BORED WELL PROCESSING COMPOSITIONS CONTAINING FOAM FILLER AND METHODS OF USING SAID COMPOSITIONS Russian patent published in 2010 - IPC C09K8/70 

FIELD: chemistry.

SUBSTANCE: bored well processing composition which contains an aqueous medium, foam filler, a gaseous component, a surfactant and an agent for providing viscosity, in which the foam filler provides at least approximately an average of 10% increase in value of measured viscosity for at least 10 minutes, measured over an approximately 180 minute estimation interval. In particular, the invention pertains to aqueous compositions for processing bored wells, which are in form of foam containing an agent for providing viscosity, foam filler, a gaseous component and a surfactant, as well as methods of preparing such fluids and use thereof. The agent for providing viscosity can be a hydrating polymer, viscoelastic surfactant or heteropolysaccharide. The foam filler can be a product such as polyoxyalkylene amines, ethylene polyamines, tertiary polyamines, bicarbonate, carbonate, phosphate or sesquicarbonate.

EFFECT: high stability and viscosity.

15 cl, 20 ex, 5 tbl, 5 dwg