HYDRAULIC FRACTURING FLUID BASED ON HIGHLY MINERALIZED WATER, METHOD FOR ITS PREPARATION AND METHOD FOR PROCESSING THE FORMATION WITH ITS USE Russian patent published in 2021 - IPC C09K8/62 E21B43/26 

FIELD: oil and gas production.

SUBSTANCE: invention relates to the field of oil and gas production. Hydraulic fracturing fluid based on highly mineralized water contains components in the following ratio, wt. %: gel-forming agent 0.2-0.5, crosslinking agent 0.2-0.4, crosslinking stabilizer 0.04-0.3, destructor 0.02-0.14, demulsifier 0.01-0.2, biocide 0.001-0.005, highly mineralized water the rest, while the ratio of the crosslinking agent to the gel-forming agent ranges from 0.6:1 to 1.0:1, to the crosslinking stabilizer from 1.3:1 to 5.6:1, to the destructor from 3.5:1 to 13.0:1. The method for preparing hydraulic fracturing fluid consists in the fact that, when mixing, a biocide is added to highly mineralized water, then a gel-forming agent is added, a gel-forming agent is hydrated and a demulsifier and a destructor are introduced into the resulting linear gel, then a crosslinking agent is added, a crosslinking stabilizer is introduced simultaneously or after adding the crosslinking agent. The method for processing the formation includes hydraulic fracturing using hydraulic fracturing fluid based on highly mineralized water.

EFFECT: ensuring the possibility of regulating the stability time of the liquid during the necessary period for the operation at high temperatures and its subsequent complete disintegration, simplifying and improving the efficiency and eco-friendliness of the processing method.

36 cl, 9 dwg, 2 tbl