During the oil production process,
a constant transverse field is use to increase oil productivity. This
field also affects the movement of the mixture of gas - water - oil - solid
particles in the production wellbore. In this case, complex
processes of interaction of each fragment with others occur, one of which is
the precipitation of solid particles from the mixture. Rock
fragments that make up the reservoirs of the oil reservoir represent the main
part of the solid particles: sand, clay, mica, etc.
Modeling the process of flow
movement in a production wellbore and studying, the influence of the sand
fraction on this process is very difficult. The complexity
increases due to the creation of a stable emulsion, through which it is
difficult to observe the process of emulsion separation and sedimentation of
solid particles.
Therefore, decided to follow world
practice, in which the behavior of a complex system considered as a set of
simple ones. Examine them separately and establish the areas
of magnetic fields that lead to a positive result in each case. By
comparing the intervals of successful magnetic field strengths of each
fraction, the most acceptable one for the system selected.
Numerous studies show that the
magnetic field has a significant effect on clay particles; however, plugs in
the wellbore contain a large percentage of sand fractions. Therefore,
it decided to study the influence of a magnetic field on the process of sand
deposition, since clay particles relatively well carried away by an upward flow
of liquid.
In our studies, transverse constant
magnetic fields were use. It is known, that an alternating magnetic field
with an oscillation frequency of 50 Hz does not produce a noticeable effect,
while a constant magnetic field increases oil recovery from a porous medium.
Therefore, in all subsequent studies a constant magnetic field was use.