APHRON-CONTAINING PROCESS FLUID Russian patent published in 2022 - IPC C09K8/473 

FIELD: mining industry.

SUBSTANCE: invention relates to drilling and reconstruction of oil and gas wells. Aphron-containing water-based process fluid containing bactericide, soda ash, inhibitor of complex action PKD-515, potassium chloride, starch, biopolymer, activator-foaming agent with the following component ratio, %: bactericide Atren Bio B: 0.3, soda ash: 0.5, inhibitor of complex action PKD 515: 0.35, potassium chloride: 0.5, starch: 2, xanthan biopolymer: 0.4, activator-foaming agent: 0.5, water being the rest.

EFFECT: minimization of losses of process fluid in the event of complications, minimization of the load on the layers being opened or opened, shielding and protection from phenomena occurring inside the well and further in the bottomhole zone, which initiate the formation of a zone of reduced permeability around the wellbore, the use of process fluid in a traditional open-type circulation system without additional inclusion of any atypical equipment.

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