tank without inserts, increases on average by 10.9 and 14.5%.
Highlights
Due to the high water encroachment of oil fields, the significant capital costs for the objects of collection and transportation system increase
It should be noted that year by year, the water encroachment of oil fields increases
It should be noted that the graphs for the visual clarity show the intermediate lines of efficiency growth of water-oil emulsions separation at the appropriate speeds, so that we can see the most effective ranges of settling tanks operation when using the various inserts that were determined in the course of experiments
Summary
Due to the high water encroachment of oil fields, the significant capital costs for the objects of collection and transportation system (products from the oil field wells) increase. To increase the efficiency of water-oil emulsions stratification at the oil production fields is a very urgent and relevant task. The importance of this task is high from an ecological point of view - in most cases, the extracted water from emulsions is pumped back into the aquifer, which is an economical way to dispose the large volumes of stratal water, but the quality of this water shall meet the criteria in order to prevent damage to the stratum when pumping back [1–4]. The most promising way to increase the efficiency of water-oil emulsions separation at the oil fields is to study the various methods of improvement of settling tanks. The purpose of this research paper is to perform experimental study of various inserts in the settling tank for the possibility of increasing the efficiency and velocity of water-oil emulsions separation
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