FIELD: oil and gas industry.
SUBSTANCE: group of inventions is related to the methods which can be used in treatment of underground strata and, more specifically to the improved methods for distribution and deviation of fluids in underground strata. The method includes introduction of the first lost circulation material to an underground stratum through which the wellbore passes in order to reduce or prevent fluid flow to the first part of the underground stratum. Reduction or prevention is made by the first lost circulation material to the first part of the underground stratum. A part of the first fluid is introduced to the second part of the underground stratum having a higher fluid resistance than the first part of the underground stratum. The second lost circulation material is introduced to the underground stratum through which the wellbore passes in order to reduce or prevent fluid flow to the second part of the underground stratum. A part of the second fluid is introduced to the first part of the underground stratum with the first flow rate. The first lost circulation material is removed from the underground stratum. By means of temperature monitoring in the respective part of the underground stratum the time is determined when the first lost circulation material was removed, at least partially, from the underground stratum. The second fluid is introduced into the first part of the underground stratum.
EFFECT: increasing isolation efficiency.
12 cl, 8 dwg
