METHOD FOR GAS-HYDRAULIC ACTION APPLICATION TO FORMATION Russian patent published in 2006 - IPC E21B43/263 

FIELD: oil well operation, particularly methods for stimulating production by forming cracks and cavities in well bore zone, well bore zone cleaning and formation permeability increase.

SUBSTANCE: method involves performing deep perforation through all intervals of formation to be treated; assembling uncased sectional charge by inserting rod through central channel formed in each charge section, pulling sections together and tightening sections with conical centrators, arranging splitter, which diverts gas flow generated during charge combustion, between lower conical centrator and charge sections; applying gas-dynamic action to formation; additionally treating the formation with solid, liquid or gel-like substance delivered in formation interval to be treated in container having inner cavity made as central channel of charge sections and inner cavity of gas flow splitter. The substance is chosen so that after charge activation the substance penetrates into formation cracks along with charge combustion gases under high temperature and pressure caused by charge combustion. All container connection areas are air-tight to increase container air-tightness.

EFFECT: increased efficiency.

11 cl, 2 dwg