NANO-WAVE METHOD OF BOTTOM HOLE ZONE TREATMENT, EQUIPMENT AND PRESSURE MULTIPLIER Russian patent published in 2009 - IPC E21B37/06 E21B28/00 

FIELD: oil-and-gas production.

SUBSTANCE: invention related to oil-and-gas production, particularly to methods and equipment of bottom hole zone - BHZ treatment using target chemical reagents hydrodynamic action in infra-frequent and supersonic vibration spectrum. Pressure multiplier with nano-generator consist of connected with tubing string - TS case, with suction chamber, central canal for hydraulic connection to depression impulse generator -DIG and lateral and axial canals for connection with pressure accumulation chamber, formed by case and piston, supported by block of plate strings, installed on a stop block which fixed together with piston via adapter to cantilever part of case over DIG interconnection pipe, on the case and piston circular shaped nozzles installed opposite to each other, in its counterbore holes rigid fixed with possibility of pair contact at pistons initial position installed cylindrical elements made of piezoceramics. Equipment for nanowave bottomhole zone treatment, which includes TS, a jet pump installed on it, bellow which serially installed parker, mentioned above pressure multiplier, with a possibility of uplifting along the well, and depression impulse generator, which radial canals located on the same level as bottom perforation holes of the well perforation interval. Method of BHZ treatment using equipment mentioned above includes pumping in through hole clearance of a active reagent media into BHZ and further into reservoir, process ageing until deposits of asphalts, resins, and paraffins - DARP dissolved, other calmative deposits and withdrawal of generated passive media, hydroimpuls interval BHZ treatment with active reagent liquid media and final removal mentioned above passive media, at that DARP dissolver pumped in and acts as a active media, other calmative deposits with replacement killing fluid simultaneously performing depressive-repressive treatment, interval BHZ treatment performed by killing fluid with adding pf of water-repellent SAS for production well and hydrophilic SAS for injection well.

EFFECT: increase of oil and gas wells production, well injection capacity increase for injection wells, bottom hole zone recovery and initial permeability increase.

3 cl, 1 ex, 6 dwg