APPLICATION OF CEMENTS BASED ON METAL OXIDES Russian patent published in 2021 - IPC C09K8/42 E21B33/138 C04B9/04 C09K8/504 

FIELD: mining.

SUBSTANCE: group of inventions relates to a wellbore system treatment. The treatment method involves creating a mixing model for a wellbore system containing a wellhole penetrating at least part of the underground formation, a first composition for the treatment of the nearwellbore zone, at least one separation fluid, and a second composition for the treatment of the nearwellbore zone. The first composition contains the first base liquid and magnesium oxide. The second composition for the treatment of the nearwellbore zone contains a second base liquid and a soluble salt. A mixing model is used to determine one or more properties of at least one of the first composition for the treatment of the nearwellbore zone, the second composition for the treatment of the nearwellbore zone, and at least one separation liquid. Processing operations for the wellbore system are carried out based at least in part on one or more properties. The processing operation includes introducing the first composition for treating the nearwellbore zone into the wellhole, introducing at least one specified separating liquid into the wellbore to separate the first composition for treating the nearwellbore zone from the second composition for treating the nearwellbore zone.

EFFECT: technical result is to increase the efficiency of treatment of a welborel system.

14 cl, 11 dwg