METHOD OF REAGENT FEEDING INTO WELL AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2010 - IPC E21B37/06 E21B43/00 

FIELD: oil-and-gas production.

SUBSTANCE: method includes definition of existing problem or its set in the form of asphalt-resin-paraffin deposits, corrosion, formation of emulsions, residues of salts, definition of density and watering of fluid, placement of device with reagent in the borehole, dissolving of reagent by extracted fluids. Device is implemented in the form of connected to each other and flow column of similar sections, each of which corresponds hollow cartridge, hydraulically connected by means of openings with well. Before placement of device with reagent it is defined temperature of extracted fluids at depth of location of device in well and chemical composition of extracted fluids, it is implemented feeding of reagents of any aggregative state. Cylindrical container is implemented with located in its butts chambers for mixing, separated from cavity, filled by reagent, filters, regulating dosing of reagent according to its capacity. Openings implementing hydraulical connection to the well are located in chamber of mixing.

EFFECT: increased effectiveness of operation and range of application of device.

2 cl, 1 dwg