Abstract
The Institute of Combustion Problems, in conjunction with the Kazan National Research Technological University, is carrying out research in the process of dehydration, desalination, transportation and primary processing of oil. In the course of the research, the methods used to determine the wetting and washing capacity, as well as the dispersion analysis of oil dispersed systems, were developed in the Institute. In order to change the viscosity and fractional composition of high-viscosity oils for improvement of further works, there is used an electrohydraulic action technology. It is established that the object of investigation is high-viscosity and heavy oil, is capable to form a stable commercial emulsion system in the collection system. The average size of water globules in oil is 9.8 μm and aggregate resistance is 89.3%. Experimental modeling of the universal emulsion of oil dispersion system is suitable for further study of the demulsification processes of water-oil emulsion, allowed to establish the regime conditions for dispersion and preparation of a stable water-oil emulsion. The aggregative stability (As, %) was estimated by centrifuging the water-oil emulsion under given different conditions for carrying out experimental studies, followed by the determination of the amount of water released from the oil in the process of separation of the system into two coexisting phases.
Highlights
The increase in the number of experimental and field works related to the testing and implementation of modern and new promising methods for increasing of oil recovery in productive formations leads to aggravation of problems in the preparation of heavy and highly viscous oils at many production facilities
For the past few decades, there has been an increase in the share of extraction of high-viscosity oils of the coal-bearing horizon of the west regions of Kazakhstan
It is most important and relevant to develop and implement such modern and advanced technologies based on combined techniques and methods an impact to the boundary adsorption layers between oil and formation water, which allow to exclude the possible formation and accumulation of various types of substandard products in collection system and preparation of well production, and for the first, where a high-viscosity and heavy crude hydrocarbons is extracted
Summary
The increase in the number of experimental and field works related to the testing and implementation of modern and new promising methods for increasing of oil recovery in productive formations leads to aggravation of problems in the preparation of heavy and highly viscous oils at many production facilities. The discrepancy of qualitative indicators of the prepared oil due to exploitation of old technological equipment, untimely development or impossibility to introduce modern technologies led to the formation of water emulsion systems in oil of secondary origin: stable emulsion intermediate layers, granary and slop oils, oil sludge and other oil production wastes In this connection, it is most important and relevant to develop and implement such modern and advanced technologies based on combined techniques and methods (reagents, apparatus and equipment with new design features) an impact to the boundary adsorption layers between oil and formation water, which allow to exclude the possible formation and accumulation of various types of substandard products in collection system and preparation of well production, and for the first, where a high-viscosity and heavy crude hydrocarbons is extracted. This is achieved by the influence of wave and electro-hydraulic methods of various physical nature and origin to the water-oil emulsion [8]
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