Abstract
In a previous paper we presented the results of our investigations on the application of externally imposed temperature fields for the improvement of the non-Newtonian properties of raw oil in the well and also on the possible use of electric and magnetic fields in the water flooding process of the oil layer. In this article, some additional results are presented with regards to the application of external pressure fields to the same purpose, with the goal of increasing the well output and improve the efficiency of gaslift wells and oil pipelines. The possibility of regulating the gas-liquid system saturation pressure is discussed as well, to expand the opportunity of varying the well operating regime.
Highlights
The wide range of technological systems applied in oil-and-gas production and recovered non-Newtonian oils are characterized by non-equilibrium properties, which differ in their complicated rheophysical parameters and existence of ―memory‖ [1,2,3,4,5,6]
The results have shown that the improved rheological properties of oil were retained for a long period after pressure treatment
Considering a priori that producing wells and pipeline flows are essentially different applications, there is still some commonality to be found between these two processes, this being that the production and transportation of non-Newtonian oils is taken at a high differential pressure, but the same processes for Newtonian oils is taken at a considerably lower differential pressure
Summary
The wide range of technological systems applied in oil-and-gas production and recovered non-Newtonian oils are characterized by non-equilibrium properties, which differ in their complicated rheophysical parameters and existence of ―memory‖ [1,2,3,4,5,6]. The application of externally imposed physical fields such as magnetic, electric, pressure and temperature fields during the investigations testified to the possibility regulation of the systems’. Properties and revealed the common mechanism of all physical field effects, allowing us to extend the possibility of their application in different oil recovery processes. ―memory‖ of these systems which predetermined the necessity of applying repeated or cyclic physical fields on the investigated systems. It is clear, that at the same time, new power and resource-saving technology possibilities are raised, which can be combined under the general name rheo-technology. As the main mechanism for the regulation of rheological properties of the non-Newtonian oils, the authors offer the application of externally imposed magnetic, electric, pressure and temperature fields
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